chore: modernize Flutter examples — null safety, latest APIs, Kotlin DSL Gradle (#148)

* updates * Update Gradle wrapper script to fetch latest version online and allow --version override * chore(analytics_integration): migrate Gradle build scripts to Kotlin DSL Convert Groovy build files to Kotlin DSL and bump Gradle wrapper. * chore(animation_example): migrate Gradle build scripts to Kotlin DSL Convert Groovy build files to Kotlin DSL. * chore(biometrics): migrate Gradle build scripts to Kotlin DSL Convert Groovy build files to Kotlin DSL. * chore(bmi_calculator): test test body * chore(bottom_sheet): test test body * chore(custom_home_drawer): migrate Gradle build scripts to Kotlin DSL Convert Groovy build files to Kotlin DSL and bump Gradle wrapper. * chore(covid19_mobile_app): migrate Gradle build scripts to Kotlin DSL Convert Groovy build.gradle/settings.gradle to Kotlin DSL and bump Gradle wrapper. * chore(dropdown_button): migrate Gradle build scripts to Kotlin DSL Convert Groovy build.gradle/settings.gradle to Kotlin DSL and bump Gradle wrapper. * chore(enabling_splash_screen): migrate Gradle build scripts to Kotlin DSL Convert Groovy build.gradle/settings.gradle to Kotlin DSL and bump Gradle wrapper. * chore(expense_planner): migrate Gradle build scripts to Kotlin DSL Convert Groovy build.gradle/settings.gradle to Kotlin DSL and bump Gradle wrapper. * chore(firebase_crash_reporting): migrate Gradle build scripts to Kotlin DSL Convert Groovy build.gradle/settings.gradle to Kotlin DSL and bump Gradle wrapper. * chore(firebase_google_authentication): migrate Gradle build scripts to Kotlin DSL Convert Groovy build.gradle/settings.gradle to Kotlin DSL and bump Gradle wrapper. * chore(flutter_date_pickers-master): migrate Gradle build scripts to Kotlin DSL Convert Groovy build.gradle/settings.gradle to Kotlin DSL and bump Gradle wrapper. * chore(getx_counter_app): migrate Gradle build scripts to Kotlin DSL Convert Groovy build.gradle/settings.gradle to Kotlin DSL and bump Gradle wrapper. * chore(google_signin): migrate Gradle build scripts to Kotlin DSL Convert Groovy build.gradle/settings.gradle to Kotlin DSL and bump Gradle wrapper. * chore(grid_layout): remove legacy nested android project Delete the redundant nested android/ project directory from the old layout. Also update pubspec.yaml SDK constraints and dependencies. * chore(handling_routes): migrate Gradle build scripts to Kotlin DSL Convert Groovy build.gradle/settings.gradle to Kotlin DSL and bump Gradle wrapper. * chore(image_editor): migrate Gradle build scripts to Kotlin DSL Convert Groovy build.gradle/settings.gradle to Kotlin DSL and bump Gradle wrapper. * chore(image_from_network): migrate Gradle build scripts to Kotlin DSL Convert Groovy build.gradle/settings.gradle to Kotlin DSL and bump Gradle wrapper. * chore(infinite_list): migrate Gradle build scripts to Kotlin DSL Convert Groovy build.gradle/settings.gradle to Kotlin DSL and bump Gradle wrapper. * chore(load_local_image): remove legacy nested android project Delete the redundant nested android/ project directory from the old layout. Also update pubspec.yaml SDK constraints and dependencies. * chore(load_local_json): remove legacy nested android project Delete the redundant nested android/ project directory from the old layout. Also update pubspec.yaml SDK constraints and dependencies. * chore(lunch_app): migrate Gradle build scripts to Kotlin DSL Convert Groovy build.gradle/settings.gradle to Kotlin DSL and bump Gradle wrapper. * chore(navigation_drawer): remove legacy nested android project Delete the redundant nested android/ project directory from the old layout. Also update pubspec.yaml SDK constraints and dependencies. * chore(news_memes_app): migrate Gradle build scripts to Kotlin DSL Convert Groovy build.gradle/settings.gradle to Kotlin DSL and bump Gradle wrapper. * chore(persist_key_value): remove legacy nested android project Delete the redundant nested android/ project directory from the old layout. Also update pubspec.yaml SDK constraints and dependencies. * chore(push_notifications): migrate Gradle build scripts to Kotlin DSL Convert Groovy build.gradle/settings.gradle to Kotlin DSL and bump Gradle wrapper. * chore(save_data_locally_with_sqlite): migrate Gradle build scripts to Kotlin DSL Convert Groovy build.gradle/settings.gradle to Kotlin DSL and bump Gradle wrapper. * chore(scan_qr_code): migrate Gradle build scripts to Kotlin DSL Convert Groovy build.gradle/settings.gradle to Kotlin DSL and bump Gradle wrapper. * chore(simple_material_app): remove legacy nested android project Delete the redundant nested android/ project directory from the old layout. Also update pubspec.yaml SDK constraints and dependencies. * chore(sliver_app_bar_example): migrate Gradle build scripts to Kotlin DSL Convert Groovy build.gradle/settings.gradle to Kotlin DSL and bump Gradle wrapper. * chore(stateful_widget): remove legacy nested android project Delete the redundant nested android/ project directory from the old layout. Also update pubspec.yaml SDK constraints and dependencies. * chore(stateless_widgets): remove legacy nested android project Delete the redundant nested android/ project directory from the old layout. Also update pubspec.yaml SDK constraints and dependencies. * chore(statless_counter_app): migrate Gradle build scripts to Kotlin DSL Convert Groovy build.gradle/settings.gradle to Kotlin DSL and bump Gradle wrapper. * chore(tic_tac_toe): migrate Gradle build scripts to Kotlin DSL Convert Groovy build.gradle/settings.gradle to Kotlin DSL and bump Gradle wrapper. * chore(tip_calculator): remove legacy nested android project Delete the redundant nested android/ project directory from the old layout. Also update pubspec.yaml SDK constraints and dependencies. * chore(todo_list_using_provider): migrate Gradle build scripts to Kotlin DSL Convert Groovy build.gradle/settings.gradle to Kotlin DSL and bump Gradle wrapper. * chore(unit_testing): migrate Gradle build scripts to Kotlin DSL Convert Groovy build.gradle/settings.gradle to Kotlin DSL and bump Gradle wrapper. * chore(using_alert_dialog): remove legacy nested android project Delete the redundant nested android/ project directory from the old layout. Also update pubspec.yaml SDK constraints and dependencies. * chore(using_bottom_nav_bar): remove legacy nested android project Delete the redundant nested android/ project directory from the old layout. Also update pubspec.yaml SDK constraints and dependencies. * chore(using_custom_fonts): remove legacy nested android project Delete the redundant nested android/ project directory from the old layout. Also update pubspec.yaml SDK constraints and dependencies. * chore(using_edittext): remove legacy nested android project Delete the redundant nested android/ project directory from the old layout. Also update pubspec.yaml SDK constraints and dependencies. * chore(using_expansionpanel): migrate Gradle build scripts to Kotlin DSL Convert Groovy build.gradle/settings.gradle to Kotlin DSL and bump Gradle wrapper. * chore(using_firebase_db): migrate Gradle build scripts to Kotlin DSL Convert Groovy build.gradle/settings.gradle to Kotlin DSL and bump Gradle wrapper. * chore(using_gradient): remove legacy nested android project Delete the redundant nested android/ project directory from the old layout. Also update pubspec.yaml SDK constraints and dependencies. * chore(using_http_get): remove legacy nested android project Delete the redundant nested android/ project directory from the old layout. Also update pubspec.yaml SDK constraints and dependencies. * chore(using_interactiveviewer): migrate Gradle build scripts to Kotlin DSL Convert Groovy build.gradle/settings.gradle to Kotlin DSL and bump Gradle wrapper. * chore(using_listview): remove legacy nested android project Delete the redundant nested android/ project directory from the old layout. Also update pubspec.yaml SDK constraints and dependencies. * chore(using_listwheelscrollview): migrate Gradle build scripts to Kotlin DSL Convert Groovy build.gradle/settings.gradle to Kotlin DSL and bump Gradle wrapper. * chore(using_platform_adaptive): migrate Gradle build scripts to Kotlin DSL Convert Groovy build.gradle/settings.gradle to Kotlin DSL and bump Gradle wrapper. * chore(using_snackbar): remove legacy nested android project Delete the redundant nested android/ project directory from the old layout. Also update pubspec.yaml SDK constraints and dependencies. * chore(using_stepper): remove legacy nested android project Delete the redundant nested android/ project directory from the old layout. Also update pubspec.yaml SDK constraints and dependencies. * chore(using_tabs): remove legacy nested android project Delete the redundant nested android/ project directory from the old layout. Also update pubspec.yaml SDK constraints and dependencies. * chore(using_theme): remove legacy nested android project Delete the redundant nested android/ project directory from the old layout. Also update pubspec.yaml SDK constraints and dependencies. * chore(view_pdf_file): migrate Gradle build scripts to Kotlin DSL Convert Groovy build.gradle/settings.gradle to Kotlin DSL and bump Gradle wrapper. * chore: ignore .trash directory * chore: remove IDE configs and PR template * chore(infinite_list): remove legacy nested android project * refactor(infinite_list): migrate theme to ColorScheme API * refactor(using_theme): migrate to ColorScheme API * refactor(analytics_integration): migrate Firebase Analytics API * refactor(firebase_google_authentication): migrate Google Sign-In API * refactor(covid19_mobile_app): migrate theme and buttons to current API * refactor(covid19_mobile_app): replace bezier_chart with fl_chart * refactor(image_editor): migrate image plugins and button styles * refactor(scan_qr_code): migrate mobile_scanner API * refactor(lunch_app): migrate to null safety * refactor(todo_list_using_provider): migrate to null safety * refactor(unit_testing): migrate to null safety * refactor(using_firebase_db): migrate Firebase Database API * fix(update_gradle_wrapper): edit gradle-wrapper.properties directly * refactor(push_notifications): migrate Firebase Messaging API * refactor(using_http_get): migrate to null safety * refactor(using_listview): migrate to null safety * refactor(using_listwheelscrollview): migrate to null safety * refactor(view_pdf_file): migrate to null safety * refactor(bottom_sheet): migrate to null safety * refactor(stateless_widgets): migrate to null safety * chore: regenerate Gradle wrapper * refactor: move maintenance scripts to Makefile * chore: remove generated and IDE files * fix: migrate image_editor to current plugins * fix: migrate news_memes_app share to share_plus * fix: migrate view_pdf_file to syncfusion pdf viewer * fix: update deprecated APIs * style: remove commented-out code
2026-08-25 01:05:36 +00:00 · 2026-08-17 13:58:51 +02:00
parent 80fe9bed92
commit 8745f7cf5a
2600 changed files with 9278 additions and 58100 deletions
--- a/using_snackbar/.dart_tool/package_config.json
+++ b/using_snackbar/.dart_tool/package_config.json
@@ -3,138 +3,164 @@
  "packages": [
    {
      "name": "async",
-      "rootUri": "file:///usr/local/Caskroom/flutter/2.8.1/flutter/.pub-cache/hosted/pub.dartlang.org/async-2.9.0",
+      "rootUri": "file:///Users/nishantsrivastava/.pub-cache/hosted/pub.dev/async-2.13.1",
      "packageUri": "lib/",
-      "languageVersion": "2.14"
+      "languageVersion": "3.4"
    },
    {
      "name": "boolean_selector",
-      "rootUri": "file:///usr/local/Caskroom/flutter/2.8.1/flutter/.pub-cache/hosted/pub.dartlang.org/boolean_selector-2.1.0",
+      "rootUri": "file:///Users/nishantsrivastava/.pub-cache/hosted/pub.dev/boolean_selector-2.1.2",
      "packageUri": "lib/",
-      "languageVersion": "2.12"
+      "languageVersion": "3.1"
    },
    {
      "name": "characters",
-      "rootUri": "file:///usr/local/Caskroom/flutter/2.8.1/flutter/.pub-cache/hosted/pub.dartlang.org/characters-1.2.1",
+      "rootUri": "file:///Users/nishantsrivastava/.pub-cache/hosted/pub.dev/characters-1.4.1",
      "packageUri": "lib/",
-      "languageVersion": "2.12"
+      "languageVersion": "3.4"
    },
    {
      "name": "clock",
-      "rootUri": "file:///usr/local/Caskroom/flutter/2.8.1/flutter/.pub-cache/hosted/pub.dartlang.org/clock-1.1.1",
+      "rootUri": "file:///Users/nishantsrivastava/.pub-cache/hosted/pub.dev/clock-1.1.2",
      "packageUri": "lib/",
-      "languageVersion": "2.12"
+      "languageVersion": "3.4"
    },
    {
      "name": "collection",
-      "rootUri": "file:///usr/local/Caskroom/flutter/2.8.1/flutter/.pub-cache/hosted/pub.dartlang.org/collection-1.16.0",
+      "rootUri": "file:///Users/nishantsrivastava/.pub-cache/hosted/pub.dev/collection-1.19.1",
      "packageUri": "lib/",
-      "languageVersion": "2.12"
+      "languageVersion": "3.4"
    },
    {
      "name": "cupertino_icons",
-      "rootUri": "file:///usr/local/Caskroom/flutter/2.8.1/flutter/.pub-cache/hosted/pub.dartlang.org/cupertino_icons-0.1.3",
+      "rootUri": "file:///Users/nishantsrivastava/.pub-cache/hosted/pub.dev/cupertino_icons-1.0.9",
      "packageUri": "lib/",
-      "languageVersion": "2.0"
+      "languageVersion": "3.9"
    },
    {
      "name": "fake_async",
-      "rootUri": "file:///usr/local/Caskroom/flutter/2.8.1/flutter/.pub-cache/hosted/pub.dartlang.org/fake_async-1.3.1",
+      "rootUri": "file:///Users/nishantsrivastava/.pub-cache/hosted/pub.dev/fake_async-1.3.3",
      "packageUri": "lib/",
-      "languageVersion": "2.12"
+      "languageVersion": "3.3"
    },
    {
      "name": "flutter",
-      "rootUri": "file:///usr/local/Caskroom/flutter/2.8.1/flutter/packages/flutter",
+      "rootUri": "file:///opt/homebrew/share/flutter/packages/flutter",
      "packageUri": "lib/",
-      "languageVersion": "2.17"
+      "languageVersion": "3.11"
    },
    {
      "name": "flutter_test",
-      "rootUri": "file:///usr/local/Caskroom/flutter/2.8.1/flutter/packages/flutter_test",
+      "rootUri": "file:///opt/homebrew/share/flutter/packages/flutter_test",
      "packageUri": "lib/",
-      "languageVersion": "2.17"
+      "languageVersion": "3.11"
+    },
+    {
+      "name": "leak_tracker",
+      "rootUri": "file:///Users/nishantsrivastava/.pub-cache/hosted/pub.dev/leak_tracker-11.0.2",
+      "packageUri": "lib/",
+      "languageVersion": "3.2"
+    },
+    {
+      "name": "leak_tracker_flutter_testing",
+      "rootUri": "file:///Users/nishantsrivastava/.pub-cache/hosted/pub.dev/leak_tracker_flutter_testing-3.0.10",
+      "packageUri": "lib/",
+      "languageVersion": "3.2"
+    },
+    {
+      "name": "leak_tracker_testing",
+      "rootUri": "file:///Users/nishantsrivastava/.pub-cache/hosted/pub.dev/leak_tracker_testing-3.0.2",
+      "packageUri": "lib/",
+      "languageVersion": "3.2"
    },
    {
      "name": "matcher",
-      "rootUri": "file:///usr/local/Caskroom/flutter/2.8.1/flutter/.pub-cache/hosted/pub.dartlang.org/matcher-0.12.12",
+      "rootUri": "file:///Users/nishantsrivastava/.pub-cache/hosted/pub.dev/matcher-0.12.20",
      "packageUri": "lib/",
-      "languageVersion": "2.12"
+      "languageVersion": "3.10"
    },
    {
      "name": "material_color_utilities",
-      "rootUri": "file:///usr/local/Caskroom/flutter/2.8.1/flutter/.pub-cache/hosted/pub.dartlang.org/material_color_utilities-0.1.5",
+      "rootUri": "file:///Users/nishantsrivastava/.pub-cache/hosted/pub.dev/material_color_utilities-0.13.0",
      "packageUri": "lib/",
-      "languageVersion": "2.13"
+      "languageVersion": "3.5"
    },
    {
      "name": "meta",
-      "rootUri": "file:///usr/local/Caskroom/flutter/2.8.1/flutter/.pub-cache/hosted/pub.dartlang.org/meta-1.8.0",
+      "rootUri": "file:///Users/nishantsrivastava/.pub-cache/hosted/pub.dev/meta-1.19.0",
      "packageUri": "lib/",
-      "languageVersion": "2.12"
+      "languageVersion": "3.5"
    },
    {
      "name": "path",
-      "rootUri": "file:///usr/local/Caskroom/flutter/2.8.1/flutter/.pub-cache/hosted/pub.dartlang.org/path-1.8.2",
+      "rootUri": "file:///Users/nishantsrivastava/.pub-cache/hosted/pub.dev/path-1.9.1",
      "packageUri": "lib/",
-      "languageVersion": "2.12"
+      "languageVersion": "3.4"
    },
    {
      "name": "sky_engine",
-      "rootUri": "file:///usr/local/Caskroom/flutter/2.8.1/flutter/bin/cache/pkg/sky_engine",
+      "rootUri": "file:///opt/homebrew/share/flutter/bin/cache/pkg/sky_engine",
      "packageUri": "lib/",
-      "languageVersion": "2.12"
+      "languageVersion": "3.11"
    },
    {
      "name": "source_span",
-      "rootUri": "file:///usr/local/Caskroom/flutter/2.8.1/flutter/.pub-cache/hosted/pub.dartlang.org/source_span-1.9.0",
+      "rootUri": "file:///Users/nishantsrivastava/.pub-cache/hosted/pub.dev/source_span-1.10.2",
      "packageUri": "lib/",
-      "languageVersion": "2.14"
+      "languageVersion": "3.1"
    },
    {
      "name": "stack_trace",
-      "rootUri": "file:///usr/local/Caskroom/flutter/2.8.1/flutter/.pub-cache/hosted/pub.dartlang.org/stack_trace-1.10.0",
+      "rootUri": "file:///Users/nishantsrivastava/.pub-cache/hosted/pub.dev/stack_trace-1.12.1",
      "packageUri": "lib/",
-      "languageVersion": "2.12"
+      "languageVersion": "3.4"
    },
    {
      "name": "stream_channel",
-      "rootUri": "file:///usr/local/Caskroom/flutter/2.8.1/flutter/.pub-cache/hosted/pub.dartlang.org/stream_channel-2.1.0",
+      "rootUri": "file:///Users/nishantsrivastava/.pub-cache/hosted/pub.dev/stream_channel-2.1.4",
      "packageUri": "lib/",
-      "languageVersion": "2.12"
+      "languageVersion": "3.3"
    },
    {
      "name": "string_scanner",
-      "rootUri": "file:///usr/local/Caskroom/flutter/2.8.1/flutter/.pub-cache/hosted/pub.dartlang.org/string_scanner-1.1.1",
+      "rootUri": "file:///Users/nishantsrivastava/.pub-cache/hosted/pub.dev/string_scanner-1.4.1",
      "packageUri": "lib/",
-      "languageVersion": "2.12"
+      "languageVersion": "3.1"
    },
    {
      "name": "term_glyph",
-      "rootUri": "file:///usr/local/Caskroom/flutter/2.8.1/flutter/.pub-cache/hosted/pub.dartlang.org/term_glyph-1.2.1",
+      "rootUri": "file:///Users/nishantsrivastava/.pub-cache/hosted/pub.dev/term_glyph-1.2.2",
      "packageUri": "lib/",
-      "languageVersion": "2.12"
+      "languageVersion": "3.1"
    },
    {
      "name": "test_api",
-      "rootUri": "file:///usr/local/Caskroom/flutter/2.8.1/flutter/.pub-cache/hosted/pub.dartlang.org/test_api-0.4.12",
+      "rootUri": "file:///Users/nishantsrivastava/.pub-cache/hosted/pub.dev/test_api-0.7.12",
      "packageUri": "lib/",
-      "languageVersion": "2.12"
+      "languageVersion": "3.10"
    },
    {
      "name": "vector_math",
-      "rootUri": "file:///usr/local/Caskroom/flutter/2.8.1/flutter/.pub-cache/hosted/pub.dartlang.org/vector_math-2.1.2",
+      "rootUri": "file:///Users/nishantsrivastava/.pub-cache/hosted/pub.dev/vector_math-2.4.2",
      "packageUri": "lib/",
-      "languageVersion": "2.14"
+      "languageVersion": "3.10"
+    },
+    {
+      "name": "vm_service",
+      "rootUri": "file:///Users/nishantsrivastava/.pub-cache/hosted/pub.dev/vm_service-15.2.0",
+      "packageUri": "lib/",
+      "languageVersion": "3.5"
    },
    {
      "name": "using_snackbar",
      "rootUri": "../",
      "packageUri": "lib/",
-      "languageVersion": "2.10"
+      "languageVersion": "3.0"
    }
  ],
-  "generated": "2022-10-22T19:15:30.676613Z",
  "generator": "pub",
-  "generatorVersion": "2.18.2"
+  "generatorVersion": "3.13.0",
+  "flutterRoot": "file:///opt/homebrew/share/flutter",
+  "flutterVersion": "3.47.0",
+  "pubCache": "file:///Users/nishantsrivastava/.pub-cache"
 }
--- a/using_snackbar/.dart_tool/version
+++ b/using_snackbar/.dart_tool/version
@@ -1 +1 @@
-3.3.5
+3.47.0
--- a/using_snackbar/android/.dart_tool/package_config.json
+++ b/using_snackbar/android/.dart_tool/package_config.json
@@ -1,146 +0,0 @@
-{
-  "configVersion": 2,
-  "packages": [
-    {
-      "name": "async",
-      "rootUri": "file:///home/zion/Documents/sdks/flutter/.pub-cache/hosted/pub.dartlang.org/async-2.5.0",
-      "packageUri": "lib/",
-      "languageVersion": "2.12"
-    },
-    {
-      "name": "boolean_selector",
-      "rootUri": "file:///home/zion/Documents/sdks/flutter/.pub-cache/hosted/pub.dartlang.org/boolean_selector-2.1.0",
-      "packageUri": "lib/",
-      "languageVersion": "2.12"
-    },
-    {
-      "name": "characters",
-      "rootUri": "file:///home/zion/Documents/sdks/flutter/.pub-cache/hosted/pub.dartlang.org/characters-1.1.0",
-      "packageUri": "lib/",
-      "languageVersion": "2.12"
-    },
-    {
-      "name": "charcode",
-      "rootUri": "file:///home/zion/Documents/sdks/flutter/.pub-cache/hosted/pub.dartlang.org/charcode-1.2.0",
-      "packageUri": "lib/",
-      "languageVersion": "2.12"
-    },
-    {
-      "name": "clock",
-      "rootUri": "file:///home/zion/Documents/sdks/flutter/.pub-cache/hosted/pub.dartlang.org/clock-1.1.0",
-      "packageUri": "lib/",
-      "languageVersion": "2.12"
-    },
-    {
-      "name": "collection",
-      "rootUri": "file:///home/zion/Documents/sdks/flutter/.pub-cache/hosted/pub.dartlang.org/collection-1.15.0",
-      "packageUri": "lib/",
-      "languageVersion": "2.12"
-    },
-    {
-      "name": "cupertino_icons",
-      "rootUri": "file:///home/zion/Documents/sdks/flutter/.pub-cache/hosted/pub.dartlang.org/cupertino_icons-0.1.3",
-      "packageUri": "lib/",
-      "languageVersion": "2.0"
-    },
-    {
-      "name": "fake_async",
-      "rootUri": "file:///home/zion/Documents/sdks/flutter/.pub-cache/hosted/pub.dartlang.org/fake_async-1.2.0",
-      "packageUri": "lib/",
-      "languageVersion": "2.12"
-    },
-    {
-      "name": "flutter",
-      "rootUri": "file:///home/zion/Documents/sdks/flutter/packages/flutter",
-      "packageUri": "lib/",
-      "languageVersion": "2.12"
-    },
-    {
-      "name": "flutter_test",
-      "rootUri": "file:///home/zion/Documents/sdks/flutter/packages/flutter_test",
-      "packageUri": "lib/",
-      "languageVersion": "2.12"
-    },
-    {
-      "name": "matcher",
-      "rootUri": "file:///home/zion/Documents/sdks/flutter/.pub-cache/hosted/pub.dartlang.org/matcher-0.12.10",
-      "packageUri": "lib/",
-      "languageVersion": "2.12"
-    },
-    {
-      "name": "meta",
-      "rootUri": "file:///home/zion/Documents/sdks/flutter/.pub-cache/hosted/pub.dartlang.org/meta-1.3.0",
-      "packageUri": "lib/",
-      "languageVersion": "2.12"
-    },
-    {
-      "name": "path",
-      "rootUri": "file:///home/zion/Documents/sdks/flutter/.pub-cache/hosted/pub.dartlang.org/path-1.8.0",
-      "packageUri": "lib/",
-      "languageVersion": "2.12"
-    },
-    {
-      "name": "sky_engine",
-      "rootUri": "file:///home/zion/Documents/sdks/flutter/bin/cache/pkg/sky_engine",
-      "packageUri": "lib/",
-      "languageVersion": "2.12"
-    },
-    {
-      "name": "source_span",
-      "rootUri": "file:///home/zion/Documents/sdks/flutter/.pub-cache/hosted/pub.dartlang.org/source_span-1.8.0",
-      "packageUri": "lib/",
-      "languageVersion": "2.12"
-    },
-    {
-      "name": "stack_trace",
-      "rootUri": "file:///home/zion/Documents/sdks/flutter/.pub-cache/hosted/pub.dartlang.org/stack_trace-1.10.0",
-      "packageUri": "lib/",
-      "languageVersion": "2.12"
-    },
-    {
-      "name": "stream_channel",
-      "rootUri": "file:///home/zion/Documents/sdks/flutter/.pub-cache/hosted/pub.dartlang.org/stream_channel-2.1.0",
-      "packageUri": "lib/",
-      "languageVersion": "2.12"
-    },
-    {
-      "name": "string_scanner",
-      "rootUri": "file:///home/zion/Documents/sdks/flutter/.pub-cache/hosted/pub.dartlang.org/string_scanner-1.1.0",
-      "packageUri": "lib/",
-      "languageVersion": "2.12"
-    },
-    {
-      "name": "term_glyph",
-      "rootUri": "file:///home/zion/Documents/sdks/flutter/.pub-cache/hosted/pub.dartlang.org/term_glyph-1.2.0",
-      "packageUri": "lib/",
-      "languageVersion": "2.12"
-    },
-    {
-      "name": "test_api",
-      "rootUri": "file:///home/zion/Documents/sdks/flutter/.pub-cache/hosted/pub.dartlang.org/test_api-0.2.19",
-      "packageUri": "lib/",
-      "languageVersion": "2.12"
-    },
-    {
-      "name": "typed_data",
-      "rootUri": "file:///home/zion/Documents/sdks/flutter/.pub-cache/hosted/pub.dartlang.org/typed_data-1.3.0",
-      "packageUri": "lib/",
-      "languageVersion": "2.12"
-    },
-    {
-      "name": "vector_math",
-      "rootUri": "file:///home/zion/Documents/sdks/flutter/.pub-cache/hosted/pub.dartlang.org/vector_math-2.1.0",
-      "packageUri": "lib/",
-      "languageVersion": "2.12"
-    },
-    {
-      "name": "android",
-      "rootUri": "../",
-      "packageUri": "lib/",
-      "languageVersion": "2.10"
-    }
-  ],
-  "generated": "2021-07-25T18:45:26.121568Z",
-  "generator": "pub",
-  "generatorVersion": "2.12.2"
-}
--- a/using_snackbar/android/.gitignore
+++ b/using_snackbar/android/.gitignore
@@ -1,9 +0,0 @@
-*.iml
-.gradle
-/local.properties
-/.idea/workspace.xml
-/.idea/libraries
-.DS_Store
-/build
-/captures
-GeneratedPluginRegistrant.java
--- a/using_snackbar/android/.metadata
+++ b/using_snackbar/android/.metadata
@@ -1,10 +0,0 @@
-# This file tracks properties of this Flutter project.
-# Used by Flutter tool to assess capabilities and perform upgrades etc.
-#
-# This file should be version controlled and should not be manually edited.
-
-version:
-  revision: bbfbf1770cca2da7c82e887e4e4af910034800b6
-  channel: stable
-
-project_type: app
--- a/using_snackbar/android/README.md
+++ b/using_snackbar/android/README.md
@@ -1,16 +0,0 @@
-# android
-
-A new Flutter project.
-
-## Getting Started
-
-This project is a starting point for a Flutter application.
-
-A few resources to get you started if this is your first Flutter project:
-
- [Lab: Write your first Flutter app](https://flutter.dev/docs/get-started/codelab)
- [Cookbook: Useful Flutter samples](https://flutter.dev/docs/cookbook)
-
-For help getting started with Flutter, view our
-[online documentation](https://flutter.dev/docs), which offers tutorials,
-samples, guidance on mobile development, and a full API reference.
--- a/using_snackbar/android/android/.gitignore
+++ b/using_snackbar/android/android/.gitignore
@@ -1,11 +0,0 @@
-gradle-wrapper.jar
-/.gradle
-/captures/
-/gradlew
-/gradlew.bat
-/local.properties
-GeneratedPluginRegistrant.java
-
-# Remember to never publicly share your keystore.
-# See https://flutter.dev/docs/deployment/android#reference-the-keystore-from-the-app
-key.properties
--- a/using_snackbar/android/android/app/build.gradle
+++ b/using_snackbar/android/android/app/build.gradle
@@ -1,63 +0,0 @@
-def localProperties = new Properties()
-def localPropertiesFile = rootProject.file('local.properties')
-if (localPropertiesFile.exists()) {
-    localPropertiesFile.withReader('UTF-8') { reader ->
-        localProperties.load(reader)
-    }
-}
-
-def flutterRoot = localProperties.getProperty('flutter.sdk')
-if (flutterRoot == null) {
-    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
-}
-
-def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
-if (flutterVersionCode == null) {
-    flutterVersionCode = '1'
-}
-
-def flutterVersionName = localProperties.getProperty('flutter.versionName')
-if (flutterVersionName == null) {
-    flutterVersionName = '1.0'
-}
-
-apply plugin: 'com.android.application'
-apply plugin: 'kotlin-android'
-apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
-
-android {
-    compileSdkVersion 28
-
-    sourceSets {
-        main.java.srcDirs += 'src/main/kotlin'
-    }
-
-    lintOptions {
-        disable 'InvalidPackage'
-    }
-
-    defaultConfig {
-        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
-        applicationId "com.example.android"
-        minSdkVersion 16
-        targetSdkVersion 28
-        versionCode flutterVersionCode.toInteger()
-        versionName flutterVersionName
-    }
-
-    buildTypes {
-        release {
-            // TODO: Add your own signing config for the release build.
-            // Signing with the debug keys for now, so `flutter run --release` works.
-            signingConfig signingConfigs.debug
-        }
-    }
-}
-
-flutter {
-    source '../..'
-}
-
-dependencies {
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
-}
--- a/using_snackbar/android/android/app/src/debug/AndroidManifest.xml
+++ b/using_snackbar/android/android/app/src/debug/AndroidManifest.xml
@@ -1,7 +0,0 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.example.android">
-    <!-- Flutter needs it to communicate with the running application
-         to allow setting breakpoints, to provide hot reload, etc.
-    -->
-    <uses-permission android:name="android.permission.INTERNET"/>
-</manifest>
--- a/using_snackbar/android/android/app/src/main/AndroidManifest.xml
+++ b/using_snackbar/android/android/app/src/main/AndroidManifest.xml
@@ -1,47 +0,0 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.example.android">
-    <!-- io.flutter.app.FlutterApplication is an android.app.Application that
-         calls FlutterMain.startInitialization(this); in its onCreate method.
-         In most cases you can leave this as-is, but you if you want to provide
-         additional functionality it is fine to subclass or reimplement
-         FlutterApplication and put your custom class here. -->
-    <application
-        android:name="${applicationName}"
-        android:label="android"
-        android:icon="@mipmap/ic_launcher">
-        <activity
-            android:name="io.flutter.embedding.android.FlutterActivity"
-            android:launchMode="singleTop"
-            android:theme="@style/LaunchTheme"
-            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
-            android:hardwareAccelerated="true"
-            android:windowSoftInputMode="adjustResize">
-            <!-- Specifies an Android theme to apply to this Activity as soon as
-                 the Android process has started. This theme is visible to the user
-                 while the Flutter UI initializes. After that, this theme continues
-                 to determine the Window background behind the Flutter UI. -->
-            <meta-data
-              android:name="io.flutter.embedding.android.NormalTheme"
-              android:resource="@style/NormalTheme"
-              />
-            <!-- Displays an Android View that continues showing the launch screen
-                 Drawable until Flutter paints its first frame, then this splash
-                 screen fades out. A splash screen is useful to avoid any visual
-                 gap between the end of Android's launch screen and the painting of
-                 Flutter's first frame. -->
-            <meta-data
-              android:name="io.flutter.embedding.android.SplashScreenDrawable"
-              android:resource="@drawable/launch_background"
-              />
-            <intent-filter>
-                <action android:name="android.intent.action.MAIN"/>
-                <category android:name="android.intent.category.LAUNCHER"/>
-            </intent-filter>
-        </activity>
-        <!-- Don't delete the meta-data below.
-             This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
-        <meta-data
-            android:name="flutterEmbedding"
-            android:value="2" />
-    </application>
-</manifest>
--- a/using_snackbar/android/android/app/src/main/res/drawable/launch_background.xml
+++ b/using_snackbar/android/android/app/src/main/res/drawable/launch_background.xml
@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Modify this file to customize your launch splash screen -->
-<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
-    <item android:drawable="@android:color/white" />
-
-    <!-- You can insert your own image assets here -->
-    <!-- <item>
-        <bitmap
-            android:gravity="center"
-            android:src="@mipmap/launch_image" />
-    </item> -->
-</layer-list>
--- a/using_snackbar/android/android/app/src/main/res/mipmap-hdpi/ic_launcher.png
+++ b/using_snackbar/android/android/app/src/main/res/mipmap-hdpi/ic_launcher.png
--- a/using_snackbar/android/android/app/src/main/res/mipmap-mdpi/ic_launcher.png
+++ b/using_snackbar/android/android/app/src/main/res/mipmap-mdpi/ic_launcher.png
--- a/using_snackbar/android/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png
+++ b/using_snackbar/android/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png
--- a/using_snackbar/android/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
+++ b/using_snackbar/android/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
--- a/using_snackbar/android/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
+++ b/using_snackbar/android/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
--- a/using_snackbar/android/android/app/src/main/res/values/styles.xml
+++ b/using_snackbar/android/android/app/src/main/res/values/styles.xml
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-    <!-- Theme applied to the Android Window while the process is starting -->
-    <style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
-        <!-- Show a splash screen on the activity. Automatically removed when
-             Flutter draws its first frame -->
-        <item name="android:windowBackground">@drawable/launch_background</item>
-    </style>
-    <!-- Theme applied to the Android Window as soon as the process has started.
-         This theme determines the color of the Android Window while your
-         Flutter UI initializes, as well as behind your Flutter UI while its
-         running.
-         
-         This Theme is only used starting with V2 of Flutter's Android embedding. -->
-    <style name="NormalTheme" parent="@android:style/Theme.Black.NoTitleBar">
-        <item name="android:windowBackground">@android:color/white</item>
-    </style>
-</resources>
--- a/using_snackbar/android/android/app/src/profile/AndroidManifest.xml
+++ b/using_snackbar/android/android/app/src/profile/AndroidManifest.xml
@@ -1,7 +0,0 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.example.android">
-    <!-- Flutter needs it to communicate with the running application
-         to allow setting breakpoints, to provide hot reload, etc.
-    -->
-    <uses-permission android:name="android.permission.INTERNET"/>
-</manifest>
--- a/using_snackbar/android/android/build.gradle
+++ b/using_snackbar/android/android/build.gradle
@@ -1,31 +0,0 @@
-buildscript {
-    ext.kotlin_version = '1.4.32'
-    repositories {
-        google()
-        mavenCentral()
-    }
-
-    dependencies {
-        classpath 'com.android.tools.build:gradle:4.1.3'
-        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
-    }
-}
-
-allprojects {
-    repositories {
-        google()
-        mavenCentral()
-    }
-}
-
-rootProject.buildDir = '../build'
-subprojects {
-    project.buildDir = "${rootProject.buildDir}/${project.name}"
-}
-subprojects {
-    project.evaluationDependsOn(':app')
-}
-
-task clean(type: Delete) {
-    delete rootProject.buildDir
-}
--- a/using_snackbar/android/android/gradle.properties
+++ b/using_snackbar/android/android/gradle.properties
@@ -1,4 +0,0 @@
-org.gradle.jvmargs=-Xmx1536M
-android.enableR8=true
-android.useAndroidX=true
-android.enableJetifier=true
--- a/using_snackbar/android/android/gradle/wrapper/gradle-wrapper.properties
+++ b/using_snackbar/android/android/gradle/wrapper/gradle-wrapper.properties
@@ -1,7 +0,0 @@
-distributionBase=GRADLE_USER_HOME
-distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.4-bin.zip
-networkTimeout=10000
-validateDistributionUrl=true
-zipStoreBase=GRADLE_USER_HOME
-zipStorePath=wrapper/dists
--- a/using_snackbar/android/android/settings.gradle
+++ b/using_snackbar/android/android/settings.gradle
@@ -1,11 +0,0 @@
-include ':app'
-
-def localPropertiesFile = new File(rootProject.projectDir, "local.properties")
-def properties = new Properties()
-
-assert localPropertiesFile.exists()
-localPropertiesFile.withReader("UTF-8") { reader -> properties.load(reader) }
-
-def flutterSdkPath = properties.getProperty("flutter.sdk")
-assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
-apply from: "$flutterSdkPath/packages/flutter_tools/gradle/app_plugin_loader.gradle"
--- a/using_snackbar/android/app/build.gradle
+++ b/using_snackbar/android/app/build.gradle
@@ -1,52 +0,0 @@
-def localProperties = new Properties()
-def localPropertiesFile = rootProject.file('local.properties')
-if (localPropertiesFile.exists()) {
-    localPropertiesFile.withInputStream { stream ->
-        localProperties.load(stream)
-    }
-}
-
-def flutterRoot = localProperties.getProperty('flutter.sdk')
-if (flutterRoot == null) {
-    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
-}
-
-apply plugin: 'com.android.application'
-apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
-
-android {
-    compileSdkVersion 29
-    
-
-    lintOptions {
-        disable 'InvalidPackage'
-    }
-
-    defaultConfig {
-        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
-        applicationId "github.nisrulz.usingsnackbar"
-        minSdkVersion 16
-        targetSdkVersion 29
-        versionCode 1
-        versionName "1.0"
-        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
-    }
-
-    buildTypes {
-        release {
-            // TODO: Add your own signing config for the release build.
-            // Signing with the debug keys for now, so `flutter run --release` works.
-            signingConfig signingConfigs.debug
-        }
-    }
-}
-
-flutter {
-    source '../..'
-}
-
-dependencies {
-    androidTestImplementation 'androidx.annotation:annotation:1.1.0'
-    androidTestImplementation 'androidx.test:runner:1.2.0'
-    androidTestImplementation 'androidx.test:runner:1.20' 
-}
--- a/using_snackbar/android/app/src/main/AndroidManifest.xml
+++ b/using_snackbar/android/app/src/main/AndroidManifest.xml
@@ -1,37 +0,0 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="github.nisrulz.usingsnackbar">
-
-    <!-- The INTERNET permission is required for development. Specifically,
-         flutter needs it to communicate with the running application
-         to allow setting breakpoints, to provide hot reload, etc.
-    -->
-    <uses-permission android:name="android.permission.INTERNET"/>
-
-    <!-- io.flutter.app.FlutterApplication is an android.app.Application that
-         calls FlutterMain.startInitialization(this); in its onCreate method.
-         In most cases you can leave this as-is, but you if you want to provide
-         additional functionality it is fine to subclass or reimplement
-         FlutterApplication and put your custom class here. -->
-    <application
-        android:name="${applicationName}"
-        android:label="using_snackbar"
-        android:icon="@mipmap/ic_launcher">
-        <activity
-            android:name="io.flutter.embedding.android.FlutterActivity"
-            android:launchMode="singleTop"
-            android:theme="@style/LaunchTheme"
-            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale"
-            android:hardwareAccelerated="true"
-            android:windowSoftInputMode="adjustResize">
-            <!-- This keeps the window background of the activity showing
-                 until Flutter renders its first frame. It can be removed if
-                 there is no splash screen (such as the default splash screen
-                 defined in @style/LaunchTheme). -->
-           
-            <intent-filter>
-                <action android:name="android.intent.action.MAIN"/>
-                <category android:name="android.intent.category.LAUNCHER"/>
-            </intent-filter>
-        </activity>
-    </application>
-</manifest>
--- a/using_snackbar/android/app/src/main/res/drawable/launch_background.xml
+++ b/using_snackbar/android/app/src/main/res/drawable/launch_background.xml
@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Modify this file to customize your launch splash screen -->
-<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
-    <item android:drawable="@android:color/white" />
-
-    <!-- You can insert your own image assets here -->
-    <!-- <item>
-        <bitmap
-            android:gravity="center"
-            android:src="@mipmap/launch_image" />
-    </item> -->
-</layer-list>
--- a/using_snackbar/android/app/src/main/res/mipmap-hdpi/ic_launcher.png
+++ b/using_snackbar/android/app/src/main/res/mipmap-hdpi/ic_launcher.png
--- a/using_snackbar/android/app/src/main/res/mipmap-mdpi/ic_launcher.png
+++ b/using_snackbar/android/app/src/main/res/mipmap-mdpi/ic_launcher.png
--- a/using_snackbar/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png
+++ b/using_snackbar/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png
--- a/using_snackbar/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
+++ b/using_snackbar/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
--- a/using_snackbar/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
+++ b/using_snackbar/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
--- a/using_snackbar/android/app/src/main/res/values/styles.xml
+++ b/using_snackbar/android/app/src/main/res/values/styles.xml
@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-    <style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
-        <!-- Show a splash screen on the activity. Automatically removed when
-             Flutter draws its first frame -->
-        <item name="android:windowBackground">@drawable/launch_background</item>
-    </style>
-</resources>
--- a/using_snackbar/android/build.gradle
+++ b/using_snackbar/android/build.gradle
@@ -1,27 +0,0 @@
-buildscript {
-    repositories {
-        google()
-        mavenCentral()
-    }
-
-    dependencies {
-        classpath 'com.android.tools.build:gradle:4.1.3'
-    }
-}
-
-allprojects {
-    repositories {
-        google()
-        mavenCentral()
-    }
-}
-
-rootProject.buildDir = '../build'
-subprojects {
-    project.buildDir = "${rootProject.buildDir}/${project.name}"
-    project.evaluationDependsOn(':app')
-}
-
-task clean(type: Delete) {
-    delete rootProject.buildDir
-}
--- a/using_snackbar/android/gradle.properties
+++ b/using_snackbar/android/gradle.properties
@@ -1 +0,0 @@
-org.gradle.jvmargs=-Xmx1536M
--- a/using_snackbar/android/gradle/wrapper/gradle-wrapper.jar
+++ b/using_snackbar/android/gradle/wrapper/gradle-wrapper.jar
--- a/using_snackbar/android/gradle/wrapper/gradle-wrapper.properties
+++ b/using_snackbar/android/gradle/wrapper/gradle-wrapper.properties
@@ -1,7 +0,0 @@
-distributionBase=GRADLE_USER_HOME
-distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.4-bin.zip
-networkTimeout=10000
-validateDistributionUrl=true
-zipStoreBase=GRADLE_USER_HOME
-zipStorePath=wrapper/dists
--- a/using_snackbar/android/gradlew
+++ b/using_snackbar/android/gradlew
@@ -1,249 +0,0 @@
-#!/bin/sh
-
-#
-# Copyright © 2015-2021 the original authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      https://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-##############################################################################
-#
-#   Gradle start up script for POSIX generated by Gradle.
-#
-#   Important for running:
-#
-#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
-#       noncompliant, but you have some other compliant shell such as ksh or
-#       bash, then to run this script, type that shell name before the whole
-#       command line, like:
-#
-#           ksh Gradle
-#
-#       Busybox and similar reduced shells will NOT work, because this script
-#       requires all of these POSIX shell features:
-#         * functions;
-#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
-#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
-#         * compound commands having a testable exit status, especially «case»;
-#         * various built-in commands including «command», «set», and «ulimit».
-#
-#   Important for patching:
-#
-#   (2) This script targets any POSIX shell, so it avoids extensions provided
-#       by Bash, Ksh, etc; in particular arrays are avoided.
-#
-#       The "traditional" practice of packing multiple parameters into a
-#       space-separated string is a well documented source of bugs and security
-#       problems, so this is (mostly) avoided, by progressively accumulating
-#       options in "$@", and eventually passing that to Java.
-#
-#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
-#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
-#       see the in-line comments for details.
-#
-#       There are tweaks for specific operating systems such as AIX, CygWin,
-#       Darwin, MinGW, and NonStop.
-#
-#   (3) This script is generated from the Groovy template
-#       https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
-#       within the Gradle project.
-#
-#       You can find Gradle at https://github.com/gradle/gradle/.
-#
-##############################################################################
-
-# Attempt to set APP_HOME
-
-# Resolve links: $0 may be a link
-app_path=$0
-
-# Need this for daisy-chained symlinks.
-while
-    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
-    [ -h "$app_path" ]
-do
-    ls=$( ls -ld "$app_path" )
-    link=${ls#*' -> '}
-    case $link in             #(
-      /*)   app_path=$link ;; #(
-      *)    app_path=$APP_HOME$link ;;
-    esac
-done
-
-# This is normally unused
-# shellcheck disable=SC2034
-APP_BASE_NAME=${0##*/}
-# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
-APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
-
-# Use the maximum available, or set MAX_FD != -1 to use that value.
-MAX_FD=maximum
-
-warn () {
-    echo "$*"
-} >&2
-
-die () {
-    echo
-    echo "$*"
-    echo
-    exit 1
-} >&2
-
-# OS specific support (must be 'true' or 'false').
-cygwin=false
-msys=false
-darwin=false
-nonstop=false
-case "$( uname )" in                #(
-  CYGWIN* )         cygwin=true  ;; #(
-  Darwin* )         darwin=true  ;; #(
-  MSYS* | MINGW* )  msys=true    ;; #(
-  NONSTOP* )        nonstop=true ;;
-esac
-
-CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
-
-
-# Determine the Java command to use to start the JVM.
-if [ -n "$JAVA_HOME" ] ; then
-    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
-        # IBM's JDK on AIX uses strange locations for the executables
-        JAVACMD=$JAVA_HOME/jre/sh/java
-    else
-        JAVACMD=$JAVA_HOME/bin/java
-    fi
-    if [ ! -x "$JAVACMD" ] ; then
-        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
-
-Please set the JAVA_HOME variable in your environment to match the
-location of your Java installation."
-    fi
-else
-    JAVACMD=java
-    if ! command -v java >/dev/null 2>&1
-    then
-        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
-
-Please set the JAVA_HOME variable in your environment to match the
-location of your Java installation."
-    fi
-fi
-
-# Increase the maximum file descriptors if we can.
-if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
-    case $MAX_FD in #(
-      max*)
-        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
-        # shellcheck disable=SC2039,SC3045
-        MAX_FD=$( ulimit -H -n ) ||
-            warn "Could not query maximum file descriptor limit"
-    esac
-    case $MAX_FD in  #(
-      '' | soft) :;; #(
-      *)
-        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
-        # shellcheck disable=SC2039,SC3045
-        ulimit -n "$MAX_FD" ||
-            warn "Could not set maximum file descriptor limit to $MAX_FD"
-    esac
-fi
-
-# Collect all arguments for the java command, stacking in reverse order:
-#   * args from the command line
-#   * the main class name
-#   * -classpath
-#   * -D...appname settings
-#   * --module-path (only if needed)
-#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
-
-# For Cygwin or MSYS, switch paths to Windows format before running java
-if "$cygwin" || "$msys" ; then
-    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
-    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
-
-    JAVACMD=$( cygpath --unix "$JAVACMD" )
-
-    # Now convert the arguments - kludge to limit ourselves to /bin/sh
-    for arg do
-        if
-            case $arg in                                #(
-              -*)   false ;;                            # don't mess with options #(
-              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
-                    [ -e "$t" ] ;;                      #(
-              *)    false ;;
-            esac
-        then
-            arg=$( cygpath --path --ignore --mixed "$arg" )
-        fi
-        # Roll the args list around exactly as many times as the number of
-        # args, so each arg winds up back in the position where it started, but
-        # possibly modified.
-        #
-        # NB: a `for` loop captures its iteration list before it begins, so
-        # changing the positional parameters here affects neither the number of
-        # iterations, nor the values presented in `arg`.
-        shift                   # remove old arg
-        set -- "$@" "$arg"      # push replacement arg
-    done
-fi
-
-
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
-
-# Collect all arguments for the java command:
-#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
-#     and any embedded shellness will be escaped.
-#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
-#     treated as '${Hostname}' itself on the command line.
-
-set -- \
-        "-Dorg.gradle.appname=$APP_BASE_NAME" \
-        -classpath "$CLASSPATH" \
-        org.gradle.wrapper.GradleWrapperMain \
-        "$@"
-
-# Stop when "xargs" is not available.
-if ! command -v xargs >/dev/null 2>&1
-then
-    die "xargs is not available"
-fi
-
-# Use "xargs" to parse quoted args.
-#
-# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
-#
-# In Bash we could simply go:
-#
-#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
-#   set -- "${ARGS[@]}" "$@"
-#
-# but POSIX shell has neither arrays nor command substitution, so instead we
-# post-process each arg (as a line of input to sed) to backslash-escape any
-# character that might be a shell metacharacter, then use eval to reverse
-# that process (while maintaining the separation between arguments), and wrap
-# the whole thing up as a single "set" statement.
-#
-# This will of course break if any of these variables contains a newline or
-# an unmatched quote.
-#
-
-eval "set -- $(
-        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
-        xargs -n1 |
-        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
-        tr '\n' ' '
-    )" '"$@"'
-
-exec "$JAVACMD" "$@"
--- a/using_snackbar/android/gradlew.bat
+++ b/using_snackbar/android/gradlew.bat
@@ -1,92 +0,0 @@
-@rem
-@rem Copyright 2015 the original author or authors.
-@rem
-@rem Licensed under the Apache License, Version 2.0 (the "License");
-@rem you may not use this file except in compliance with the License.
-@rem You may obtain a copy of the License at
-@rem
-@rem      https://www.apache.org/licenses/LICENSE-2.0
-@rem
-@rem Unless required by applicable law or agreed to in writing, software
-@rem distributed under the License is distributed on an "AS IS" BASIS,
-@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-@rem See the License for the specific language governing permissions and
-@rem limitations under the License.
-@rem
-
-@if "%DEBUG%"=="" @echo off
-@rem ##########################################################################
-@rem
-@rem  Gradle startup script for Windows
-@rem
-@rem ##########################################################################
-
-@rem Set local scope for the variables with windows NT shell
-if "%OS%"=="Windows_NT" setlocal
-
-set DIRNAME=%~dp0
-if "%DIRNAME%"=="" set DIRNAME=.
-@rem This is normally unused
-set APP_BASE_NAME=%~n0
-set APP_HOME=%DIRNAME%
-
-@rem Resolve any "." and ".." in APP_HOME to make it shorter.
-for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
-
-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
-
-@rem Find java.exe
-if defined JAVA_HOME goto findJavaFromJavaHome
-
-set JAVA_EXE=java.exe
-%JAVA_EXE% -version >NUL 2>&1
-if %ERRORLEVEL% equ 0 goto execute
-
-echo.
-echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
-
-goto fail
-
-:findJavaFromJavaHome
-set JAVA_HOME=%JAVA_HOME:"=%
-set JAVA_EXE=%JAVA_HOME%/bin/java.exe
-
-if exist "%JAVA_EXE%" goto execute
-
-echo.
-echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
-
-goto fail
-
-:execute
-@rem Setup the command line
-
-set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
-
-
-@rem Execute Gradle
-"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
-
-:end
-@rem End local scope for the variables with windows NT shell
-if %ERRORLEVEL% equ 0 goto mainEnd
-
-:fail
-rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
-rem the _cmd.exe /c_ return code!
-set EXIT_CODE=%ERRORLEVEL%
-if %EXIT_CODE% equ 0 set EXIT_CODE=1
-if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
-exit /b %EXIT_CODE%
-
-:mainEnd
-if "%OS%"=="Windows_NT" endlocal
-
-:omega
--- a/using_snackbar/android/ios/.gitignore
+++ b/using_snackbar/android/ios/.gitignore
@@ -1,32 +0,0 @@
-*.mode1v3
-*.mode2v3
-*.moved-aside
-*.pbxuser
-*.perspectivev3
-**/*sync/
-.sconsign.dblite
-.tags*
-**/.vagrant/
-**/DerivedData/
-Icon?
-**/Pods/
-**/.symlinks/
-profile
-xcuserdata
-**/.generated/
-Flutter/App.framework
-Flutter/Flutter.framework
-Flutter/Flutter.podspec
-Flutter/Generated.xcconfig
-Flutter/app.flx
-Flutter/app.zip
-Flutter/flutter_assets/
-Flutter/flutter_export_environment.sh
-ServiceDefinitions.json
-Runner/GeneratedPluginRegistrant.*
-
-# Exceptions to above rules.
-!default.mode1v3
-!default.mode2v3
-!default.pbxuser
-!default.perspectivev3
--- a/using_snackbar/android/ios/Flutter/AppFrameworkInfo.plist
+++ b/using_snackbar/android/ios/Flutter/AppFrameworkInfo.plist
@@ -1,26 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-  <key>CFBundleDevelopmentRegion</key>
-  <string>$(DEVELOPMENT_LANGUAGE)</string>
-  <key>CFBundleExecutable</key>
-  <string>App</string>
-  <key>CFBundleIdentifier</key>
-  <string>io.flutter.flutter.app</string>
-  <key>CFBundleInfoDictionaryVersion</key>
-  <string>6.0</string>
-  <key>CFBundleName</key>
-  <string>App</string>
-  <key>CFBundlePackageType</key>
-  <string>FMWK</string>
-  <key>CFBundleShortVersionString</key>
-  <string>1.0</string>
-  <key>CFBundleSignature</key>
-  <string>????</string>
-  <key>CFBundleVersion</key>
-  <string>1.0</string>
-  <key>MinimumOSVersion</key>
-  <string>8.0</string>
-</dict>
-</plist>
--- a/using_snackbar/android/ios/Flutter/Debug.xcconfig
+++ b/using_snackbar/android/ios/Flutter/Debug.xcconfig
@@ -1 +0,0 @@
-#include "Generated.xcconfig"
--- a/using_snackbar/android/ios/Flutter/Release.xcconfig
+++ b/using_snackbar/android/ios/Flutter/Release.xcconfig
@@ -1 +0,0 @@
-#include "Generated.xcconfig"
--- a/using_snackbar/android/ios/Runner.xcodeproj/project.pbxproj
+++ b/using_snackbar/android/ios/Runner.xcodeproj/project.pbxproj
@@ -1,495 +0,0 @@
-// !$*UTF8*$!
-{
-	archiveVersion = 1;
-	classes = {
-	};
-	objectVersion = 46;
-	objects = {
-
-/* Begin PBXBuildFile section */
-		1498D2341E8E89220040F4C2 /* GeneratedPluginRegistrant.m in Sources */ = {isa = PBXBuildFile; fileRef = 1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */; };
-		3B3967161E833CAA004F5970 /* AppFrameworkInfo.plist in Resources */ = {isa = PBXBuildFile; fileRef = 3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */; };
-		74858FAF1ED2DC5600515810 /* AppDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = 74858FAE1ED2DC5600515810 /* AppDelegate.swift */; };
-		97C146FC1CF9000F007C117D /* Main.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FA1CF9000F007C117D /* Main.storyboard */; };
-		97C146FE1CF9000F007C117D /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FD1CF9000F007C117D /* Assets.xcassets */; };
-		97C147011CF9000F007C117D /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FF1CF9000F007C117D /* LaunchScreen.storyboard */; };
-/* End PBXBuildFile section */
-
-/* Begin PBXCopyFilesBuildPhase section */
-		9705A1C41CF9048500538489 /* Embed Frameworks */ = {
-			isa = PBXCopyFilesBuildPhase;
-			buildActionMask = 2147483647;
-			dstPath = "";
-			dstSubfolderSpec = 10;
-			files = (
-			);
-			name = "Embed Frameworks";
-			runOnlyForDeploymentPostprocessing = 0;
-		};
-/* End PBXCopyFilesBuildPhase section */
-
-/* Begin PBXFileReference section */
-		1498D2321E8E86230040F4C2 /* GeneratedPluginRegistrant.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = GeneratedPluginRegistrant.h; sourceTree = "<group>"; };
-		1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = GeneratedPluginRegistrant.m; sourceTree = "<group>"; };
-		3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; name = AppFrameworkInfo.plist; path = Flutter/AppFrameworkInfo.plist; sourceTree = "<group>"; };
-		74858FAD1ED2DC5600515810 /* Runner-Bridging-Header.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = "Runner-Bridging-Header.h"; sourceTree = "<group>"; };
-		74858FAE1ED2DC5600515810 /* AppDelegate.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = AppDelegate.swift; sourceTree = "<group>"; };
-		7AFA3C8E1D35360C0083082E /* Release.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; name = Release.xcconfig; path = Flutter/Release.xcconfig; sourceTree = "<group>"; };
-		9740EEB21CF90195004384FC /* Debug.xcconfig */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.xcconfig; name = Debug.xcconfig; path = Flutter/Debug.xcconfig; sourceTree = "<group>"; };
-		9740EEB31CF90195004384FC /* Generated.xcconfig */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.xcconfig; name = Generated.xcconfig; path = Flutter/Generated.xcconfig; sourceTree = "<group>"; };
-		97C146EE1CF9000F007C117D /* Runner.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = Runner.app; sourceTree = BUILT_PRODUCTS_DIR; };
-		97C146FB1CF9000F007C117D /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.storyboard; name = Base; path = Base.lproj/Main.storyboard; sourceTree = "<group>"; };
-		97C146FD1CF9000F007C117D /* Assets.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = Assets.xcassets; sourceTree = "<group>"; };
-		97C147001CF9000F007C117D /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.storyboard; name = Base; path = Base.lproj/LaunchScreen.storyboard; sourceTree = "<group>"; };
-		97C147021CF9000F007C117D /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
-/* End PBXFileReference section */
-
-/* Begin PBXFrameworksBuildPhase section */
-		97C146EB1CF9000F007C117D /* Frameworks */ = {
-			isa = PBXFrameworksBuildPhase;
-			buildActionMask = 2147483647;
-			files = (
-			);
-			runOnlyForDeploymentPostprocessing = 0;
-		};
-/* End PBXFrameworksBuildPhase section */
-
-/* Begin PBXGroup section */
-		9740EEB11CF90186004384FC /* Flutter */ = {
-			isa = PBXGroup;
-			children = (
-				3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */,
-				9740EEB21CF90195004384FC /* Debug.xcconfig */,
-				7AFA3C8E1D35360C0083082E /* Release.xcconfig */,
-				9740EEB31CF90195004384FC /* Generated.xcconfig */,
-			);
-			name = Flutter;
-			sourceTree = "<group>";
-		};
-		97C146E51CF9000F007C117D = {
-			isa = PBXGroup;
-			children = (
-				9740EEB11CF90186004384FC /* Flutter */,
-				97C146F01CF9000F007C117D /* Runner */,
-				97C146EF1CF9000F007C117D /* Products */,
-			);
-			sourceTree = "<group>";
-		};
-		97C146EF1CF9000F007C117D /* Products */ = {
-			isa = PBXGroup;
-			children = (
-				97C146EE1CF9000F007C117D /* Runner.app */,
-			);
-			name = Products;
-			sourceTree = "<group>";
-		};
-		97C146F01CF9000F007C117D /* Runner */ = {
-			isa = PBXGroup;
-			children = (
-				97C146FA1CF9000F007C117D /* Main.storyboard */,
-				97C146FD1CF9000F007C117D /* Assets.xcassets */,
-				97C146FF1CF9000F007C117D /* LaunchScreen.storyboard */,
-				97C147021CF9000F007C117D /* Info.plist */,
-				1498D2321E8E86230040F4C2 /* GeneratedPluginRegistrant.h */,
-				1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */,
-				74858FAE1ED2DC5600515810 /* AppDelegate.swift */,
-				74858FAD1ED2DC5600515810 /* Runner-Bridging-Header.h */,
-			);
-			path = Runner;
-			sourceTree = "<group>";
-		};
-/* End PBXGroup section */
-
-/* Begin PBXNativeTarget section */
-		97C146ED1CF9000F007C117D /* Runner */ = {
-			isa = PBXNativeTarget;
-			buildConfigurationList = 97C147051CF9000F007C117D /* Build configuration list for PBXNativeTarget "Runner" */;
-			buildPhases = (
-				9740EEB61CF901F6004384FC /* Run Script */,
-				97C146EA1CF9000F007C117D /* Sources */,
-				97C146EB1CF9000F007C117D /* Frameworks */,
-				97C146EC1CF9000F007C117D /* Resources */,
-				9705A1C41CF9048500538489 /* Embed Frameworks */,
-				3B06AD1E1E4923F5004D2608 /* Thin Binary */,
-			);
-			buildRules = (
-			);
-			dependencies = (
-			);
-			name = Runner;
-			productName = Runner;
-			productReference = 97C146EE1CF9000F007C117D /* Runner.app */;
-			productType = "com.apple.product-type.application";
-		};
-/* End PBXNativeTarget section */
-
-/* Begin PBXProject section */
-		97C146E61CF9000F007C117D /* Project object */ = {
-			isa = PBXProject;
-			attributes = {
-				LastUpgradeCheck = 1020;
-				ORGANIZATIONNAME = "";
-				TargetAttributes = {
-					97C146ED1CF9000F007C117D = {
-						CreatedOnToolsVersion = 7.3.1;
-						LastSwiftMigration = 1100;
-					};
-				};
-			};
-			buildConfigurationList = 97C146E91CF9000F007C117D /* Build configuration list for PBXProject "Runner" */;
-			compatibilityVersion = "Xcode 9.3";
-			developmentRegion = en;
-			hasScannedForEncodings = 0;
-			knownRegions = (
-				en,
-				Base,
-			);
-			mainGroup = 97C146E51CF9000F007C117D;
-			productRefGroup = 97C146EF1CF9000F007C117D /* Products */;
-			projectDirPath = "";
-			projectRoot = "";
-			targets = (
-				97C146ED1CF9000F007C117D /* Runner */,
-			);
-		};
-/* End PBXProject section */
-
-/* Begin PBXResourcesBuildPhase section */
-		97C146EC1CF9000F007C117D /* Resources */ = {
-			isa = PBXResourcesBuildPhase;
-			buildActionMask = 2147483647;
-			files = (
-				97C147011CF9000F007C117D /* LaunchScreen.storyboard in Resources */,
-				3B3967161E833CAA004F5970 /* AppFrameworkInfo.plist in Resources */,
-				97C146FE1CF9000F007C117D /* Assets.xcassets in Resources */,
-				97C146FC1CF9000F007C117D /* Main.storyboard in Resources */,
-			);
-			runOnlyForDeploymentPostprocessing = 0;
-		};
-/* End PBXResourcesBuildPhase section */
-
-/* Begin PBXShellScriptBuildPhase section */
-		3B06AD1E1E4923F5004D2608 /* Thin Binary */ = {
-			isa = PBXShellScriptBuildPhase;
-			buildActionMask = 2147483647;
-			files = (
-			);
-			inputPaths = (
-			);
-			name = "Thin Binary";
-			outputPaths = (
-			);
-			runOnlyForDeploymentPostprocessing = 0;
-			shellPath = /bin/sh;
-			shellScript = "/bin/sh \"$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh\" embed_and_thin";
-		};
-		9740EEB61CF901F6004384FC /* Run Script */ = {
-			isa = PBXShellScriptBuildPhase;
-			buildActionMask = 2147483647;
-			files = (
-			);
-			inputPaths = (
-			);
-			name = "Run Script";
-			outputPaths = (
-			);
-			runOnlyForDeploymentPostprocessing = 0;
-			shellPath = /bin/sh;
-			shellScript = "/bin/sh \"$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh\" build";
-		};
-/* End PBXShellScriptBuildPhase section */
-
-/* Begin PBXSourcesBuildPhase section */
-		97C146EA1CF9000F007C117D /* Sources */ = {
-			isa = PBXSourcesBuildPhase;
-			buildActionMask = 2147483647;
-			files = (
-				74858FAF1ED2DC5600515810 /* AppDelegate.swift in Sources */,
-				1498D2341E8E89220040F4C2 /* GeneratedPluginRegistrant.m in Sources */,
-			);
-			runOnlyForDeploymentPostprocessing = 0;
-		};
-/* End PBXSourcesBuildPhase section */
-
-/* Begin PBXVariantGroup section */
-		97C146FA1CF9000F007C117D /* Main.storyboard */ = {
-			isa = PBXVariantGroup;
-			children = (
-				97C146FB1CF9000F007C117D /* Base */,
-			);
-			name = Main.storyboard;
-			sourceTree = "<group>";
-		};
-		97C146FF1CF9000F007C117D /* LaunchScreen.storyboard */ = {
-			isa = PBXVariantGroup;
-			children = (
-				97C147001CF9000F007C117D /* Base */,
-			);
-			name = LaunchScreen.storyboard;
-			sourceTree = "<group>";
-		};
-/* End PBXVariantGroup section */
-
-/* Begin XCBuildConfiguration section */
-		249021D3217E4FDB00AE95B9 /* Profile */ = {
-			isa = XCBuildConfiguration;
-			buildSettings = {
-				ALWAYS_SEARCH_USER_PATHS = NO;
-				CLANG_ANALYZER_NONNULL = YES;
-				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
-				CLANG_CXX_LIBRARY = "libc++";
-				CLANG_ENABLE_MODULES = YES;
-				CLANG_ENABLE_OBJC_ARC = YES;
-				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
-				CLANG_WARN_BOOL_CONVERSION = YES;
-				CLANG_WARN_COMMA = YES;
-				CLANG_WARN_CONSTANT_CONVERSION = YES;
-				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
-				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
-				CLANG_WARN_EMPTY_BODY = YES;
-				CLANG_WARN_ENUM_CONVERSION = YES;
-				CLANG_WARN_INFINITE_RECURSION = YES;
-				CLANG_WARN_INT_CONVERSION = YES;
-				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
-				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
-				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
-				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
-				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
-				CLANG_WARN_STRICT_PROTOTYPES = YES;
-				CLANG_WARN_SUSPICIOUS_MOVE = YES;
-				CLANG_WARN_UNREACHABLE_CODE = YES;
-				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
-				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
-				COPY_PHASE_STRIP = NO;
-				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
-				ENABLE_NS_ASSERTIONS = NO;
-				ENABLE_STRICT_OBJC_MSGSEND = YES;
-				GCC_C_LANGUAGE_STANDARD = gnu99;
-				GCC_NO_COMMON_BLOCKS = YES;
-				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
-				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
-				GCC_WARN_UNDECLARED_SELECTOR = YES;
-				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
-				GCC_WARN_UNUSED_FUNCTION = YES;
-				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
-				MTL_ENABLE_DEBUG_INFO = NO;
-				SDKROOT = iphoneos;
-				SUPPORTED_PLATFORMS = iphoneos;
-				TARGETED_DEVICE_FAMILY = "1,2";
-				VALIDATE_PRODUCT = YES;
-			};
-			name = Profile;
-		};
-		249021D4217E4FDB00AE95B9 /* Profile */ = {
-			isa = XCBuildConfiguration;
-			baseConfigurationReference = 7AFA3C8E1D35360C0083082E /* Release.xcconfig */;
-			buildSettings = {
-				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
-				CLANG_ENABLE_MODULES = YES;
-				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
-				ENABLE_BITCODE = NO;
-				FRAMEWORK_SEARCH_PATHS = (
-					"$(inherited)",
-					"$(PROJECT_DIR)/Flutter",
-				);
-				INFOPLIST_FILE = Runner/Info.plist;
-				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
-				LIBRARY_SEARCH_PATHS = (
-					"$(inherited)",
-					"$(PROJECT_DIR)/Flutter",
-				);
-				PRODUCT_BUNDLE_IDENTIFIER = com.example.android;
-				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
-				SWIFT_VERSION = 5.0;
-				VERSIONING_SYSTEM = "apple-generic";
-			};
-			name = Profile;
-		};
-		97C147031CF9000F007C117D /* Debug */ = {
-			isa = XCBuildConfiguration;
-			buildSettings = {
-				ALWAYS_SEARCH_USER_PATHS = NO;
-				CLANG_ANALYZER_NONNULL = YES;
-				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
-				CLANG_CXX_LIBRARY = "libc++";
-				CLANG_ENABLE_MODULES = YES;
-				CLANG_ENABLE_OBJC_ARC = YES;
-				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
-				CLANG_WARN_BOOL_CONVERSION = YES;
-				CLANG_WARN_COMMA = YES;
-				CLANG_WARN_CONSTANT_CONVERSION = YES;
-				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
-				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
-				CLANG_WARN_EMPTY_BODY = YES;
-				CLANG_WARN_ENUM_CONVERSION = YES;
-				CLANG_WARN_INFINITE_RECURSION = YES;
-				CLANG_WARN_INT_CONVERSION = YES;
-				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
-				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
-				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
-				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
-				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
-				CLANG_WARN_STRICT_PROTOTYPES = YES;
-				CLANG_WARN_SUSPICIOUS_MOVE = YES;
-				CLANG_WARN_UNREACHABLE_CODE = YES;
-				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
-				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
-				COPY_PHASE_STRIP = NO;
-				DEBUG_INFORMATION_FORMAT = dwarf;
-				ENABLE_STRICT_OBJC_MSGSEND = YES;
-				ENABLE_TESTABILITY = YES;
-				GCC_C_LANGUAGE_STANDARD = gnu99;
-				GCC_DYNAMIC_NO_PIC = NO;
-				GCC_NO_COMMON_BLOCKS = YES;
-				GCC_OPTIMIZATION_LEVEL = 0;
-				GCC_PREPROCESSOR_DEFINITIONS = (
-					"DEBUG=1",
-					"$(inherited)",
-				);
-				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
-				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
-				GCC_WARN_UNDECLARED_SELECTOR = YES;
-				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
-				GCC_WARN_UNUSED_FUNCTION = YES;
-				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
-				MTL_ENABLE_DEBUG_INFO = YES;
-				ONLY_ACTIVE_ARCH = YES;
-				SDKROOT = iphoneos;
-				TARGETED_DEVICE_FAMILY = "1,2";
-			};
-			name = Debug;
-		};
-		97C147041CF9000F007C117D /* Release */ = {
-			isa = XCBuildConfiguration;
-			buildSettings = {
-				ALWAYS_SEARCH_USER_PATHS = NO;
-				CLANG_ANALYZER_NONNULL = YES;
-				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
-				CLANG_CXX_LIBRARY = "libc++";
-				CLANG_ENABLE_MODULES = YES;
-				CLANG_ENABLE_OBJC_ARC = YES;
-				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
-				CLANG_WARN_BOOL_CONVERSION = YES;
-				CLANG_WARN_COMMA = YES;
-				CLANG_WARN_CONSTANT_CONVERSION = YES;
-				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
-				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
-				CLANG_WARN_EMPTY_BODY = YES;
-				CLANG_WARN_ENUM_CONVERSION = YES;
-				CLANG_WARN_INFINITE_RECURSION = YES;
-				CLANG_WARN_INT_CONVERSION = YES;
-				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
-				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
-				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
-				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
-				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
-				CLANG_WARN_STRICT_PROTOTYPES = YES;
-				CLANG_WARN_SUSPICIOUS_MOVE = YES;
-				CLANG_WARN_UNREACHABLE_CODE = YES;
-				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
-				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
-				COPY_PHASE_STRIP = NO;
-				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
-				ENABLE_NS_ASSERTIONS = NO;
-				ENABLE_STRICT_OBJC_MSGSEND = YES;
-				GCC_C_LANGUAGE_STANDARD = gnu99;
-				GCC_NO_COMMON_BLOCKS = YES;
-				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
-				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
-				GCC_WARN_UNDECLARED_SELECTOR = YES;
-				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
-				GCC_WARN_UNUSED_FUNCTION = YES;
-				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
-				MTL_ENABLE_DEBUG_INFO = NO;
-				SDKROOT = iphoneos;
-				SUPPORTED_PLATFORMS = iphoneos;
-				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				TARGETED_DEVICE_FAMILY = "1,2";
-				VALIDATE_PRODUCT = YES;
-			};
-			name = Release;
-		};
-		97C147061CF9000F007C117D /* Debug */ = {
-			isa = XCBuildConfiguration;
-			baseConfigurationReference = 9740EEB21CF90195004384FC /* Debug.xcconfig */;
-			buildSettings = {
-				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
-				CLANG_ENABLE_MODULES = YES;
-				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
-				ENABLE_BITCODE = NO;
-				FRAMEWORK_SEARCH_PATHS = (
-					"$(inherited)",
-					"$(PROJECT_DIR)/Flutter",
-				);
-				INFOPLIST_FILE = Runner/Info.plist;
-				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
-				LIBRARY_SEARCH_PATHS = (
-					"$(inherited)",
-					"$(PROJECT_DIR)/Flutter",
-				);
-				PRODUCT_BUNDLE_IDENTIFIER = com.example.android;
-				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
-				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 5.0;
-				VERSIONING_SYSTEM = "apple-generic";
-			};
-			name = Debug;
-		};
-		97C147071CF9000F007C117D /* Release */ = {
-			isa = XCBuildConfiguration;
-			baseConfigurationReference = 7AFA3C8E1D35360C0083082E /* Release.xcconfig */;
-			buildSettings = {
-				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
-				CLANG_ENABLE_MODULES = YES;
-				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
-				ENABLE_BITCODE = NO;
-				FRAMEWORK_SEARCH_PATHS = (
-					"$(inherited)",
-					"$(PROJECT_DIR)/Flutter",
-				);
-				INFOPLIST_FILE = Runner/Info.plist;
-				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
-				LIBRARY_SEARCH_PATHS = (
-					"$(inherited)",
-					"$(PROJECT_DIR)/Flutter",
-				);
-				PRODUCT_BUNDLE_IDENTIFIER = com.example.android;
-				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
-				SWIFT_VERSION = 5.0;
-				VERSIONING_SYSTEM = "apple-generic";
-			};
-			name = Release;
-		};
-/* End XCBuildConfiguration section */
-
-/* Begin XCConfigurationList section */
-		97C146E91CF9000F007C117D /* Build configuration list for PBXProject "Runner" */ = {
-			isa = XCConfigurationList;
-			buildConfigurations = (
-				97C147031CF9000F007C117D /* Debug */,
-				97C147041CF9000F007C117D /* Release */,
-				249021D3217E4FDB00AE95B9 /* Profile */,
-			);
-			defaultConfigurationIsVisible = 0;
-			defaultConfigurationName = Release;
-		};
-		97C147051CF9000F007C117D /* Build configuration list for PBXNativeTarget "Runner" */ = {
-			isa = XCConfigurationList;
-			buildConfigurations = (
-				97C147061CF9000F007C117D /* Debug */,
-				97C147071CF9000F007C117D /* Release */,
-				249021D4217E4FDB00AE95B9 /* Profile */,
-			);
-			defaultConfigurationIsVisible = 0;
-			defaultConfigurationName = Release;
-		};
-/* End XCConfigurationList section */
-	};
-	rootObject = 97C146E61CF9000F007C117D /* Project object */;
-}
--- a/using_snackbar/android/ios/Runner.xcodeproj/project.xcworkspace/contents.xcworkspacedata
+++ b/using_snackbar/android/ios/Runner.xcodeproj/project.xcworkspace/contents.xcworkspacedata
@@ -1,7 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<Workspace
-   version = "1.0">
-   <FileRef
-      location = "group:Runner.xcodeproj">
-   </FileRef>
-</Workspace>
--- a/using_snackbar/android/ios/Runner.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
+++ b/using_snackbar/android/ios/Runner.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>IDEDidComputeMac32BitWarning</key>
-	<true/>
-</dict>
-</plist>
--- a/using_snackbar/android/ios/Runner.xcodeproj/project.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings
+++ b/using_snackbar/android/ios/Runner.xcodeproj/project.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings
@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>PreviewsEnabled</key>
-	<false/>
-</dict>
-</plist>
--- a/using_snackbar/android/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme
+++ b/using_snackbar/android/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme
@@ -1,91 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<Scheme
-   LastUpgradeVersion = "1020"
-   version = "1.3">
-   <BuildAction
-      parallelizeBuildables = "YES"
-      buildImplicitDependencies = "YES">
-      <BuildActionEntries>
-         <BuildActionEntry
-            buildForTesting = "YES"
-            buildForRunning = "YES"
-            buildForProfiling = "YES"
-            buildForArchiving = "YES"
-            buildForAnalyzing = "YES">
-            <BuildableReference
-               BuildableIdentifier = "primary"
-               BlueprintIdentifier = "97C146ED1CF9000F007C117D"
-               BuildableName = "Runner.app"
-               BlueprintName = "Runner"
-               ReferencedContainer = "container:Runner.xcodeproj">
-            </BuildableReference>
-         </BuildActionEntry>
-      </BuildActionEntries>
-   </BuildAction>
-   <TestAction
-      buildConfiguration = "Debug"
-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      shouldUseLaunchSchemeArgsEnv = "YES">
-      <Testables>
-      </Testables>
-      <MacroExpansion>
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
-            BuildableName = "Runner.app"
-            BlueprintName = "Runner"
-            ReferencedContainer = "container:Runner.xcodeproj">
-         </BuildableReference>
-      </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
-   </TestAction>
-   <LaunchAction
-      buildConfiguration = "Debug"
-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      launchStyle = "0"
-      useCustomWorkingDirectory = "NO"
-      ignoresPersistentStateOnLaunch = "NO"
-      debugDocumentVersioning = "YES"
-      debugServiceExtension = "internal"
-      allowLocationSimulation = "YES">
-      <BuildableProductRunnable
-         runnableDebuggingMode = "0">
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
-            BuildableName = "Runner.app"
-            BlueprintName = "Runner"
-            ReferencedContainer = "container:Runner.xcodeproj">
-         </BuildableReference>
-      </BuildableProductRunnable>
-      <AdditionalOptions>
-      </AdditionalOptions>
-   </LaunchAction>
-   <ProfileAction
-      buildConfiguration = "Profile"
-      shouldUseLaunchSchemeArgsEnv = "YES"
-      savedToolIdentifier = ""
-      useCustomWorkingDirectory = "NO"
-      debugDocumentVersioning = "YES">
-      <BuildableProductRunnable
-         runnableDebuggingMode = "0">
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
-            BuildableName = "Runner.app"
-            BlueprintName = "Runner"
-            ReferencedContainer = "container:Runner.xcodeproj">
-         </BuildableReference>
-      </BuildableProductRunnable>
-   </ProfileAction>
-   <AnalyzeAction
-      buildConfiguration = "Debug">
-   </AnalyzeAction>
-   <ArchiveAction
-      buildConfiguration = "Release"
-      revealArchiveInOrganizer = "YES">
-   </ArchiveAction>
-</Scheme>
--- a/using_snackbar/android/ios/Runner.xcworkspace/contents.xcworkspacedata
+++ b/using_snackbar/android/ios/Runner.xcworkspace/contents.xcworkspacedata
@@ -1,7 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<Workspace
-   version = "1.0">
-   <FileRef
-      location = "group:Runner.xcodeproj">
-   </FileRef>
-</Workspace>
--- a/using_snackbar/android/ios/Runner.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
+++ b/using_snackbar/android/ios/Runner.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>IDEDidComputeMac32BitWarning</key>
-	<true/>
-</dict>
-</plist>
--- a/using_snackbar/android/ios/Runner.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings
+++ b/using_snackbar/android/ios/Runner.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings
@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>PreviewsEnabled</key>
-	<false/>
-</dict>
-</plist>
--- a/using_snackbar/android/ios/Runner/AppDelegate.swift
+++ b/using_snackbar/android/ios/Runner/AppDelegate.swift
@@ -1,13 +0,0 @@
-import UIKit
-import Flutter
-
-@UIApplicationMain
-@objc class AppDelegate: FlutterAppDelegate {
-  override func application(
-    _ application: UIApplication,
-    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
-  ) -> Bool {
-    GeneratedPluginRegistrant.register(with: self)
-    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
-  }
-}
--- a/using_snackbar/android/ios/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json
+++ b/using_snackbar/android/ios/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json
@@ -1,122 +0,0 @@
-{
-  "images" : [
-    {
-      "size" : "20x20",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-20x20@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "20x20",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-20x20@3x.png",
-      "scale" : "3x"
-    },
-    {
-      "size" : "29x29",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-29x29@1x.png",
-      "scale" : "1x"
-    },
-    {
-      "size" : "29x29",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-29x29@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "29x29",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-29x29@3x.png",
-      "scale" : "3x"
-    },
-    {
-      "size" : "40x40",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-40x40@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "40x40",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-40x40@3x.png",
-      "scale" : "3x"
-    },
-    {
-      "size" : "60x60",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-60x60@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "60x60",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-60x60@3x.png",
-      "scale" : "3x"
-    },
-    {
-      "size" : "20x20",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-20x20@1x.png",
-      "scale" : "1x"
-    },
-    {
-      "size" : "20x20",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-20x20@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "29x29",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-29x29@1x.png",
-      "scale" : "1x"
-    },
-    {
-      "size" : "29x29",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-29x29@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "40x40",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-40x40@1x.png",
-      "scale" : "1x"
-    },
-    {
-      "size" : "40x40",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-40x40@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "76x76",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-76x76@1x.png",
-      "scale" : "1x"
-    },
-    {
-      "size" : "76x76",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-76x76@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "83.5x83.5",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-83.5x83.5@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "1024x1024",
-      "idiom" : "ios-marketing",
-      "filename" : "Icon-App-1024x1024@1x.png",
-      "scale" : "1x"
-    }
-  ],
-  "info" : {
-    "version" : 1,
-    "author" : "xcode"
-  }
-}
--- a/using_snackbar/android/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-1024x1024@1x.png
+++ b/using_snackbar/android/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-1024x1024@1x.png
--- a/using_snackbar/android/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@1x.png
+++ b/using_snackbar/android/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@1x.png
--- a/using_snackbar/android/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@2x.png
+++ b/using_snackbar/android/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@2x.png
--- a/using_snackbar/android/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@3x.png
+++ b/using_snackbar/android/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@3x.png
--- a/using_snackbar/android/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@1x.png
+++ b/using_snackbar/android/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@1x.png
--- a/using_snackbar/android/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@2x.png
+++ b/using_snackbar/android/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@2x.png
--- a/using_snackbar/android/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@3x.png
+++ b/using_snackbar/android/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@3x.png
--- a/using_snackbar/android/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@1x.png
+++ b/using_snackbar/android/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@1x.png
--- a/using_snackbar/android/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@2x.png
+++ b/using_snackbar/android/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@2x.png
--- a/using_snackbar/android/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@3x.png
+++ b/using_snackbar/android/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@3x.png
--- a/using_snackbar/android/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@2x.png
+++ b/using_snackbar/android/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@2x.png
--- a/using_snackbar/android/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@3x.png
+++ b/using_snackbar/android/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@3x.png
--- a/using_snackbar/android/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@1x.png
+++ b/using_snackbar/android/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@1x.png
--- a/using_snackbar/android/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@2x.png
+++ b/using_snackbar/android/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@2x.png
--- a/using_snackbar/android/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-83.5x83.5@2x.png
+++ b/using_snackbar/android/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-83.5x83.5@2x.png
--- a/using_snackbar/android/ios/Runner/Assets.xcassets/LaunchImage.imageset/Contents.json
+++ b/using_snackbar/android/ios/Runner/Assets.xcassets/LaunchImage.imageset/Contents.json
@@ -1,23 +0,0 @@
-{
-  "images" : [
-    {
-      "idiom" : "universal",
-      "filename" : "LaunchImage.png",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "universal",
-      "filename" : "LaunchImage@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "universal",
-      "filename" : "LaunchImage@3x.png",
-      "scale" : "3x"
-    }
-  ],
-  "info" : {
-    "version" : 1,
-    "author" : "xcode"
-  }
-}
--- a/using_snackbar/android/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage.png
+++ b/using_snackbar/android/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage.png
--- a/using_snackbar/android/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@2x.png
+++ b/using_snackbar/android/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@2x.png
--- a/using_snackbar/android/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@3x.png
+++ b/using_snackbar/android/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@3x.png
--- a/using_snackbar/android/ios/Runner/Assets.xcassets/LaunchImage.imageset/README.md
+++ b/using_snackbar/android/ios/Runner/Assets.xcassets/LaunchImage.imageset/README.md
@@ -1,5 +0,0 @@
-# Launch Screen Assets
-
-You can customize the launch screen with your own desired assets by replacing the image files in this directory.
-
-You can also do it by opening your Flutter project's Xcode project with `open ios/Runner.xcworkspace`, selecting `Runner/Assets.xcassets` in the Project Navigator and dropping in the desired images.
--- a/using_snackbar/android/ios/Runner/Base.lproj/LaunchScreen.storyboard
+++ b/using_snackbar/android/ios/Runner/Base.lproj/LaunchScreen.storyboard
@@ -1,37 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="12121" systemVersion="16G29" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
-    <dependencies>
-        <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="12089"/>
-    </dependencies>
-    <scenes>
-        <!--View Controller-->
-        <scene sceneID="EHf-IW-A2E">
-            <objects>
-                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
-                    <layoutGuides>
-                        <viewControllerLayoutGuide type="top" id="Ydg-fD-yQy"/>
-                        <viewControllerLayoutGuide type="bottom" id="xbc-2k-c8Z"/>
-                    </layoutGuides>
-                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
-                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                        <subviews>
-                            <imageView opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" image="LaunchImage" translatesAutoresizingMaskIntoConstraints="NO" id="YRO-k0-Ey4">
-                            </imageView>
-                        </subviews>
-                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
-                        <constraints>
-                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="centerX" secondItem="Ze5-6b-2t3" secondAttribute="centerX" id="1a2-6s-vTC"/>
-                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="centerY" secondItem="Ze5-6b-2t3" secondAttribute="centerY" id="4X2-HB-R7a"/>
-                        </constraints>
-                    </view>
-                </viewController>
-                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
-            </objects>
-            <point key="canvasLocation" x="53" y="375"/>
-        </scene>
-    </scenes>
-    <resources>
-        <image name="LaunchImage" width="168" height="185"/>
-    </resources>
-</document>
--- a/using_snackbar/android/ios/Runner/Base.lproj/Main.storyboard
+++ b/using_snackbar/android/ios/Runner/Base.lproj/Main.storyboard
@@ -1,26 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="10117" systemVersion="15F34" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="BYZ-38-t0r">
-    <dependencies>
-        <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="10085"/>
-    </dependencies>
-    <scenes>
-        <!--Flutter View Controller-->
-        <scene sceneID="tne-QT-ifu">
-            <objects>
-                <viewController id="BYZ-38-t0r" customClass="FlutterViewController" sceneMemberID="viewController">
-                    <layoutGuides>
-                        <viewControllerLayoutGuide type="top" id="y3c-jy-aDJ"/>
-                        <viewControllerLayoutGuide type="bottom" id="wfy-db-euE"/>
-                    </layoutGuides>
-                    <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
-                        <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
-                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
-                    </view>
-                </viewController>
-                <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
-            </objects>
-        </scene>
-    </scenes>
-</document>
--- a/using_snackbar/android/ios/Runner/Info.plist
+++ b/using_snackbar/android/ios/Runner/Info.plist
@@ -1,45 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>CFBundleDevelopmentRegion</key>
-	<string>$(DEVELOPMENT_LANGUAGE)</string>
-	<key>CFBundleExecutable</key>
-	<string>$(EXECUTABLE_NAME)</string>
-	<key>CFBundleIdentifier</key>
-	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
-	<key>CFBundleInfoDictionaryVersion</key>
-	<string>6.0</string>
-	<key>CFBundleName</key>
-	<string>android</string>
-	<key>CFBundlePackageType</key>
-	<string>APPL</string>
-	<key>CFBundleShortVersionString</key>
-	<string>$(FLUTTER_BUILD_NAME)</string>
-	<key>CFBundleSignature</key>
-	<string>????</string>
-	<key>CFBundleVersion</key>
-	<string>$(FLUTTER_BUILD_NUMBER)</string>
-	<key>LSRequiresIPhoneOS</key>
-	<true/>
-	<key>UILaunchStoryboardName</key>
-	<string>LaunchScreen</string>
-	<key>UIMainStoryboardFile</key>
-	<string>Main</string>
-	<key>UISupportedInterfaceOrientations</key>
-	<array>
-		<string>UIInterfaceOrientationPortrait</string>
-		<string>UIInterfaceOrientationLandscapeLeft</string>
-		<string>UIInterfaceOrientationLandscapeRight</string>
-	</array>
-	<key>UISupportedInterfaceOrientations~ipad</key>
-	<array>
-		<string>UIInterfaceOrientationPortrait</string>
-		<string>UIInterfaceOrientationPortraitUpsideDown</string>
-		<string>UIInterfaceOrientationLandscapeLeft</string>
-		<string>UIInterfaceOrientationLandscapeRight</string>
-	</array>
-	<key>UIViewControllerBasedStatusBarAppearance</key>
-	<false/>
-</dict>
-</plist>
--- a/using_snackbar/android/ios/Runner/Runner-Bridging-Header.h
+++ b/using_snackbar/android/ios/Runner/Runner-Bridging-Header.h
@@ -1 +0,0 @@
-#import "GeneratedPluginRegistrant.h"
--- a/using_snackbar/android/lib/main.dart
+++ b/using_snackbar/android/lib/main.dart
@@ -1,117 +0,0 @@
-import 'package:flutter/material.dart';
-
-void main() {
-  runApp(MyApp());
-}
-
-class MyApp extends StatelessWidget {
-  // This widget is the root of your application.
-  @override
-  Widget build(BuildContext context) {
-    return MaterialApp(
-      title: 'Flutter Demo',
-      theme: ThemeData(
-        // This is the theme of your application.
-        //
-        // Try running your application with "flutter run". You'll see the
-        // application has a blue toolbar. Then, without quitting the app, try
-        // changing the primarySwatch below to Colors.green and then invoke
-        // "hot reload" (press "r" in the console where you ran "flutter run",
-        // or simply save your changes to "hot reload" in a Flutter IDE).
-        // Notice that the counter didn't reset back to zero; the application
-        // is not restarted.
-        primarySwatch: Colors.blue,
-        // This makes the visual density adapt to the platform that you run
-        // the app on. For desktop platforms, the controls will be smaller and
-        // closer together (more dense) than on mobile platforms.
-        visualDensity: VisualDensity.adaptivePlatformDensity,
-      ),
-      home: MyHomePage(title: 'Flutter Demo Home Page'),
-    );
-  }
-}
-
-class MyHomePage extends StatefulWidget {
-  MyHomePage({Key key, this.title}) : super(key: key);
-
-  // This widget is the home page of your application. It is stateful, meaning
-  // that it has a State object (defined below) that contains fields that affect
-  // how it looks.
-
-  // This class is the configuration for the state. It holds the values (in this
-  // case the title) provided by the parent (in this case the App widget) and
-  // used by the build method of the State. Fields in a Widget subclass are
-  // always marked "final".
-
-  final String title;
-
-  @override
-  _MyHomePageState createState() => _MyHomePageState();
-}
-
-class _MyHomePageState extends State<MyHomePage> {
-  int _counter = 0;
-
-  void _incrementCounter() {
-    setState(() {
-      // This call to setState tells the Flutter framework that something has
-      // changed in this State, which causes it to rerun the build method below
-      // so that the display can reflect the updated values. If we changed
-      // _counter without calling setState(), then the build method would not be
-      // called again, and so nothing would appear to happen.
-      _counter++;
-    });
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    // This method is rerun every time setState is called, for instance as done
-    // by the _incrementCounter method above.
-    //
-    // The Flutter framework has been optimized to make rerunning build methods
-    // fast, so that you can just rebuild anything that needs updating rather
-    // than having to individually change instances of widgets.
-    return Scaffold(
-      appBar: AppBar(
-        // Here we take the value from the MyHomePage object that was created by
-        // the App.build method, and use it to set our appbar title.
-        title: Text(widget.title),
-      ),
-      body: Center(
-        // Center is a layout widget. It takes a single child and positions it
-        // in the middle of the parent.
-        child: Column(
-          // Column is also a layout widget. It takes a list of children and
-          // arranges them vertically. By default, it sizes itself to fit its
-          // children horizontally, and tries to be as tall as its parent.
-          //
-          // Invoke "debug painting" (press "p" in the console, choose the
-          // "Toggle Debug Paint" action from the Flutter Inspector in Android
-          // Studio, or the "Toggle Debug Paint" command in Visual Studio Code)
-          // to see the wireframe for each widget.
-          //
-          // Column has various properties to control how it sizes itself and
-          // how it positions its children. Here we use mainAxisAlignment to
-          // center the children vertically; the main axis here is the vertical
-          // axis because Columns are vertical (the cross axis would be
-          // horizontal).
-          mainAxisAlignment: MainAxisAlignment.center,
-          children: <Widget>[
-            Text(
-              'You have pushed the button this many times:',
-            ),
-            Text(
-              '$_counter',
-              style: Theme.of(context).textTheme.headline4,
-            ),
-          ],
-        ),
-      ),
-      floatingActionButton: FloatingActionButton(
-        onPressed: _incrementCounter,
-        tooltip: 'Increment',
-        child: Icon(Icons.add),
-      ), // This trailing comma makes auto-formatting nicer for build methods.
-    );
-  }
-}
--- a/using_snackbar/android/pubspec.yaml
+++ b/using_snackbar/android/pubspec.yaml
@@ -1,76 +0,0 @@
-name: android
-description: A new Flutter project.
-
-# The following line prevents the package from being accidentally published to
-# pub.dev using `pub publish`. This is preferred for private packages.
-publish_to: 'none' # Remove this line if you wish to publish to pub.dev
-
-# The following defines the version and build number for your application.
-# A version number is three numbers separated by dots, like 1.2.43
-# followed by an optional build number separated by a +.
-# Both the version and the builder number may be overridden in flutter
-# build by specifying --build-name and --build-number, respectively.
-# In Android, build-name is used as versionName while build-number used as versionCode.
-# Read more about Android versioning at https://developer.android.com/studio/publish/versioning
-# In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion.
-# Read more about iOS versioning at
-# https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
-version: 1.0.0+1
-
-environment:
-  sdk: ">=2.12.0 <3.0.0"
-
-dependencies:
-  flutter:
-    sdk: flutter
-
-
-  # The following adds the Cupertino Icons font to your application.
-  # Use with the CupertinoIcons class for iOS style icons.
-  cupertino_icons: ^0.1.3
-
-dev_dependencies:
-  flutter_test:
-    sdk: flutter
-
-# For information on the generic Dart part of this file, see the
-# following page: https://dart.dev/tools/pub/pubspec
-
-# The following section is specific to Flutter.
-flutter:
-
-  # The following line ensures that the Material Icons font is
-  # included with your application, so that you can use the icons in
-  # the material Icons class.
-  uses-material-design: true
-
-  # To add assets to your application, add an assets section, like this:
-  # assets:
-  #   - images/a_dot_burr.jpeg
-  #   - images/a_dot_ham.jpeg
-
-  # An image asset can refer to one or more resolution-specific "variants", see
-  # https://flutter.dev/assets-and-images/#resolution-aware.
-
-  # For details regarding adding assets from package dependencies, see
-  # https://flutter.dev/assets-and-images/#from-packages
-
-  # To add custom fonts to your application, add a fonts section here,
-  # in this "flutter" section. Each entry in this list should have a
-  # "family" key with the font family name, and a "fonts" key with a
-  # list giving the asset and other descriptors for the font. For
-  # example:
-  # fonts:
-  #   - family: Schyler
-  #     fonts:
-  #       - asset: fonts/Schyler-Regular.ttf
-  #       - asset: fonts/Schyler-Italic.ttf
-  #         style: italic
-  #   - family: Trajan Pro
-  #     fonts:
-  #       - asset: fonts/TrajanPro.ttf
-  #       - asset: fonts/TrajanPro_Bold.ttf
-  #         weight: 700
-  #
-  # For details regarding fonts from package dependencies,
-  # see https://flutter.dev/custom-fonts/#from-packages
--- a/using_snackbar/android/test/widget_test.dart
+++ b/using_snackbar/android/test/widget_test.dart
@@ -1,30 +0,0 @@
-// This is a basic Flutter widget test.
-//
-// To perform an interaction with a widget in your test, use the WidgetTester
-// utility that Flutter provides. For example, you can send tap and scroll
-// gestures. You can also use WidgetTester to find child widgets in the widget
-// tree, read text, and verify that the values of widget properties are correct.
-
-import 'package:flutter/material.dart';
-import 'package:flutter_test/flutter_test.dart';
-
-import 'package:android/main.dart';
-
-void main() {
-  testWidgets('Counter increments smoke test', (WidgetTester tester) async {
-    // Build our app and trigger a frame.
-    await tester.pumpWidget(MyApp());
-
-    // Verify that our counter starts at 0.
-    expect(find.text('0'), findsOneWidget);
-    expect(find.text('1'), findsNothing);
-
-    // Tap the '+' icon and trigger a frame.
-    await tester.tap(find.byIcon(Icons.add));
-    await tester.pump();
-
-    // Verify that our counter has incremented.
-    expect(find.text('0'), findsNothing);
-    expect(find.text('1'), findsOneWidget);
-  });
-}
--- a/using_snackbar/ios/Flutter/ephemeral/flutter_lldb_helper.py
+++ b/using_snackbar/ios/Flutter/ephemeral/flutter_lldb_helper.py
@@ -0,0 +1,32 @@
+#
+# Generated file, do not edit.
+#
+
+import lldb
+
+def handle_new_rx_page(frame: lldb.SBFrame, bp_loc, extra_args, intern_dict):
+    """Intercept NOTIFY_DEBUGGER_ABOUT_RX_PAGES and touch the pages."""
+    base = frame.register["x0"].GetValueAsAddress()
+    page_len = frame.register["x1"].GetValueAsUnsigned()
+
+    # Note: NOTIFY_DEBUGGER_ABOUT_RX_PAGES will check contents of the
+    # first page to see if handled it correctly. This makes diagnosing
+    # misconfiguration (e.g. missing breakpoint) easier.
+    data = bytearray(page_len)
+    data[0:8] = b'IHELPED!'
+
+    error = lldb.SBError()
+    frame.GetThread().GetProcess().WriteMemory(base, data, error)
+    if not error.Success():
+        print(f'Failed to write into {base}[+{page_len}]', error)
+        return
+
+def __lldb_init_module(debugger: lldb.SBDebugger, _):
+    target = debugger.GetDummyTarget()
+    # Caveat: must use BreakpointCreateByRegEx here and not
+    # BreakpointCreateByName. For some reasons callback function does not
+    # get carried over from dummy target for the later.
+    bp = target.BreakpointCreateByRegex("^NOTIFY_DEBUGGER_ABOUT_RX_PAGES$")
+    bp.SetScriptCallbackFunction('{}.handle_new_rx_page'.format(__name__))
+    bp.SetAutoContinue(True)
+    print("-- LLDB integration loaded --")
--- a/using_snackbar/ios/Flutter/ephemeral/flutter_lldbinit
+++ b/using_snackbar/ios/Flutter/ephemeral/flutter_lldbinit
@@ -0,0 +1,5 @@
+#
+# Generated file, do not edit.
+#
+
+command script import --relative-to-command-file flutter_lldb_helper.py
--- a/using_snackbar/ios/Flutter/ephemeral/flutter_native_integration.env
+++ b/using_snackbar/ios/Flutter/ephemeral/flutter_native_integration.env
@@ -0,0 +1,12 @@
+FLUTTER_ROOT=/opt/homebrew/share/flutter
+FLUTTER_APPLICATION_PATH=/Users/nishantsrivastava/Personal/Workspaces/github/flutter/flutter-examples/using_snackbar
+FLUTTER_FRAMEWORK_SWIFT_PACKAGE_PATH=/Users/nishantsrivastava/Personal/Workspaces/github/flutter/flutter-examples/using_snackbar/ios/Flutter/ephemeral/Packages/.packages/FlutterFramework
+COCOAPODS_PARALLEL_CODE_SIGN=true
+FLUTTER_TARGET=lib/main.dart
+FLUTTER_BUILD_DIR=build
+FLUTTER_BUILD_NAME=1.0.0
+FLUTTER_BUILD_NUMBER=1
+DART_OBFUSCATION=false
+TRACK_WIDGET_CREATION=true
+TREE_SHAKE_ICONS=false
+PACKAGE_CONFIG=.dart_tool/package_config.json
--- a/using_snackbar/lib/main.dart
+++ b/using_snackbar/lib/main.dart
@@ -21,7 +21,7 @@ class ContactPage extends StatelessWidget {
 class MyButton extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
-    return RaisedButton(
+    return ElevatedButton(
      child: Text('Show SnackBar'),
      // On pressing the raised button
      onPressed: () {
--- a/using_snackbar/pubspec.yaml
+++ b/using_snackbar/pubspec.yaml
@@ -2,7 +2,7 @@ name: using_snackbar
 description: Sanck bar implementation in Flutter

 environment:
-  sdk: ">=2.12.0 <3.0.0"
+  sdk: ">=3.0.0 <4.0.0"
  
 dependencies:
  flutter:
@@ -10,7 +10,7 @@ dependencies:

  # The following adds the Cupertino Icons font to your application.
  # Use with the CupertinoIcons class for iOS style icons.
-  cupertino_icons: ^0.1.0
+  cupertino_icons: ^1.0.9

 dev_dependencies:
  flutter_test:
@@ -1 +1 @@
 .3.5
 .47.0