flutter pub update & various fixes (#627)

infinite_list/ios/Runner/AppDelegate.h

@@ -1,6 +0,0 @@
-#import <Flutter/Flutter.h>
-#import <UIKit/UIKit.h>
-
-@interface AppDelegate : FlutterAppDelegate
-
-@end

infinite_list/ios/Runner/AppDelegate.m

@@ -1,13 +0,0 @@
-#import "AppDelegate.h"
-#import "GeneratedPluginRegistrant.h"
-
-@implementation AppDelegate
-
-- (BOOL)application:(UIApplication *)application
-    didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
-  [GeneratedPluginRegistrant registerWithRegistry:self];
-  // Override point for customization after application launch.
-  return [super application:application didFinishLaunchingWithOptions:launchOptions];
-}
-
-@end

infinite_list/ios/Runner/AppDelegate.swift

@@ -0,0 +1,13 @@
+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)
+  }
+}

infinite_list/ios/Runner/Runner-Bridging-Header.h

@@ -0,0 +1 @@
+#import "GeneratedPluginRegistrant.h"

infinite_list/ios/Runner/main.m

@@ -1,9 +0,0 @@
-#import <Flutter/Flutter.h>
-#import <UIKit/UIKit.h>
-#import "AppDelegate.h"
-
-int main(int argc, char* argv[]) {
-  @autoreleasepool {
-    return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
-  }
-}