升级至flutter 2.0

CHANGELOG.md

+## [1.0.0]
+* TODO: 升级至flutter 2.0
+* TODO: 处理了空安全
+
+## [0.6.3]
+* TODO: 指定back_button_interceptor依赖
+
+## [0.6.2]
+* TODO: 指定back_button_interceptor依赖
+
 ## [0.6.1]
 * TODO: CupertinoPopoverDirection添加了left和right
 

README.md

@@ -6,6 +6,12 @@
 
 Usage Add this to your package's pubspec.yaml file: 
 
+Flutter >=2.0
+``` yaml
+dependencies:
+  cool_ui: "^1.0.0"
+```
+
 Flutter >=1.17
 ``` yaml
 dependencies:

example/ios/Flutter/flutter_export_environment.sh

@@ -5,7 +5,9 @@ export "FLUTTER_APPLICATION_PATH=F:\TestCode\cool_ui\cool_ui\example"
 export "FLUTTER_TARGET=lib\main.dart"
 export "FLUTTER_BUILD_DIR=build"
 export "SYMROOT=${SOURCE_ROOT}/../build\ios"
-export "OTHER_LDFLAGS=$(inherited) -framework Flutter"
-export "FLUTTER_FRAMEWORK_DIR=F:\flutter\bin\cache\artifacts\engine\ios"
 export "FLUTTER_BUILD_NAME=1.0.0"
 export "FLUTTER_BUILD_NUMBER=1"
+export "DART_OBFUSCATION=false"
+export "TRACK_WIDGET_CREATION=false"
+export "TREE_SHAKE_ICONS=false"
+export "PACKAGE_CONFIG=.packages"

example/lib/keyboards/test_keyboard.dart

@@ -9,7 +9,7 @@ class TestKeyboard extends StatelessWidget{
     return mediaQuery.size.width / 3 / 2 * 2;
   }
   final KeyboardController controller ;
-  const TestKeyboard({this.controller});
+  const TestKeyboard({required this.controller});
 
   static register(){
     CoolKeyboard.addKeyboard(TestKeyboard.inputType,KeyboardConfig(builder: (context,controller, params){
@@ -70,17 +70,14 @@ class TestKeyboard extends StatelessWidget{
     );
   }
 
-  Widget buildButton(String title,{String value}){
-    if(value == null){
-      value = title;
-    }
+  Widget buildButton(String title,{String? value}){
     return Container(
       color: Colors.white,
       child: GestureDetector(
         behavior: HitTestBehavior.translucent,
         child: Center(child: Text(title),),
         onTap: (){
-          controller.addText(value);
+          controller.addText(value ?? title);
         },
       ),
     );

example/lib/main.dart

@@ -39,7 +39,7 @@ class MyApp extends StatelessWidget {
 }
 
 class MyHomePage extends StatefulWidget {
-  MyHomePage({Key key, this.title}) : super(key: key);
+  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

example/lib/pages/custom_keyboard.dart

@@ -59,13 +59,13 @@ class CustomKeyboardDemoState extends State<CustomKeyboardDemo> {
     }));
   }
 
-  static Future<String> showInputDialogs(
-      {@required BuildContext context,
-      Widget titleWidget,
-      Widget messageWidget,
-      List<TextInputFormatter> inputFormatters,
+  static Future<String?> showInputDialogs(
+      {required BuildContext context,
+      Widget? titleWidget,
+      Widget? messageWidget,
+      List<TextInputFormatter>? inputFormatters,
       TextInputType keyboardType = TextInputType.number}) {
-    String value;
+    String? value;
     return showCupertinoDialog<String>(
         context: context,
         builder: (context) {

example/pubspec.yaml

@@ -10,7 +10,7 @@ description: Cool UI Example
 version: 1.0.0+1
 
 environment:
-  sdk: ">=2.0.0-dev.68.0 <3.0.0"
+  sdk: ">=2.12.0 <3.0.0"
 
 dependencies:
   flutter:

lib/dialogs/weui_toast.dart

@@ -4,11 +4,11 @@ typedef HideCallback = Future Function();
 
 class WeuiToastWidget extends StatelessWidget {
   const WeuiToastWidget({
-    Key key,
-    @required this.stopEvent,
-    @required this.alignment,
-    @required this.icon,
-    @required this.message,
+    Key? key,
+    required this.stopEvent,
+    required this.alignment,
+    required this.icon,
+    required this.message,
   }) : super(key: key);
 
   final bool stopEvent;
@@ -68,16 +68,16 @@ class WeuiLoadingIcon extends StatefulWidget {
 
 class WeuiLoadingIconState extends State<WeuiLoadingIcon>
     with SingleTickerProviderStateMixin {
-  AnimationController _controller;
-  Animation<double> _doubleAnimation;
+  AnimationController? _controller ;
+  Animation<double>? _doubleAnimation;
 
   @override
   void initState() {
     super.initState();
-    _controller = new AnimationController(
+    _controller = AnimationController(
         vsync: this, duration: Duration(milliseconds: 1000))
       ..repeat();
-    _doubleAnimation = Tween(begin: 0.0, end: 360.0).animate(_controller)
+    _doubleAnimation = Tween(begin: 0.0, end: 360.0).animate(_controller!)
       ..addListener(() {
         setState(() {});
       });
@@ -86,14 +86,14 @@ class WeuiLoadingIconState extends State<WeuiLoadingIcon>
   @override
   void dispose() {
     // TODO: implement dispose
-    _controller.dispose();
+    _controller!.dispose();
     super.dispose();
   }
 
   @override
   Widget build(BuildContext context) {
     return Transform.rotate(
-        angle: _doubleAnimation.value ~/ 30 * 30.0 * 0.0174533,
+        angle: _doubleAnimation!.value ~/ 30 * 30.0 * 0.0174533,
         child: Image.asset("assets/images/loading.png",
             package: "cool_ui", width: widget.size, height: widget.size));
   }
@@ -115,7 +115,7 @@ class WeuiToastConfigData{
         this.loadingBackButtonClose = false,
         this.toastAlignment = const Alignment(0.0, -0.2)});
 
-  copyWith({String successText,Duration successDuration,String loadingText,Alignment toastAlignment}){
+  copyWith({String? successText, Duration? successDuration, String? loadingText, Alignment? toastAlignment}){
     return WeuiToastConfigData(
       successText: successText ?? this.successText,
       successDuration: successDuration ?? this.successDuration,
@@ -126,8 +126,8 @@ class WeuiToastConfigData{
 }
 
 class WeuiToastConfig extends InheritedWidget{
-  final WeuiToastConfigData data;
-  WeuiToastConfig({Widget child,this.data}): super(child:child);
+  final WeuiToastConfigData? data;
+  WeuiToastConfig({required Widget child,this.data}): super(child:child);
 
   @override
   bool updateShouldNotify(WeuiToastConfig oldWidget) {
@@ -137,21 +137,21 @@ class WeuiToastConfig extends InheritedWidget{
 
   
   static WeuiToastConfigData of(BuildContext context) {
-    var widget = context.inheritFromWidgetOfExactType(WeuiToastConfig);
+    var widget = context.dependOnInheritedWidgetOfExactType<WeuiToastConfig>();
     if(widget is WeuiToastConfig){
-      return widget.data;
+      return widget.data ?? WeuiToastConfigData();
     }
     return WeuiToastConfigData();
   }
 }
 
 Future showWeuiSuccessToast(
-    {@required BuildContext context,
-    Widget message,
+    {required BuildContext context,
+    Widget? message,
     stopEvent = false,
-    bool backButtonClose,
-    Alignment alignment,
-    Duration closeDuration}) {
+    bool? backButtonClose,
+    Alignment? alignment,
+    Duration? closeDuration}) {
       
   var config = WeuiToastConfig.of(context);
   message = message?? Text(config.successText);
@@ -171,11 +171,11 @@ Future showWeuiSuccessToast(
 }
 
 HideCallback showWeuiLoadingToast(
-    {@required BuildContext context,
-    Widget message,
+    {required BuildContext context,
+    Widget? message,
     stopEvent = true,
-    bool backButtonClose,
-    Alignment alignment}) {
+    bool? backButtonClose,
+    Alignment? alignment}) {
   var config = WeuiToastConfig.of(context);
   message = message?? Text(config.loadingText);
   backButtonClose = backButtonClose ?? config.loadingBackButtonClose;
@@ -192,20 +192,19 @@ HideCallback showWeuiLoadingToast(
 int backButtonIndex = 2;
 
 HideCallback showWeuiToast(
-    {@required BuildContext context,
-    @required Widget message,
-    @required Widget icon,
+    {required BuildContext context,
+    required Widget message,
+    required Widget icon,
     bool stopEvent = false,
-    Alignment alignment,
-    bool backButtonClose}) {
+    Alignment? alignment,
+    bool backButtonClose = false}) {
   
   var config = WeuiToastConfig.of(context);
-  alignment = alignment?? config.toastAlignment;
+  alignment = alignment ?? config.toastAlignment;
 
   Completer<VoidCallback> result = Completer<VoidCallback>();
   var backButtonName = 'CoolUI_WeuiToast$backButtonIndex';
-  BackButtonInterceptor.add((stopDefaultButtonEvent){
-    print(backButtonClose);
+  BackButtonInterceptor.add((stopDefaultButtonEvent, routeInfo){
     if(backButtonClose){
       result.future.then((hide){
         hide();
@@ -215,7 +214,7 @@ HideCallback showWeuiToast(
   }, zIndex: backButtonIndex, name: backButtonName);
   backButtonIndex++;
 
-  var overlay = OverlayEntry(
+  OverlayEntry? overlay = OverlayEntry(
     maintainState: true,
       builder: (_) => WillPopScope(
         onWillPop: () async {
@@ -224,7 +223,7 @@ HideCallback showWeuiToast(
           return false;
         },
         child: WeuiToastWidget(
-            alignment: alignment,
+            alignment: alignment!,
             icon: icon,
             message: message,
             stopEvent: stopEvent,
@@ -234,11 +233,11 @@ HideCallback showWeuiToast(
     if(overlay == null){
       return;
     }
-    overlay.remove();
+    overlay!.remove();
     overlay = null;
     BackButtonInterceptor.removeByName(backButtonName);
   });
-  Overlay.of(context).insert(overlay);
+  Overlay.of(context)!.insert(overlay!);
 
 
   return () async {

lib/keyboards/keyboard_controller.dart

@@ -3,7 +3,7 @@ part of cool_ui;
 class KeyboardController extends ValueNotifier<TextEditingValue>{
   final InputClient client;
 
-  KeyboardController({TextEditingValue value,this.client})
+  KeyboardController({TextEditingValue? value,required this.client})
       : super(value == null ? TextEditingValue.empty : value);
 
 

lib/keyboards/keyboard_manager.dart

@@ -2,24 +2,24 @@ part of cool_ui;
 
 typedef GetKeyboardHeight = double Function(BuildContext context);
 typedef KeyboardBuilder = Widget Function(
-    BuildContext context, KeyboardController controller, String param);
+    BuildContext context, KeyboardController controller, String? param);
 
 class CoolKeyboard {
   static JSONMethodCodec _codec = const JSONMethodCodec();
-  static KeyboardConfig _currentKeyboard;
+  static KeyboardConfig? _currentKeyboard;
   static Map<CKTextInputType, KeyboardConfig> _keyboards = {};
-  static KeyboardRootState _root;
-  static BuildContext _context;
-  static KeyboardController _keyboardController;
-  static GlobalKey<KeyboardPageState> _pageKey;
+  static KeyboardRootState? _root;
+  static BuildContext? _context;
+  static KeyboardController? _keyboardController;
+  static GlobalKey<KeyboardPageState>? _pageKey;
   static bool isInterceptor = false;
 
-  static ValueNotifier<double> _keyboardHeightNotifier = ValueNotifier(null)
+  static ValueNotifier<double> _keyboardHeightNotifier = ValueNotifier(0)
     ..addListener(updateKeyboardHeight);
 
-  static String _keyboardParam;
+  static String? _keyboardParam;
 
-  static Timer clearTask;
+  static Timer? clearTask;
 
   static init(KeyboardRootState root, BuildContext context) {
     _root = root;
@@ -30,20 +30,22 @@ class CoolKeyboard {
   static interceptorInput() {
     if (isInterceptor) return;
     isInterceptor = true;
-    ServicesBinding.instance.defaultBinaryMessenger
-        .setMockMessageHandler("flutter/textinput", (ByteData data) async {
+    ServicesBinding.instance!.defaultBinaryMessenger
+        .setMockMessageHandler("flutter/textinput", (ByteData? data) async {
       var methodCall = _codec.decodeMethodCall(data);
       switch (methodCall.method) {
         case 'TextInput.show':
           if (_currentKeyboard != null) {
             if (clearTask != null) {
-              clearTask.cancel();
+              clearTask!.cancel();
               clearTask = null;
             }
             openKeyboard();
             return _codec.encodeSuccessEnvelope(null);
           } else {
-            return await _sendPlatformMessage("flutter/textinput", data);
+            if (data !=  null) {
+              return await _sendPlatformMessage("flutter/textinput", data!);
+            }
           }
           break;
         case 'TextInput.hide':
@@ -54,13 +56,15 @@ class CoolKeyboard {
             }
             return _codec.encodeSuccessEnvelope(null);
           } else {
-            return await _sendPlatformMessage("flutter/textinput", data);
+            if (data !=  null) {
+              return await _sendPlatformMessage("flutter/textinput", data);
+            }
           }
           break;
         case 'TextInput.setEditingState':
           var editingState = TextEditingValue.fromJSON(methodCall.arguments);
-          if (editingState != null && _keyboardController != null) {
-            _keyboardController.value = editingState;
+          if (_keyboardController != null) {
+            _keyboardController!.value = editingState;
             return _codec.encodeSuccessEnvelope(null);
           }
           break;
@@ -73,31 +77,31 @@ class CoolKeyboard {
           break;
         case 'TextInput.setClient':
           var setInputType = methodCall.arguments[1]['inputType'];
-          InputClient client;
+          InputClient? client;
           _keyboards.forEach((inputType, keyboardConfig) {
             if (inputType.name == setInputType['name']) {
               client = InputClient.fromJSON(methodCall.arguments);
 
               _keyboardParam =
-                  (client.configuration.inputType as CKTextInputType).params;
+                  (client!.configuration.inputType as CKTextInputType).params;
 
               clearKeyboard();
               _currentKeyboard = keyboardConfig;
-              _keyboardController = KeyboardController(client: client)
+              _keyboardController = KeyboardController(client: client!)
                 ..addListener(() {
                   var callbackMethodCall = MethodCall(
                       "TextInputClient.updateEditingState", [
-                    _keyboardController.client.connectionId,
-                    _keyboardController.value.toJSON()
+                    _keyboardController!.client.connectionId,
+                    _keyboardController!.value.toJSON()
                   ]);
-                  ServicesBinding.instance.defaultBinaryMessenger
+                  ServicesBinding.instance!.defaultBinaryMessenger
                       .handlePlatformMessage(
                           "flutter/textinput",
                           _codec.encodeMethodCall(callbackMethodCall),
                           (data) {});
                 });
               if (_pageKey != null) {
-                _pageKey.currentState?.update();
+                _pageKey!.currentState?.update();
               }
             }
           });
@@ -114,15 +118,18 @@ class CoolKeyboard {
           }
           break;
       }
-      ByteData response = await _sendPlatformMessage("flutter/textinput", data);
-      return response;
+      if (data != null) {
+        ByteData response = await _sendPlatformMessage("flutter/textinput", data);
+        return response;
+      }
+      return null;
     });
   }
 
   static Future<ByteData> _sendPlatformMessage(
       String channel, ByteData message) {
     final Completer<ByteData> completer = Completer<ByteData>();
-    ui.window.sendPlatformMessage(channel, message, (ByteData reply) {
+    ui.window.sendPlatformMessage(channel, message, (ByteData? reply) {
       try {
         completer.complete(reply);
       } catch (exception, stack) {
@@ -143,9 +150,9 @@ class CoolKeyboard {
   }
 
   static openKeyboard() {
-    var keyboardHeight = _currentKeyboard.getHeight(_context);
+    var keyboardHeight = _currentKeyboard!.getHeight(_context!);
     _keyboardHeightNotifier.value = keyboardHeight;
-    if (_root.hasKeyboard && _pageKey != null) return;
+    if (_root!.hasKeyboard && _pageKey != null) return;
     _pageKey = GlobalKey<KeyboardPageState>();
     // KeyboardMediaQueryState queryState = _context
     //         .ancestorStateOfType(const TypeMatcher<KeyboardMediaQueryState>())
@@ -153,13 +160,13 @@ class CoolKeyboard {
     // queryState.update();
 
     var tempKey = _pageKey;
-    _root.setKeyboard((ctx) {
+    _root!.setKeyboard((ctx) {
       if (_currentKeyboard != null && _keyboardHeightNotifier.value != null) {
         return KeyboardPage(
             key: tempKey,
             builder: (ctx) {
-              return _currentKeyboard?.builder(
-                  ctx, _keyboardController, _keyboardParam);
+              return _currentKeyboard!.builder(
+                  ctx, _keyboardController!, _keyboardParam);
             },
             height: _keyboardHeightNotifier.value);
       } else {
@@ -167,7 +174,7 @@ class CoolKeyboard {
       }
     });
 
-    BackButtonInterceptor.add((_) {
+    BackButtonInterceptor.add((_, _2) {
       CoolKeyboard.sendPerformAction(TextInputAction.done);
       return true;
     }, zIndex: 1, name: 'CustomKeyboard');
@@ -175,13 +182,13 @@ class CoolKeyboard {
 
   static hideKeyboard({bool animation = true}) {
     if (clearTask != null) {
-      if (clearTask.isActive) {
-        clearTask.cancel();
+      if (clearTask!.isActive) {
+        clearTask!.cancel();
       }
       clearTask = null;
     }
     BackButtonInterceptor.removeByName('CustomKeyboard');
-    if (_root.hasKeyboard && _pageKey != null) {
+    if (_root!.hasKeyboard && _pageKey != null) {
       // _pageKey.currentState.animationController
       //     .addStatusListener((AnimationStatus status) {
       //   if (status == AnimationStatus.dismissed ||
@@ -193,16 +200,16 @@ class CoolKeyboard {
       //   }
       // });
       if (animation) {
-        _pageKey.currentState.exitKeyboard();
+        _pageKey!.currentState!.exitKeyboard();
         Future.delayed(Duration(milliseconds: 116)).then((_) {
-          _root.clearKeyboard();
+          _root!.clearKeyboard();
         });
       } else {
-        _root.clearKeyboard();
+        _root!.clearKeyboard();
       }
     }
     _pageKey = null;
-    _keyboardHeightNotifier.value = null;
+    _keyboardHeightNotifier.value = 0;
     try {
       // KeyboardMediaQueryState queryState = _context
       //     .ancestorStateOfType(const TypeMatcher<KeyboardMediaQueryState>())
@@ -214,23 +221,23 @@ class CoolKeyboard {
   static clearKeyboard() {
     _currentKeyboard = null;
     if (_keyboardController != null) {
-      _keyboardController.dispose();
+      _keyboardController!.dispose();
       _keyboardController = null;
     }
   }
 
   static sendPerformAction(TextInputAction action) {
     var callbackMethodCall = MethodCall("TextInputClient.performAction",
-        [_keyboardController.client.connectionId, action.toString()]);
-    defaultBinaryMessenger.handlePlatformMessage("flutter/textinput",
+        [_keyboardController!.client.connectionId, action.toString()]);
+    ServicesBinding.instance!.defaultBinaryMessenger.handlePlatformMessage("flutter/textinput",
         _codec.encodeMethodCall(callbackMethodCall), (data) {});
   }
 
   static updateKeyboardHeight() {
     if (_pageKey != null &&
-        _pageKey.currentState != null &&
+        _pageKey!.currentState != null &&
         clearTask == null) {
-      _pageKey.currentState.updateHeight(_keyboardHeightNotifier.value);
+      _pageKey!.currentState!.updateHeight(_keyboardHeightNotifier.value);
     }
   }
 }
@@ -238,13 +245,13 @@ class CoolKeyboard {
 class KeyboardConfig {
   final KeyboardBuilder builder;
   final GetKeyboardHeight getHeight;
-  const KeyboardConfig({this.builder, this.getHeight});
+  const KeyboardConfig({required this.builder,required this.getHeight});
 }
 
 class InputClient {
   final int connectionId;
   final TextInputConfiguration configuration;
-  const InputClient({this.connectionId, this.configuration});
+  const InputClient({required this.connectionId,required this.configuration});
 
   factory InputClient.fromJSON(List<dynamic> encoded) {
     return InputClient(
@@ -322,9 +329,9 @@ class InputClient {
 
 class CKTextInputType extends TextInputType {
   final String name;
-  final String params;
+  final String? params;
 
-  const CKTextInputType({this.name, bool signed, bool decimal, this.params})
+  const CKTextInputType({required this.name, bool? signed, bool? decimal, this.params})
       : super.numberWithOptions(signed: signed, decimal: decimal);
 
   @override
@@ -369,14 +376,14 @@ class CKTextInputType extends TextInputType {
 class KeyboardPage extends StatefulWidget {
   final WidgetBuilder builder;
   final double height;
-  const KeyboardPage({this.builder, this.height, Key key}) : super(key: key);
+  const KeyboardPage({required this.builder, this.height = 0, Key? key}) : super(key: key);
 
   @override
   State<StatefulWidget> createState() => KeyboardPageState();
 }
 
 class KeyboardPageState extends State<KeyboardPage> {
-  Widget _lastBuildWidget;
+  Widget? _lastBuildWidget;
   bool isClose = false;
   double _height = 0;
 
@@ -385,7 +392,7 @@ class KeyboardPageState extends State<KeyboardPage> {
     // TODO: implement initState
     super.initState();
 
-    WidgetsBinding.instance.addPostFrameCallback((_) {
+    WidgetsBinding.instance!.addPostFrameCallback((_) {
       _height = widget.height;
       setState(() => {});
     });
@@ -433,14 +440,14 @@ class KeyboardPageState extends State<KeyboardPage> {
   }
 
   update() {
-    WidgetsBinding.instance.addPostFrameCallback((_) {
+    WidgetsBinding.instance!.addPostFrameCallback((_) {
       setState(() => {});
     });
   }
 
   updateHeight(double height) {
-    WidgetsBinding.instance.addPostFrameCallback((_) {
-      this._height = height ?? 0;
+    WidgetsBinding.instance!.addPostFrameCallback((_) {
+      this._height = height;
       setState(() => {});
     });
   }

lib/keyboards/keyboard_media_query.dart

@@ -3,8 +3,7 @@ part of cool_ui;
 class KeyboardMediaQuery extends StatefulWidget{
   final Widget child;
 
-  KeyboardMediaQuery({this.child})
-      : assert(child != null);
+  KeyboardMediaQuery({required this.child});
 
   @override
   State<StatefulWidget> createState() =>KeyboardMediaQueryState();
@@ -12,23 +11,22 @@ class KeyboardMediaQuery extends StatefulWidget{
 }
 
 class KeyboardMediaQueryState extends State<KeyboardMediaQuery >{
-  double keyboardHeight;
-  ValueNotifier<double> keyboardHeightNotifier;
+  double keyboardHeight = 0;
+  ValueNotifier<double> keyboardHeightNotifier = CoolKeyboard._keyboardHeightNotifier;
 
   @override
   void initState(){
     super.initState();
     CoolKeyboard._keyboardHeightNotifier.addListener(onUpdateHeight);
-    keyboardHeightNotifier = CoolKeyboard._keyboardHeightNotifier;
   }
 
   @override
   Widget build(BuildContext context) {
     
     // TODO: implement build
-    var data = MediaQuery.of(context, nullOk: true);
+    var data = MediaQuery.maybeOf(context);
     if(data == null){
-      data = MediaQueryData.fromWindow(WidgetsBinding.instance.window);
+      data = MediaQueryData.fromWindow(WidgetsBinding.instance!.window);
     }
     var bottom = CoolKeyboard._keyboardHeightNotifier.value ?? data.viewInsets.bottom;
     // TODO: implement build
@@ -43,7 +41,7 @@ class KeyboardMediaQueryState extends State<KeyboardMediaQuery >{
   }
 
   onUpdateHeight(){
-    WidgetsBinding.instance.addPostFrameCallback((_){
+    WidgetsBinding.instance!.addPostFrameCallback((_){
       setState(()=>{});
     });
   }

lib/keyboards/keyboard_root.dart

@@ -7,7 +7,7 @@ class KeyboardRootWidget extends StatefulWidget {
   final TextDirection textDirection;
 
   const KeyboardRootWidget(
-      {Key key, this.child, this.textDirection = TextDirection.ltr})
+      {Key? key, required this.child, this.textDirection = TextDirection.ltr})
       : super(key: key);
 
   @override
@@ -18,7 +18,7 @@ class KeyboardRootWidget extends StatefulWidget {
 }
 
 class KeyboardRootState extends State<KeyboardRootWidget> {
-  WidgetBuilder _keyboardbuilder;
+  WidgetBuilder? _keyboardbuilder;
 
   bool get hasKeyboard => _keyboardbuilder != null;
   // List<OverlayEntry> _initialEntries = [];
@@ -38,7 +38,7 @@ class KeyboardRootState extends State<KeyboardRootWidget> {
       List<Widget> children = [widget.child];
       if (_keyboardbuilder != null) {
         children.add(Builder(
-          builder: _keyboardbuilder,
+          builder: _keyboardbuilder!,
         ));
       }
       return Directionality(

lib/keyboards/number_keyboard.dart

@@ -7,7 +7,7 @@ class NumberKeyboard extends StatelessWidget{
     return mediaQuery.size.width / 3 / 2 * 4;
   }
   final KeyboardController controller ;
-  const NumberKeyboard({this.controller});
+  const NumberKeyboard({required this.controller});
 
   static register(){
     CoolKeyboard.addKeyboard(NumberKeyboard.inputType,KeyboardConfig(builder: (context,controller, params){
@@ -68,17 +68,14 @@ class NumberKeyboard extends StatelessWidget{
     );
   }
 
-  Widget buildButton(String title,{String value}){
-    if(value == null){
-      value = title;
-    }
+  Widget buildButton(String title,{String? value}){
     return Container(
       color: Colors.white,
       child: GestureDetector(
         behavior: HitTestBehavior.translucent,
         child: Center(child: Text(title),),
         onTap: (){
-          controller.addText(value);
+          controller.addText(value ?? title);
         },
       ),
     );

lib/utils/screen_util.dart

@@ -34,7 +34,7 @@ class _ScreenUtil {
   double _bottomBarHeight = 0.0;
   double _appBarHeight = 0.0;
   double _textScaleFactor = 0.0;
-  MediaQueryData _mediaQueryData;
+  MediaQueryData? _mediaQueryData;
 
   static final _ScreenUtil _singleton = _ScreenUtil();
 
@@ -82,7 +82,7 @@ class _ScreenUtil {
   double get bottomBarHeight => _bottomBarHeight;
 
   /// media Query Data
-  MediaQueryData get mediaQueryData => _mediaQueryData;
+  MediaQueryData? get mediaQueryData => _mediaQueryData;
 
   /// screen width
   /// 当前屏幕 宽

lib/utils/widget_util.dart

@@ -11,8 +11,8 @@ part of cool_ui;
 /// Widget Util.
 class _WidgetUtil {
   bool _hasMeasured = false;
-  double _width;
-  double _height;
+  double? _width;
+  double? _height;
 
   /// Widget rendering listener.
   /// Widget渲染监听.
@@ -22,8 +22,8 @@ class _WidgetUtil {
   void asyncPrepare(
       BuildContext context, bool isOnce, ValueChanged<Rect> onCallBack) {
     if (_hasMeasured) return;
-    WidgetsBinding.instance.addPostFrameCallback((Duration timeStamp) {
-      RenderBox box = context.findRenderObject();
+    WidgetsBinding.instance!.addPostFrameCallback((Duration timeStamp) {
+      RenderBox? box = context.findRenderObject() as RenderBox?;
       if (box != null && box.semanticBounds != null) {
         if (isOnce) _hasMeasured = true;
         double width = box.semanticBounds.width;
@@ -38,9 +38,9 @@ class _WidgetUtil {
   }
 
   /// Widget渲染监听.
-  void asyncPrepares(bool isOnce, ValueChanged<Rect> onCallBack) {
+  void asyncPrepares(bool isOnce, ValueChanged<Rect?>? onCallBack) {
     if (_hasMeasured) return;
-    WidgetsBinding.instance.addPostFrameCallback((Duration timeStamp) {
+    WidgetsBinding.instance!.addPostFrameCallback((Duration timeStamp) {
       if (isOnce) _hasMeasured = true;
       if (onCallBack != null) onCallBack(null);
     });
@@ -49,8 +49,8 @@ class _WidgetUtil {
   ///get Widget Bounds (width, height, left, top, right, bottom and so on).Widgets must be rendered completely.
   ///获取widget Rect
   static Rect getWidgetBounds(BuildContext context) {
-    RenderBox box = context.findRenderObject();
-    return (box != null && box.semanticBounds != null)
+    RenderBox? box = context.findRenderObject() as RenderBox?;
+    return (box != null)
         ? box.semanticBounds
         : Rect.zero;
   }
@@ -58,7 +58,7 @@ class _WidgetUtil {
   ///Get the coordinates of the widget on the screen.Widgets must be rendered completely.
   ///获取widget在屏幕上的坐标,widget必须渲染完成
   static Offset getWidgetLocalToGlobal(BuildContext context) {
-    RenderBox box = context.findRenderObject();
+    RenderBox? box = context.findRenderObject() as RenderBox?;
     return box == null ? Offset.zero : box.localToGlobal(Offset.zero);
   }
 }
\ No newline at end of file

lib/widgets/popover/cupertino_popover.dart

@@ -6,26 +6,26 @@ typedef BoolCallback = bool Function();
 
 class CupertinoPopoverButton extends StatelessWidget {
   final Widget child;
-  final WidgetBuilder popoverBuild;
-  final double popoverWidth;
-  final double popoverHeight;
+  final WidgetBuilder? popoverBuild;
+  final double? popoverWidth;
+  final double? popoverHeight;
   final Color popoverColor;
-  final List<BoxShadow> popoverBoxShadow;
+  final List<BoxShadow>? popoverBoxShadow;
   final double radius;
   final Duration transitionDuration;
-  final BoolCallback onTap;
-  final BoxConstraints popoverConstraints;
+  final BoolCallback? onTap;
+  final BoxConstraints? popoverConstraints;
   final Color barrierColor;
   final CupertinoPopoverDirection direction;
 
   CupertinoPopoverButton(
-      {@required this.child,
+      {required this.child,
       this.popoverBuild,
       this.popoverColor = Colors.white,
       this.popoverBoxShadow,
       this.popoverWidth,
       this.popoverHeight,
-      BoxConstraints popoverConstraints,
+      BoxConstraints? popoverConstraints,
       this.direction = CupertinoPopoverDirection.bottom,
       this.onTap,
       this.transitionDuration = const Duration(milliseconds: 200),
@@ -46,7 +46,7 @@ class CupertinoPopoverButton extends StatelessWidget {
     return GestureDetector(
       behavior: HitTestBehavior.translucent,
       onTap: () {
-        if (onTap != null && onTap()) {
+        if (onTap != null && onTap!()) {
           return;
         }
         var offset = _WidgetUtil.getWidgetLocalToGlobal(context);
@@ -68,7 +68,7 @@ class CupertinoPopoverButton extends StatelessWidget {
           transitionBuilder: (BuildContext context, Animation<double> animation,
               Animation<double> secondaryAnimation, Widget child) {
             if (body == null) {
-              body = popoverBuild(context);
+              body = popoverBuild!(context);
             }
             return FadeTransition(
               opacity: CurvedAnimation(
@@ -101,21 +101,21 @@ class CupertinoPopover extends StatefulWidget {
   final Rect attachRect;
   final Widget child;
   final Color color;
-  final List<BoxShadow> boxShadow;
+  final List<BoxShadow>? boxShadow;
   final double radius;
   final CupertinoPopoverDirection direction;
   final Animation<double> doubleAnimation;
-  BoxConstraints constraints;
+  BoxConstraints? constraints;
 
   CupertinoPopover(
-      {@required this.attachRect,
-      @required this.child,
-      BoxConstraints constraints,
+      {required this.attachRect,
+      required this.child,
+      BoxConstraints? constraints,
       this.color = Colors.white,
       this.boxShadow,
-      @required BuildContext context,
+      required BuildContext context,
       this.direction = CupertinoPopoverDirection.bottom,
-      this.doubleAnimation,
+      required this.doubleAnimation,
       this.radius = 8.0})
       : super() {
     BoxConstraints temp;
@@ -155,11 +155,6 @@ class CupertinoPopoverState extends State<CupertinoPopover>
   static const double _arrowWidth = 12.0;
   static const double _arrowHeight = 8.0;
 
-//  AnimationController animation;
-
-  /// 是否箭头向上
-  bool isArrowUp;
-
   @override
   void initState() {
     super.initState();
@@ -179,7 +174,7 @@ class CupertinoPopoverState extends State<CupertinoPopover>
             scale: widget.doubleAnimation,
             radius: widget.radius,
             color: widget.color,
-            boxShadow: widget.boxShadow,
+            boxShadow: widget.boxShadow ?? [],
             direction: widget.direction,
             child:
                 Material(type: MaterialType.transparency, child: widget.child),
@@ -193,15 +188,15 @@ class CupertinoPopoverState extends State<CupertinoPopover>
 class _CupertionPopoverPosition extends SingleChildRenderObjectWidget {
   final Rect attachRect;
   final Animation<double> scale;
-  final BoxConstraints constraints;
+  final BoxConstraints? constraints;
   final CupertinoPopoverDirection direction;
 
   _CupertionPopoverPosition(
-      {Widget child,
-      this.attachRect,
+      {required Widget child,
+      required this.attachRect,
       this.constraints,
-      this.scale,
-      this.direction})
+      required this.scale,
+      required this.direction})
       : super(child: child);
 
   @override
@@ -209,7 +204,7 @@ class _CupertionPopoverPosition extends SingleChildRenderObjectWidget {
       _CupertionPopoverPositionRenderObject(
           attachRect: attachRect,
           direction: direction,
-          constraints: constraints);
+          constraints: constraints ?? BoxConstraints());
 
   @override
   void updateRenderObject(BuildContext context,
@@ -217,7 +212,7 @@ class _CupertionPopoverPosition extends SingleChildRenderObjectWidget {
     renderObject
       ..attachRect = attachRect
       ..direction = direction
-      ..additionalConstraints = constraints;
+      ..additionalConstraints = constraints ?? BoxConstraints();
   }
 
   @override
@@ -255,27 +250,25 @@ class _CupertionPopoverPositionRenderObject extends RenderShiftedBox {
   }
 
   _CupertionPopoverPositionRenderObject(
-      {RenderBox child,
-      Rect attachRect,
-      Color color,
-      BoxConstraints constraints,
-      Animation<double> scale,
-      CupertinoPopoverDirection direction})
-      : super(child) {
-    this._attachRect = attachRect;
-    this._additionalConstraints = constraints;
-    this._direction = direction;
-  }
+      {RenderBox? child,
+      required Rect attachRect,
+      BoxConstraints constraints = const BoxConstraints(),
+      required CupertinoPopoverDirection direction})
+      : 
+      this._attachRect = attachRect,
+      this._additionalConstraints = constraints,
+      this._direction = direction,
+      super(child);
 
   @override
   void performLayout() {
-    child.layout(_additionalConstraints.enforce(constraints),
+    child!.layout(_additionalConstraints.enforce(constraints),
         parentUsesSize: true);
     size = Size(constraints.maxWidth, constraints.maxHeight);
 
-    final BoxParentData childParentData = child.parentData;
+    final BoxParentData childParentData = child!.parentData as BoxParentData;
 
-    childParentData.offset = calcOffset(child.size);
+    childParentData.offset = calcOffset(child!.size);
   }
 
   Offset calcOffset(Size size) {
@@ -346,13 +339,13 @@ class _CupertionPopoverContext extends SingleChildRenderObjectWidget {
   final double radius;
   final CupertinoPopoverDirection direction;
   _CupertionPopoverContext(
-      {Widget child,
-      this.attachRect,
-      this.color,
-      this.boxShadow,
-      this.scale,
-      this.radius,
-      this.direction})
+      {required Widget child,
+      required this.attachRect,
+      required this.color,
+      this.boxShadow = const [],
+      required this.scale,
+      required this.radius,
+      required this.direction})
       : super(child: child);
 
   @override
@@ -430,21 +423,20 @@ class _CupertionPopoverContextRenderObject extends RenderShiftedBox {
   }
 
   _CupertionPopoverContextRenderObject(
-      {RenderBox child,
-      Rect attachRect,
-      Color color,
-      List<BoxShadow> boxShadow,
-      double scale,
-      double radius,
-      CupertinoPopoverDirection direction})
-      : super(child) {
-    this._attachRect = attachRect;
-    this._color = color;
-    this._boxShadow = boxShadow;
-    this._scale = scale;
-    this._radius = radius;
-    this._direction = direction;
-  }
+      {RenderBox? child,
+      required Rect attachRect,
+      required Color color,
+      List<BoxShadow> boxShadow = const [],
+      required double scale,
+      required double radius,
+      required CupertinoPopoverDirection direction})
+      : 
+    this._attachRect = attachRect,
+    this._color = color,
+    this._boxShadow = boxShadow,
+    this._scale = scale,
+    this._radius = radius,
+    this._direction = direction,super(child);
 
   @override
   void performLayout() {
@@ -464,20 +456,20 @@ class _CupertionPopoverContextRenderObject extends RenderShiftedBox {
           .enforce(constraints);
     }
 
-    child.layout(childConstraints, parentUsesSize: true);
+    child!.layout(childConstraints, parentUsesSize: true);
 
     if (direction == CupertinoPopoverDirection.top ||
         direction == CupertinoPopoverDirection.bottom) {
-      size = Size(child.size.width,
-          child.size.height + CupertinoPopoverState._arrowHeight);
+      size = Size(child!.size.width,
+          child!.size.height + CupertinoPopoverState._arrowHeight);
     } else {
-      size = Size(child.size.width + CupertinoPopoverState._arrowHeight,
-          child.size.height);
+      size = Size(child!.size.width + CupertinoPopoverState._arrowHeight,
+          child!.size.height);
     }
     CupertinoPopoverDirection calcDirection =
         _calcDirection(attachRect, size, direction);
 
-    final BoxParentData childParentData = child.parentData;
+    final BoxParentData childParentData = child!.parentData as BoxParentData;
     if (calcDirection == CupertinoPopoverDirection.bottom) {
       childParentData.offset = Offset(0.0, CupertinoPopoverState._arrowHeight);
     } else if (calcDirection == CupertinoPopoverDirection.right) {
@@ -493,13 +485,13 @@ class _CupertionPopoverContextRenderObject extends RenderShiftedBox {
 
     CupertinoPopoverDirection calcDirection =
         _calcDirection(attachRect, size, direction);
-    // var isArrowUp = calcDirection == CupertinoPopoverDirection.bottom;
-    Rect arrowRect;
-    Offset translation;
+        
+    Rect? arrowRect;
+    Offset? translation;
     Rect bodyRect;
 
-    final BoxParentData childParentData = child.parentData;
-    bodyRect = childParentData.offset & child.size;
+    final BoxParentData childParentData = (child!.parentData) as BoxParentData;
+    bodyRect = childParentData.offset & child!.size;
 
     var arrowLeft = attachRect.left + // 用于 Top和Bottom
         attachRect.width / 2 -
@@ -515,7 +507,7 @@ class _CupertionPopoverContextRenderObject extends RenderShiftedBox {
       case CupertinoPopoverDirection.top:
         arrowRect = Rect.fromLTWH(
             arrowLeft,
-            child.size.height,
+            child!.size.height,
             CupertinoPopoverState._arrowWidth,
             CupertinoPopoverState._arrowHeight);
         translation = Offset(
@@ -524,7 +516,7 @@ class _CupertionPopoverContextRenderObject extends RenderShiftedBox {
         break;
       case CupertinoPopoverDirection.left:
         arrowRect = Rect.fromLTWH(
-            child.size.width,
+            child!.size.width,
             arrowTop,
             CupertinoPopoverState._arrowHeight,
             CupertinoPopoverState._arrowWidth);
@@ -552,12 +544,12 @@ class _CupertionPopoverContextRenderObject extends RenderShiftedBox {
       default:
     }
 
-    transform.translate(translation.dx, translation.dy);
+    transform.translate(translation!.dx, translation.dy);
     transform.scale(scale, scale, 1.0);
     transform.translate(-translation.dx, -translation.dy);
 
     _paintShadows(
-        context, transform, offset, calcDirection, arrowRect, bodyRect);
+        context, transform, offset, calcDirection, arrowRect!, bodyRect);
 
     Path clipPath = _getClip(calcDirection, arrowRect, bodyRect);
     context.pushClipPath(needsCompositing, offset, offset & size, clipPath,
@@ -574,7 +566,6 @@ class _CupertionPopoverContextRenderObject extends RenderShiftedBox {
 
   void _paintShadows(PaintingContext context, Matrix4 transform, Offset offset,
       CupertinoPopoverDirection direction, Rect arrowRect, Rect bodyRect) {
-    if (boxShadow == null) return;
     for (final BoxShadow boxShadow in boxShadow) {
       final Paint paint = boxShadow.toPaint();
       arrowRect = arrowRect

lib/widgets/popover/cupertino_popover_menu_item.dart

@@ -2,7 +2,7 @@ part of cool_ui;
 
 class CupertinoPopoverMenuList extends StatelessWidget {
   final List<Widget> children;
-  const CupertinoPopoverMenuList({this.children});
+  const CupertinoPopoverMenuList({this.children = const []});
 
   @override
   Widget build(BuildContext context) {
@@ -25,16 +25,16 @@ class CupertinoPopoverMenuList extends StatelessWidget {
 }
 
 class CupertinoPopoverMenuItem extends StatefulWidget {
-  final Widget leading;
+  final Widget? leading;
   final Widget child;
-  final BoolCallback onTap;
+  final BoolCallback? onTap;
   final bool isTapClosePopover;
   final Color activeBackground;
   final Color background;
 
   const CupertinoPopoverMenuItem(
       {this.leading,
-      this.child,
+      required this.child,
       this.onTap,
       this.background = Colors.white,
       this.activeBackground = const Color(0xFFd9d9d9),
@@ -57,7 +57,7 @@ class CupertinoPopoverMenuItemState extends State<CupertinoPopoverMenuItem> {
         height: 35.0,
         child: IconTheme(
             data: IconThemeData(color: Color(0xff007aff), size: 20.0),
-            child: widget.leading),
+            child: widget.leading!),
       ));
     }
     widgets.add(Expanded(
@@ -75,7 +75,7 @@ class CupertinoPopoverMenuItemState extends State<CupertinoPopoverMenuItem> {
           setState(() {
             isDown = false;
           });
-          if (widget.onTap != null && widget.onTap()) {
+          if (widget.onTap != null && widget.onTap!()) {
             return;
           }
           if (widget.isTapClosePopover) {

lib/widgets/tables/table.dart

@@ -54,9 +54,9 @@ class CoolTableState extends State<CoolTable>{
 }
 
 class CoolColumnInfo{
-  final double flex;
-  final double width;
-  final Widget title;
+  final double? flex;
+  final double? width;
+  final Widget? title;
 
   const CoolColumnInfo({this.flex, this.width, this.title});
 }
\ No newline at end of file

lib/widgets/utils/paint_event.dart

@@ -5,15 +5,15 @@ typedef PaintCallback = void Function(PaintingContext context, Offset offset,Siz
 class PaintEvent extends SingleChildRenderObjectWidget{
 
 
-  final PaintCallback paintBefore;
-  final PaintCallback paintAfter;
+  final PaintCallback? paintBefore;
+  final PaintCallback? paintAfter;
 
 
   const PaintEvent({
-    Key key,
+    Key? key,
     this.paintBefore,
     this.paintAfter,
-    Widget child
+    Widget? child
   }) :
         super(key: key, child: child);
   @override
@@ -34,11 +34,11 @@ class PaintEvent extends SingleChildRenderObjectWidget{
 
 
 class PaintEventProxyBox extends RenderProxyBox{
-  PaintCallback paintBefore;
-  PaintCallback paintAfter;
+  PaintCallback? paintBefore;
+  PaintCallback? paintAfter;
 
   PaintEventProxyBox({
-    RenderBox child,
+    RenderBox? child,
     this.paintBefore,
     this.paintAfter
   }):super(child);
@@ -51,11 +51,8 @@ class PaintEventProxyBox extends RenderProxyBox{
 
   @override
   void paint(PaintingContext context, Offset offset) {
-    assert(size.width != null);
-    assert(size.height != null);
-
     if(this.paintBefore != null){
-      this.paintBefore(context,offset,size);
+      this.paintBefore!(context,offset,size);
     }
 
     super.paint(context, offset);
@@ -63,7 +60,7 @@ class PaintEventProxyBox extends RenderProxyBox{
 
 
     if(this.paintAfter != null){
-      this.paintAfter(context,offset,size);
+      this.paintAfter!(context,offset,size);
     }
 
   }

pub.bat

 set PUB_HOSTED_URL=
 set FLUTTER_STORAGE_BASE_URL=
-set http_proxy=http://127.0.0.1:1080
-set https_proxy=https://127.0.0.1:1080
+set http_proxy=http://127.0.0.1:7890 & set https_proxy=http://127.0.0.1:7890
 flutter packages pub publish
\ No newline at end of file

pubspec.lock

 # Generated by pub
 # See https://dart.dev/tools/pub/glossary#lockfile
 packages:
-  archive:
-    dependency: transitive
-    description:
-      name: archive
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "2.0.13"
-  args:
-    dependency: transitive
-    description:
-      name: args
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.6.0"
   async:
     dependency: transitive
     description:
       name: async
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.4.1"
+    version: "2.5.0"
   back_button_interceptor:
     dependency: "direct main"
     description:
       name: back_button_interceptor
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "4.2.2"
+    version: "5.0.0"
   boolean_selector:
     dependency: transitive
     description:
       name: boolean_selector
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.0.0"
+    version: "2.1.0"
+  characters:
+    dependency: transitive
+    description:
+      name: characters
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.1.0"
   charcode:
     dependency: transitive
     description:
       name: charcode
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.1.3"
-  collection:
+    version: "1.2.0"
+  clock:
     dependency: transitive
     description:
-      name: collection
+      name: clock
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.14.12"
-  convert:
+    version: "1.1.0"
+  collection:
     dependency: transitive
     description:
-      name: convert
+      name: collection
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.1.1"
-  crypto:
+    version: "1.15.0"
+  fake_async:
     dependency: transitive
     description:
-      name: crypto
+      name: fake_async
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.1.4"
+    version: "1.2.0"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -74,48 +67,27 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
-  image:
-    dependency: transitive
-    description:
-      name: image
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "2.1.12"
   matcher:
     dependency: transitive
     description:
       name: matcher
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.12.6"
+    version: "0.12.10"
   meta:
     dependency: transitive
     description:
       name: meta
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.1.8"
+    version: "1.3.0"
   path:
     dependency: transitive
     description:
       name: path
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.6.4"
-  petitparser:
-    dependency: transitive
-    description:
-      name: petitparser
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "2.4.0"
-  quiver:
-    dependency: transitive
-    description:
-      name: quiver
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "2.1.3"
+    version: "1.8.0"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -127,63 +99,56 @@ packages:
       name: source_span
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.7.0"
+    version: "1.8.0"
   stack_trace:
     dependency: transitive
     description:
       name: stack_trace
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.9.3"
+    version: "1.10.0"
   stream_channel:
     dependency: transitive
     description:
       name: stream_channel
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.0.0"
+    version: "2.1.0"
   string_scanner:
     dependency: transitive
     description:
       name: string_scanner
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.0.5"
+    version: "1.1.0"
   term_glyph:
     dependency: transitive
     description:
       name: term_glyph
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.1.0"
+    version: "1.2.0"
   test_api:
     dependency: transitive
     description:
       name: test_api
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.2.15"
+    version: "0.2.19"
   typed_data:
     dependency: transitive
     description:
       name: typed_data
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.1.6"
+    version: "1.3.0"
   vector_math:
     dependency: transitive
     description:
       name: vector_math
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.0.8"
-  xml:
-    dependency: transitive
-    description:
-      name: xml
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "3.6.1"
+    version: "2.1.0"
 sdks:
-  dart: ">=2.6.0 <3.0.0"
-  flutter: ">=1.17.0 <2.0.0"
+  dart: ">=2.12.0 <3.0.0"
+  flutter: ">=2.0.0"

pubspec.yaml

 name: cool_ui
 description: Some practical Widget for flutter,Popover,Weui,Custom Keyboard
-version: 0.6.1
+version: 1.0.0
 author: Kevin <liangkaikevin@gmail.com>
 homepage: https://github.com/Im-Kevin/cool_ui
 
 environment:
-  sdk: ">=2.0.0 <3.0.0"
-  flutter: ">=1.17.0 <2.0.0"
+  sdk: ">=2.12.0 <3.0.0"
+  flutter: ">=2.0.0 <3.0.0"
 
 dependencies:
-  back_button_interceptor: ^4.0.6
+  back_button_interceptor: 5.0.0
   flutter:
     sdk: flutter