Add android_splash_screen (#903)

Adds a Flutter app designed for devices running at least Android 12 that exemplifies how to implement an animated splash screen with the SplashScreen API.
2025-11-08 13:58:47 +00:00 · 2021-10-18 14:45:11 -07:00
parent b7156523ff
commit fa0b54bb9e
35 changed files with 1046 additions and 0 deletions
--- a/android_splash_screen/lib/main.dart
+++ b/android_splash_screen/lib/main.dart
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * 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
+ *
+ *      http://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.
+ */
+
+import 'package:flutter/material.dart';
+
+Future<void> main() async {
+  runApp(const MyApp());
+}
+
+/* Main widget that contains the Flutter starter app. */
+class MyApp extends StatelessWidget {
+  const MyApp({Key? key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      title: 'Flutter Demo',
+      theme: ThemeData(
+        primarySwatch: Colors.blue,
+      ),
+      home: const MyHomePage(title: 'Flutter Demo Home Page'),
+    );
+  }
+}
+
+class MyHomePage extends StatefulWidget {
+  const MyHomePage({Key? key, required this.title}) : super(key: key);
+
+  final String title;
+
+  @override
+  _MyHomePageState createState() => _MyHomePageState();
+}
+
+class _MyHomePageState extends State<MyHomePage> {
+  int _counter = 0;
+
+  void _incrementCounter() {
+    setState(() {
+      _counter++;
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      body: Center(
+        child: Column(
+          children: <Widget>[
+            const Padding(
+                padding: EdgeInsets.only(top: 42, bottom: 250),
+                child: Align(
+                    alignment: Alignment.topCenter, child: CustomAppBar())),
+            const Text(
+              'You have pushed the button this many times:',
+            ),
+            Text(
+              '$_counter',
+              style: Theme.of(context).textTheme.headline4,
+            ),
+          ],
+        ),
+      ),
+      floatingActionButton: FloatingActionButton(
+        onPressed: _incrementCounter,
+        tooltip: 'Increment',
+        child: const Icon(Icons.add),
+      ),
+    );
+  }
+}
+
+/* A Flutter implementation of the last frame of the splashscreen animation */
+class CustomAppBar extends StatelessWidget {
+  const CustomAppBar({Key? key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    Widget titleSection = Row(
+      children: [
+        Padding(
+          padding: const EdgeInsets.only(left: 12, right: 4),
+          child: ClipRRect(
+            borderRadius: BorderRadius.circular(36.0),
+            child: Image.asset(
+              'images/androidIcon.png',
+              width: 72.0,
+              height: 72.0,
+              fit: BoxFit.fill,
+            ),
+          ),
+        ),
+        const Padding(
+          padding: EdgeInsets.only(top: 3),
+          child: Text("Super Splash Screen Demo",
+              style: TextStyle(color: Colors.black54, fontSize: 24)),
+        ),
+      ],
+    );
+    return titleSection;
+  }
+}