🎨 Improve code in swift example.

example_swift/lib/main.dart

@@ -16,17 +16,22 @@ class _MyAppState extends State<MyApp> {
   void initState() {
     super.initState();
 
-    FlutterBoost.singleton.registerPageBuilders({
-      'first': (pageName, params, _) => FirstRouteWidget(),
-      'second': (pageName, params, _) => SecondRouteWidget(),
-      'tab': (pageName, params, _) => TabRouteWidget(),
-      'flutterFragment': (pageName, params, _) => FragmentRouteWidget(params),
+    FlutterBoost.singleton.registerPageBuilders(<String, PageBuilder>{
+      'first': (String pageName, Map<String, dynamic> params, String _) =>
+          FirstRouteWidget(),
+      'second': (String pageName, Map<String, dynamic> params, String _) =>
+          SecondRouteWidget(),
+      'tab': (String pageName, Map<String, dynamic> params, String _) =>
+          TabRouteWidget(),
+      'flutterFragment':
+          (String pageName, Map<String, dynamic> params, String _) =>
+              FragmentRouteWidget(params),
 
       ///可以在native层通过 getContainerParams 来传递参数
-      'flutterPage': (pageName, params, _) {
-        print("flutterPage params:$params");
+      'flutterPage': (String pageName, Map<String, dynamic> params, String _) {
+        print('flutterPage params:$params');
 
-        return FlutterRouteWidget();
+        return const FlutterRouteWidget();
       },
     });
   }
@@ -36,10 +41,15 @@ class _MyAppState extends State<MyApp> {
     return MaterialApp(
       title: 'Flutter Boost example',
       builder: FlutterBoost.init(postPush: _onRoutePushed),
-        home: Container());
+      home: Container(),
+    );
   }
 
   void _onRoutePushed(
-      String pageName, String uniqueId, Map params, Route route, Future _) {
-  }
+    String pageName,
+    String uniqueId,
+    Map<String, dynamic> params,
+    Route<dynamic> route,
+    Future<dynamic> _,
+  ) {}
 }

example_swift/lib/simple_page_widgets.dart

@@ -6,15 +6,18 @@ class FirstRouteWidget extends StatelessWidget {
   Widget build(BuildContext context) {
     return Scaffold(
       appBar: AppBar(
-        title: Text('First Route'),
+        title: const Text('First Route'),
       ),
       body: Center(
         child: RaisedButton(
-          child: Text('Open second route'),
+          child: const Text('Open second route'),
           onPressed: () {
-            print("open second page!");
-            FlutterBoost.singleton.open("second").then((Map value) {
-              print("call me when page is finished. did recieve second route result $value");
+            print('open second page!');
+            FlutterBoost.singleton
+                .open('second')
+                .then((Map<String, dynamic> value) {
+              print(
+                  'call me when page is finished. did recieve second route result $value');
             });
           },
         ),
@@ -28,19 +31,21 @@ class SecondRouteWidget extends StatelessWidget {
   Widget build(BuildContext context) {
     return Scaffold(
       appBar: AppBar(
-        title: Text("Second Route"),
+        title: const Text('Second Route'),
       ),
       body: Center(
         child: RaisedButton(
           onPressed: () {
             // Navigate back to first route when tapped.
 
-            BoostContainerSettings settings =
+            final BoostContainerSettings settings =
                 BoostContainer.of(context).settings;
-            FlutterBoost.singleton.close(settings.uniqueId,
-                result: <dynamic,dynamic>{"result": "data from second"});
+            FlutterBoost.singleton.close(
+              settings.uniqueId,
+              result: <String, dynamic>{'result': 'data from second'},
+            );
           },
-          child: Text('Go back with result!'),
+          child: const Text('Go back with result!'),
         ),
       ),
     );
@@ -51,15 +56,13 @@ class TabRouteWidget extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return Scaffold(
-      appBar: AppBar(
-        title: Text("Tab Route"),
-      ),
+      appBar: AppBar(title: const Text('Tab Route')),
       body: Center(
         child: RaisedButton(
           onPressed: () {
-            FlutterBoost.singleton.open("second");
+            FlutterBoost.singleton.open('second');
           },
-          child: Text('Open second route'),
+          child: const Text('Open second route'),
         ),
       ),
     );
@@ -67,15 +70,15 @@ class TabRouteWidget extends StatelessWidget {
 }
 
 class FlutterRouteWidget extends StatelessWidget {
-  final String message;
+  const FlutterRouteWidget({this.message});
 
-  FlutterRouteWidget({this.message});
+  final String message;
 
   @override
   Widget build(BuildContext context) {
     return Scaffold(
       appBar: AppBar(
-        title: Text('flutter_boost_example'),
+        title: const Text('flutter_boost_example'),
       ),
       body: Column(
         crossAxisAlignment: CrossAxisAlignment.start,
@@ -83,7 +86,7 @@ class FlutterRouteWidget extends StatelessWidget {
           Container(
             margin: const EdgeInsets.only(top: 80.0),
             child: Text(
-              message ?? "This is a flutter activity",
+              message ?? 'This is a flutter activity',
               style: TextStyle(fontSize: 28.0, color: Colors.blue),
             ),
             alignment: AlignmentDirectional.center,
@@ -101,10 +104,12 @@ class FlutterRouteWidget extends StatelessWidget {
 
             ///后面的参数会在native的IPlatform.startActivity方法回调中拼接到url的query部分。
             ///例如：sample://nativePage?aaa=bbb
-            onTap: () =>
-                FlutterBoost.singleton.open("sample://nativePage", urlParams: <dynamic,dynamic>{
-                  "query": {"aaa": "bbb"}
-                }),
+            onTap: () => FlutterBoost.singleton.open(
+              'sample://nativePage',
+              urlParams: <String, dynamic>{
+                'query': <String, dynamic>{'aaa': 'bbb'}
+              },
+            ),
           ),
           InkWell(
             child: Container(
@@ -118,10 +123,12 @@ class FlutterRouteWidget extends StatelessWidget {
 
             ///后面的参数会在native的IPlatform.startActivity方法回调中拼接到url的query部分。
             ///例如：sample://nativePage?aaa=bbb
-            onTap: () =>
-                FlutterBoost.singleton.open("sample://flutterPage", urlParams: <dynamic,dynamic>{
-                  "query": {"aaa": "bbb"}
-                }),
+            onTap: () => FlutterBoost.singleton.open(
+              'sample://flutterPage',
+              urlParams: <String, dynamic>{
+                'query': <String, dynamic>{'aaa': 'bbb'},
+              },
+            ),
           ),
           InkWell(
             child: Container(
@@ -131,10 +138,13 @@ class FlutterRouteWidget extends StatelessWidget {
               child: Text(
                 'push flutter widget',
                 style: TextStyle(fontSize: 22.0, color: Colors.black),
-                )),
+              ),
+            ),
             onTap: () {
               Navigator.push<dynamic>(
-                  context, MaterialPageRoute<dynamic>(builder: (_) => PushWidget()));
+                context,
+                MaterialPageRoute<dynamic>(builder: (_) => PushWidget()),
+              );
             },
           ),
           InkWell(
@@ -145,9 +155,10 @@ class FlutterRouteWidget extends StatelessWidget {
               child: Text(
                 'open flutter fragment page',
                 style: TextStyle(fontSize: 22.0, color: Colors.black),
-                )),
+              ),
+            ),
             onTap: () =>
-                FlutterBoost.singleton.open("sample://flutterFragmentPage"),
+                FlutterBoost.singleton.open('sample://flutterFragmentPage'),
           ),
         ],
       ),
@@ -156,15 +167,15 @@ class FlutterRouteWidget extends StatelessWidget {
 }
 
 class FragmentRouteWidget extends StatelessWidget {
-  final Map params;
+  const FragmentRouteWidget(this.params);
 
-  FragmentRouteWidget(this.params);
+  final Map<String, dynamic> params;
 
   @override
   Widget build(BuildContext context) {
     return Scaffold(
       appBar: AppBar(
-        title: Text('flutter_boost_example'),
+        title: const Text('flutter_boost_example'),
       ),
       body: Column(
         crossAxisAlignment: CrossAxisAlignment.start,
@@ -172,7 +183,7 @@ class FragmentRouteWidget extends StatelessWidget {
           Container(
             margin: const EdgeInsets.only(top: 80.0),
             child: Text(
-              "This is a flutter fragment",
+              'This is a flutter fragment',
               style: TextStyle(fontSize: 28.0, color: Colors.blue),
             ),
             alignment: AlignmentDirectional.center,
@@ -180,7 +191,7 @@ class FragmentRouteWidget extends StatelessWidget {
           Container(
             margin: const EdgeInsets.only(top: 32.0),
             child: Text(
-              params['tag'] ?? '',
+              '${params['tag']}' ?? '',
               style: TextStyle(fontSize: 28.0, color: Colors.red),
             ),
             alignment: AlignmentDirectional.center,
@@ -194,8 +205,9 @@ class FragmentRouteWidget extends StatelessWidget {
               child: Text(
                 'open native page',
                 style: TextStyle(fontSize: 22.0, color: Colors.black),
-                )),
-            onTap: () => FlutterBoost.singleton.open("sample://nativePage"),
+              ),
+            ),
+            onTap: () => FlutterBoost.singleton.open('sample://nativePage'),
           ),
           InkWell(
             child: Container(
@@ -205,8 +217,9 @@ class FragmentRouteWidget extends StatelessWidget {
               child: Text(
                 'open flutter page',
                 style: TextStyle(fontSize: 22.0, color: Colors.black),
-                )),
-            onTap: () => FlutterBoost.singleton.open("sample://flutterPage"),
+              ),
+            ),
+            onTap: () => FlutterBoost.singleton.open('sample://flutterPage'),
           ),
           InkWell(
             child: Container(
@@ -216,9 +229,10 @@ class FragmentRouteWidget extends StatelessWidget {
               child: Text(
                 'open flutter fragment page',
                 style: TextStyle(fontSize: 22.0, color: Colors.black),
-                )),
+              ),
+            ),
             onTap: () =>
-                FlutterBoost.singleton.open("sample://flutterFragmentPage"),
+                FlutterBoost.singleton.open('sample://flutterFragmentPage'),
           )
         ],
       ),
@@ -234,15 +248,8 @@ class PushWidget extends StatefulWidget {
 class _PushWidgetState extends State<PushWidget> {
   VoidCallback _backPressedListenerUnsub;
 
-  @override
-  void initState() {
-    // TODO: implement initState
-    super.initState();
-  }
-
   @override
   void didChangeDependencies() {
-    // TODO: implement didChangeDependencies
     super.didChangeDependencies();
 
 //    if (_backPressedListenerUnsub == null) {
@@ -258,13 +265,12 @@ class _PushWidgetState extends State<PushWidget> {
 
   @override
   void dispose() {
-    // TODO: implement dispose
     super.dispose();
     _backPressedListenerUnsub?.call();
   }
 
   @override
   Widget build(BuildContext context) {
-    return FlutterRouteWidget(message: "Pushed Widget");
+    return const FlutterRouteWidget(message: 'Pushed Widget');
   }
 }

example_swift/lib/test_input.dart

 import 'package:flutter/material.dart';
 
 class TestPage extends StatefulWidget {
-  TestPage({Key key, this.title = "Input Test"}) : super(key: key);
+  const TestPage({
+    Key key,
+    this.title = 'Input Test',
+  }) : super(key: key);
 
   final String title;
 
@@ -18,24 +21,16 @@ class _TestPageState extends State<TestPage> {
     });
   }
 
-  @override
-  void initState() {
-    // TODO: implement initState
-    super.initState();
-  }
-
   @override
   Widget build(BuildContext context) {
     return Scaffold(
-      appBar: AppBar(
-        title: Text(widget.title),
-      ),
+      appBar: AppBar(title: Text(widget.title)),
       body: SafeArea(
         bottom: false,
         child: ListView(
           children: <Widget>[
             Container(
-            child: Text(
+              child: const Text(
                 'You have pushed the button this many times:',
               ),
               margin: const EdgeInsets.all(8.0),
@@ -50,10 +45,7 @@ class _TestPageState extends State<TestPage> {
               alignment: Alignment.center,
             ),
             Container(
-            child: TextField(
-              minLines: 2,
-              maxLines: 10,
-            ),
+              child: const TextField(minLines: 2, maxLines: 10),
               padding: const EdgeInsets.all(8.0),
             ),
             TestTextField(),
@@ -98,20 +90,18 @@ class _TestPageState extends State<TestPage> {
               padding: const EdgeInsets.all(8.0),
             ),
             Container(
-            child: TextField(
-              minLines: 2,
-              maxLines: 10,
-            ),
+              child: const TextField(minLines: 2, maxLines: 10),
               padding: const EdgeInsets.all(8.0),
             ),
             TestTextField(),
           ],
-      )),
+        ),
+      ),
       floatingActionButton: FloatingActionButton(
         onPressed: _incrementCounter,
         tooltip: 'Increment',
         child: Icon(Icons.add),
-      ), // This trailing comma makes auto-formatting nicer for build methods.
+      ),
     );
   }
 }
@@ -123,25 +113,24 @@ class TestTextField extends StatefulWidget {
 
 class _TestTextFieldState extends State<TestTextField> {
   FocusNode _node;
-  PersistentBottomSheetController _controller;
+  PersistentBottomSheetController<dynamic> _controller;
 
   @override
   void initState() {
-    // TODO: implement initState
     super.initState();
     _node = FocusNode();
     _node.addListener(() {
       if (_node.hasFocus) {
         print('showBottomSheet');
-        _controller = Scaffold.of(context)
-            .showBottomSheet<dynamic>((BuildContext ctx) => Container(
+        _controller = Scaffold.of(context).showBottomSheet<dynamic>(
+          (BuildContext ctx) => Container(
             width: double.infinity,
             height: 36.0,
             color: Colors.deepPurple,
-                ));
+          ),
+        );
       } else {
         if (_controller != null) {
-          //Navigator.of(context).pop();
           print('closeBottomSheet');
           _controller.close();
         }