fix: 部分代码添加 mounted

lib/components/disclaimer_msg.dart

@@ -33,12 +33,14 @@ class DisclaimerMsgState extends State<DisclaimerMsg> {
   void refs(bool value) async {
     final SharedPreferences prefs = await _prefs;
     final bool unKnow = value;
+    if (mounted) {
       setState(() {
         _unKnow = prefs.setBool("disclaimer::Boolean", unKnow).then((bool success) {
           return unKnow;
         });
       });
     }
+  }
 
   @override
   void initState() {
@@ -135,12 +137,12 @@ class DisclaimerMsgState extends State<DisclaimerMsg> {
                   tristate: false,
                   value: _valBool,
                   onChanged: (bool bol) {
+                    if(mounted) {
                       setState(() {
                         _valBool = bol;
                       });
-//                                refs(bol);
+                    }
-                    Navigator.of(context)
+                    Navigator.of(context).pop(); // here I pop to avoid multiple Dialogs
-                        .pop(); // here I pop to avoid multiple Dialogs
                     showAlertDialog(context); //here i call the same function
                   }),
               Text('不再自动提示', style: TextStyle(fontSize: 14)),

lib/components/list_refresh.dart

@@ -61,7 +61,9 @@ class _ListRefreshState extends State<ListRefresh> {
   Future _getMoreData() async {
     if (!isLoading && _hasMore) {
       // 如果上一次异步请求数据完成 同时有数据可以加载
+      if (mounted) {
         setState(() => isLoading = true);
+      }
       //if(_hasMore){ // 还有数据可以拉新
       List newEntries = await mokeHttpRequest();
       //if (newEntries.isEmpty) {

lib/views/welcome_page/fourth_page.dart

@@ -24,6 +24,7 @@ class FourthPageState extends State<FourthPage> with TickerProviderStateMixin {
     slideUpdateStream = new StreamController<SlideUpdate>();
 
     slideUpdateStream.stream.listen((SlideUpdate event) {
+      if(mounted) {
         setState(() {
           if (event.updateType == UpdateType.dragging) {
             slideDirection = event.direction;
@@ -70,6 +71,7 @@ class FourthPageState extends State<FourthPage> with TickerProviderStateMixin {
             animatedPageDragger.dispose();
           }
         });
+      }
     });
   }
 

lib/widgets/components/List/AnimatedList/demo.dart

@@ -43,11 +43,13 @@ class _AnimatedListFullDefault extends State<AnimatedListFullDefault> {
   void remove() {
     if (_selectedItem != null) {
       _list.removeAt(_list.indexOf(_selectedItem));
+      if(mounted) {
         setState(() {
           _selectedItem = null;
         });
       }
     }
+  }
 
   Widget _buildItem(BuildContext context, int index, Animation<double> animation) {
     return  CardItem(

lib/widgets/components/Navigation/BottomNavigationBar/demo.dart

@@ -25,10 +25,12 @@ class _BottomNavigationBarFullDefault extends State {
    int _currentIndex = 1;
 
   void _onItemTapped(int index) {
+    if(mounted) {
       setState(() {
         _currentIndex = index;
       });
     }
+  }
 
   @override
   Widget build(BuildContext context) {

lib/widgets/elements/Form/Button/DropdownButton/demo.dart

@@ -124,9 +124,11 @@ class DropdownButtonCustom extends StatelessWidget {
         value: selectItemValue,
         //下拉菜单item点击之后的回调
         onChanged: (T){
-          parent.setState((){
+          if (parent.mounted) {
+            parent.setState(() {
               selectItemValue = T;
             });
+          }
         },
         //设置阴影的高度
         elevation: 24,

lib/widgets/elements/Form/Button/FloatingActionButton/index.dart

@@ -50,10 +50,12 @@ class _DemoState extends State<Demo> {
   String buttonShapeType = 'border'; // 边框类型
   void setButtonShapeType(){
     String _buttonShapeType = (buttonShapeType == 'border') ? 'radius' : 'border';
-    this.setState((){
+    if(mounted) {
+      this.setState(() {
         buttonShapeType = _buttonShapeType;
       });
     }
+  }
   @override
   Widget build(BuildContext context) {
     return WidgetDemo(

lib/widgets/elements/Form/Button/IconButton/index.dart

@@ -45,10 +45,12 @@ class _DemoState extends State<Demo> {
   String buttonShapeType = 'border'; // 边框类型
   void setButtonShapeType(){
     String _buttonShapeType = (buttonShapeType == 'border') ? 'radius' : 'border';
-    this.setState((){
+    if(mounted) {
+      this.setState(() {
         buttonShapeType = _buttonShapeType;
       });
     }
+  }
   @override
   Widget build(BuildContext context) {
     return WidgetDemo(

lib/widgets/elements/Form/Button/OutlineButton/index.dart

@@ -54,10 +54,12 @@ class _DemoState extends State<Demo> {
   String buttonShapeType = 'border'; // 边框类型
   void setButtonShapeType(){
     String _buttonShapeType = (buttonShapeType == 'border') ? 'radius' : 'border';
-    this.setState((){
+    if (mounted) {
+      this.setState(() {
         buttonShapeType = _buttonShapeType;
       });
     }
+  }
   @override
   Widget build(BuildContext context) {
     return WidgetDemo(

lib/widgets/elements/Form/Button/RaisedButton/index.dart

@@ -53,10 +53,12 @@ class _DemoState extends State<Demo> {
   String buttonShapeType = 'border'; // 边框类型
   void setButtonShapeType(){
     String _buttonShapeType = (buttonShapeType == 'border') ? 'radius' : 'border';
-    this.setState((){
+    if(mounted) {
+      this.setState(() {
         buttonShapeType = _buttonShapeType;
       });
     }
+  }
   @override
   Widget build(BuildContext context) {
     return WidgetDemo(

lib/widgets/elements/Form/Button/RawMaterialButton/index.dart

@@ -43,10 +43,12 @@ class _DemoState extends State<Demo> {
   String buttonShapeType = 'border'; // 边框类型
   void setButtonShapeType(){
     //String _buttonShapeType = (buttonShapeType == 'border') ? 'radius' : 'border';
-    this.setState((){
+    if( mounted ) {
+      this.setState(() {
         //buttonShapeType = _buttonShapeType;
       });
     }
+  }
   @override
   Widget build(BuildContext context) {
     return WidgetDemo(

lib/widgets/elements/Form/CheckBox/Checkbox/demo.dart

@@ -30,10 +30,12 @@ class _CheckboxDefault extends State {
         tristate:false,
         value: isChecked,
         onChanged: (bool bol) {
-          setState((){
+          if(mounted) {
+            setState(() {
               isChecked = bol;
             });
           }
+        }
     );
   }
 }
@@ -58,10 +60,12 @@ class CheckboxSelect extends StatelessWidget {
         tristate:false,
         value: parent.selectValue == this.index,
         onChanged: (bool bol) {
-          parent.setState((){
+          if(parent.mounted) {
+            parent.setState(() {
               parent.selectValue = bol ? this.index : -1;
             });
           }
+        }
     );
   }
 }

lib/widgets/elements/Form/CheckBox/CheckboxListTile/demo.dart

@@ -25,8 +25,10 @@ class _CheckboxListTileStateDefault extends State {
     for (var i = 0; i < isChecks.length; i++) {
       isChecks[i] = value;
     }
+    if(mounted) {
       setState(() => _value = value);
     }
+  }
   bool isCheck=false;
   List<bool> isChecks=[false,false,false,false];
   @override
@@ -55,9 +57,11 @@ class _CheckboxListTileStateDefault extends State {
               activeColor: _value ? Colors.red : Colors.green,
               controlAffinity: ListTileControlAffinity.platform,
               onChanged: (bool){
+                if(mounted) {
                   setState(() {
-                  isChecks[0]=bool;
+                    isChecks[0] = bool;
                   });
+                }
               }),
         ),
          Center(

lib/widgets/elements/Media/Canvas/Canvas/demo.dart

@@ -39,9 +39,11 @@ class CustomViewPageState extends State<CustomViewPage>
   void initState() {
     super.initState();
     getImage("assets/images/painterImg.jpeg").then((data) {
+      if (mounted) {
         setState(() {
           image = data;
         });
+      }
     });
   }
 

lib/widgets/elements/Media/Canvas/CircleProgressBarPainter/demo.dart

@@ -30,7 +30,9 @@ class CustomViewPageState extends State<CustomViewPage>
     _doubleAnimation = Tween(begin: 0.0, end: 360.0).animate(_controller);
 
     _controller.addListener(() {
+      if(mounted){
         this.setState(() {});
+      }
     });
     onAnimationStart();
   }

lib/widgets/elements/Media/Canvas/PainterSketch/demo.dart

@@ -30,10 +30,12 @@ class _PainterSketchDomeState extends State<PainterSketchDome> {
     final Offset xy = box.globalToLocal(detail.globalPosition);// 重要需要转换以下坐标位置
     Offset p = Offset(xy.dx, xy.dy - 60);
     //Offset p = Offset(detail.globalPosition.dx, detail.globalPosition.dy - 60);
+    if (mounted) {
       setState(() {
         nowPoints.add(p);
       });
     }
+  }
 
   void newGestureDetector(DragStartDetails detail) {
     if (nowPoints.length != 0) {
@@ -45,21 +47,25 @@ class _PainterSketchDomeState extends State<PainterSketchDome> {
     final Offset xy = box.globalToLocal(detail.globalPosition);// 重要需要转换以下坐标位置
     Offset p = Offset(xy.dx, xy.dy - 60);
     //Offset p = Offset(detail.globalPosition.dx, detail.globalPosition.dy - 60);
+    if (mounted) {
       setState(() {
         nowPoints.add(p);
       });
     }
+  }
 
   void changeColor (Color c){
     if (nowPoints.length != 0) {
       LinePoints l = LinePoints(new List<Offset>.from(nowPoints), nowColor);
       lines.add(l);
     }
+    if (mounted) {
       setState(() {
         nowPoints.clear();
         nowColor = c;
       });
     }
+  }
 
   List<Color> colors = <Color>[
     Colors.redAccent,
@@ -74,11 +80,13 @@ class _PainterSketchDomeState extends State<PainterSketchDome> {
     Colors.cyanAccent,];
 
   void _tapClear(){
+    if (mounted) {
       setState(() {
         lines.clear();
         nowPoints.clear();
       });
     }
+  }
 
   @override
   Widget build(BuildContext context) {

lib/widgets/themes/Cupertino/CupertinoPicker/demo.dart

@@ -108,7 +108,9 @@ class _CupertinoPickerDemoState extends State<CupertinoPickerDemo> {
                   backgroundColor: CupertinoColors.white,// 所有子节点下面的背景颜色
                   useMagnifier:true,// 是否使用放大效果
                   onSelectedItemChanged: (int index) { // 当正中间选项改变时的回调
+                    if (mounted) {
                       setState(() => _selectedColorIndex = index);
+                    }
                   },
                   children: List<Widget>.generate(coolColorNames.length, (int index) {
                 return Center(child:
@@ -144,7 +146,9 @@ class _CupertinoPickerDemoState extends State<CupertinoPickerDemo> {
               CupertinoTimerPicker(
                 initialTimerDuration: timer,
                 onTimerDurationChanged: (Duration newTimer) {
+                  if (mounted) {
                     setState(() => timer = newTimer);
+                  }
                 },
               ),
             );
@@ -176,7 +180,9 @@ class _CupertinoPickerDemoState extends State<CupertinoPickerDemo> {
                 mode: CupertinoDatePickerMode.date,
                 initialDateTime: date,
                 onDateTimeChanged: (DateTime newDateTime) {
+                  if (mounted) {
                     setState(() => date = newDateTime);
+                  }
                 },
               ),
             );
@@ -206,7 +212,9 @@ class _CupertinoPickerDemoState extends State<CupertinoPickerDemo> {
                 mode: CupertinoDatePickerMode.time,
                 initialDateTime: time,
                 onDateTimeChanged: (DateTime newDateTime) {
+                  if (mounted) {
                     setState(() => time = newDateTime);
+                  }
                 },
               ),
             );
@@ -236,7 +244,9 @@ class _CupertinoPickerDemoState extends State<CupertinoPickerDemo> {
                 mode: CupertinoDatePickerMode.dateAndTime,
                 initialDateTime: dateTime,
                 onDateTimeChanged: (DateTime newDateTime) {
+                  if (mounted) {
                     setState(() => dateTime = newDateTime);
+                  }
                 },
               ),
             );