fix: 部分代码添加 mounted

lib/components/disclaimer_msg.dart

@@ -33,11 +33,13 @@ class DisclaimerMsgState extends State<DisclaimerMsg> {
   void refs(bool value) async {
     final SharedPreferences prefs = await _prefs;
     final bool unKnow = value;
-    setState(() {
+    if (mounted) {
-      _unKnow = prefs.setBool("disclaimer::Boolean", unKnow).then((bool success) {
+      setState(() {
-        return unKnow;
+        _unKnow = prefs.setBool("disclaimer::Boolean", unKnow).then((bool success) {
+          return unKnow;
+        });
       });
-    });
+    }
   }
 
   @override
@@ -135,12 +137,12 @@ class DisclaimerMsgState extends State<DisclaimerMsg> {
                   tristate: false,
                   value: _valBool,
                   onChanged: (bool bol) {
-                    setState(() {
+                    if(mounted) {
-                      _valBool = bol;
+                      setState(() {
-                    });
+                        _valBool = bol;
-//                                refs(bol);
+                      });
-                    Navigator.of(context)
+                    }
-                        .pop(); // here I pop to avoid multiple Dialogs
+                    Navigator.of(context).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
-      setState(() => isLoading = true);
+      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

@@ -24,52 +24,54 @@ class FourthPageState extends State<FourthPage> with TickerProviderStateMixin {
     slideUpdateStream = new StreamController<SlideUpdate>();
 
     slideUpdateStream.stream.listen((SlideUpdate event) {
-      setState(() {
+      if(mounted) {
-        if (event.updateType == UpdateType.dragging) {
+        setState(() {
-          slideDirection = event.direction;
+          if (event.updateType == UpdateType.dragging) {
-          slidePercent = event.slidePercent;
+            slideDirection = event.direction;
+            slidePercent = event.slidePercent;
 
-          if (slideDirection == SlideDirection.leftToRight) {
+            if (slideDirection == SlideDirection.leftToRight) {
-            nextPageIndex = activeIndex - 1;
+              nextPageIndex = activeIndex - 1;
-          } else if (slideDirection == SlideDirection.rightToLeft) {
+            } else if (slideDirection == SlideDirection.rightToLeft) {
-            nextPageIndex = activeIndex + 1;
+              nextPageIndex = activeIndex + 1;
-          } else {
+            } else {
-            nextPageIndex = activeIndex;
+              nextPageIndex = activeIndex;
+            }
+          } else if (event.updateType == UpdateType.doneDragging) {
+            if (slidePercent > 0.5) {
+              animatedPageDragger = new AnimatedPageDragger(
+                slideDirection: slideDirection,
+                transitionGoal: TransitionGoal.open,
+                slidePercent: slidePercent,
+                slideUpdateStream: slideUpdateStream,
+                vsync: this,
+              );
+            } else {
+              animatedPageDragger = new AnimatedPageDragger(
+                slideDirection: slideDirection,
+                transitionGoal: TransitionGoal.close,
+                slidePercent: slidePercent,
+                slideUpdateStream: slideUpdateStream,
+                vsync: this,
+              );
+
+              nextPageIndex = activeIndex;
+            }
+
+            animatedPageDragger.run();
+          } else if (event.updateType == UpdateType.animating) {
+            slideDirection = event.direction;
+            slidePercent = event.slidePercent;
+          } else if (event.updateType == UpdateType.doneAnimating) {
+            activeIndex = nextPageIndex;
+
+            slideDirection = SlideDirection.none;
+            slidePercent = 0.0;
+
+            animatedPageDragger.dispose();
           }
-        } else if (event.updateType == UpdateType.doneDragging) {
+        });
-          if (slidePercent > 0.5) {
+      }
-            animatedPageDragger = new AnimatedPageDragger(
-              slideDirection: slideDirection,
-              transitionGoal: TransitionGoal.open,
-              slidePercent: slidePercent,
-              slideUpdateStream: slideUpdateStream,
-              vsync: this,
-            );
-          } else {
-            animatedPageDragger = new AnimatedPageDragger(
-              slideDirection: slideDirection,
-              transitionGoal: TransitionGoal.close,
-              slidePercent: slidePercent,
-              slideUpdateStream: slideUpdateStream,
-              vsync: this,
-            );
-
-            nextPageIndex = activeIndex;
-          }
-
-          animatedPageDragger.run();
-        } else if (event.updateType == UpdateType.animating) {
-          slideDirection = event.direction;
-          slidePercent = event.slidePercent;
-        } else if (event.updateType == UpdateType.doneAnimating) {
-          activeIndex = nextPageIndex;
-
-          slideDirection = SlideDirection.none;
-          slidePercent = 0.0;
-
-          animatedPageDragger.dispose();
-        }
-      });
     });
   }
 

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

@@ -43,9 +43,11 @@ class _AnimatedListFullDefault extends State<AnimatedListFullDefault> {
   void remove() {
     if (_selectedItem != null) {
       _list.removeAt(_list.indexOf(_selectedItem));
-      setState(() {
+      if(mounted) {
-        _selectedItem = null;
+        setState(() {
-      });
+          _selectedItem = null;
+        });
+      }
     }
   }
 

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

@@ -25,9 +25,11 @@ class _BottomNavigationBarFullDefault extends State {
    int _currentIndex = 1;
 
   void _onItemTapped(int index) {
-    setState(() {
+    if(mounted) {
-      _currentIndex = index;
+      setState(() {
-    });
+        _currentIndex = index;
+      });
+    }
   }
 
   @override

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) {
-            selectItemValue = T;
+            parent.setState(() {
-          });
+              selectItemValue = T;
+            });
+          }
         },
         //设置阴影的高度
         elevation: 24,

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

@@ -50,9 +50,11 @@ class _DemoState extends State<Demo> {
   String buttonShapeType = 'border'; // 边框类型
   void setButtonShapeType(){
     String _buttonShapeType = (buttonShapeType == 'border') ? 'radius' : 'border';
-    this.setState((){
+    if(mounted) {
-      buttonShapeType = _buttonShapeType;
+      this.setState(() {
-    });
+        buttonShapeType = _buttonShapeType;
+      });
+    }
   }
   @override
   Widget build(BuildContext context) {

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

@@ -45,9 +45,11 @@ class _DemoState extends State<Demo> {
   String buttonShapeType = 'border'; // 边框类型
   void setButtonShapeType(){
     String _buttonShapeType = (buttonShapeType == 'border') ? 'radius' : 'border';
-    this.setState((){
+    if(mounted) {
-      buttonShapeType = _buttonShapeType;
+      this.setState(() {
-    });
+        buttonShapeType = _buttonShapeType;
+      });
+    }
   }
   @override
   Widget build(BuildContext context) {

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

@@ -54,9 +54,11 @@ class _DemoState extends State<Demo> {
   String buttonShapeType = 'border'; // 边框类型
   void setButtonShapeType(){
     String _buttonShapeType = (buttonShapeType == 'border') ? 'radius' : 'border';
-    this.setState((){
+    if (mounted) {
-      buttonShapeType = _buttonShapeType;
+      this.setState(() {
-    });
+        buttonShapeType = _buttonShapeType;
+      });
+    }
   }
   @override
   Widget build(BuildContext context) {

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

@@ -53,9 +53,11 @@ class _DemoState extends State<Demo> {
   String buttonShapeType = 'border'; // 边框类型
   void setButtonShapeType(){
     String _buttonShapeType = (buttonShapeType == 'border') ? 'radius' : 'border';
-    this.setState((){
+    if(mounted) {
-      buttonShapeType = _buttonShapeType;
+      this.setState(() {
-    });
+        buttonShapeType = _buttonShapeType;
+      });
+    }
   }
   @override
   Widget build(BuildContext context) {

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

@@ -43,9 +43,11 @@ class _DemoState extends State<Demo> {
   String buttonShapeType = 'border'; // 边框类型
   void setButtonShapeType(){
     //String _buttonShapeType = (buttonShapeType == 'border') ? 'radius' : 'border';
-    this.setState((){
+    if( mounted ) {
-      //buttonShapeType = _buttonShapeType;
+      this.setState(() {
-    });
+        //buttonShapeType = _buttonShapeType;
+      });
+    }
   }
   @override
   Widget build(BuildContext context) {

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

@@ -30,9 +30,11 @@ class _CheckboxDefault extends State {
         tristate:false,
         value: isChecked,
         onChanged: (bool bol) {
-          setState((){
+          if(mounted) {
-            isChecked = bol;
+            setState(() {
-          });
+              isChecked = bol;
+            });
+          }
         }
     );
   }
@@ -58,9 +60,11 @@ class CheckboxSelect extends StatelessWidget {
         tristate:false,
         value: parent.selectValue == this.index,
         onChanged: (bool bol) {
-          parent.setState((){
+          if(parent.mounted) {
-            parent.selectValue = bol ? this.index : -1;
+            parent.setState(() {
-          });
+              parent.selectValue = bol ? this.index : -1;
+            });
+          }
         }
     );
   }

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

@@ -25,7 +25,9 @@ class _CheckboxListTileStateDefault extends State {
     for (var i = 0; i < isChecks.length; i++) {
       isChecks[i] = value;
     }
-    setState(() => _value = value);
+    if(mounted) {
+      setState(() => _value = value);
+    }
   }
   bool isCheck=false;
   List<bool> isChecks=[false,false,false,false];
@@ -55,9 +57,11 @@ class _CheckboxListTileStateDefault extends State {
               activeColor: _value ? Colors.red : Colors.green,
               controlAffinity: ListTileControlAffinity.platform,
               onChanged: (bool){
-                setState(() {
+                if(mounted) {
-                  isChecks[0]=bool;
+                  setState(() {
-                });
+                    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) {
-      setState(() {
+      if (mounted) {
-        image = data;
+        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(() {
-      this.setState(() {});
+      if(mounted){
+        this.setState(() {});
+      }
     });
     onAnimationStart();
   }

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

@@ -30,9 +30,11 @@ 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);
-    setState(() {
+    if (mounted) {
-      nowPoints.add(p);
+      setState(() {
-    });
+        nowPoints.add(p);
+      });
+    }
   }
 
   void newGestureDetector(DragStartDetails detail) {
@@ -45,9 +47,11 @@ 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);
-    setState(() {
+    if (mounted) {
-      nowPoints.add(p);
+      setState(() {
-    });
+        nowPoints.add(p);
+      });
+    }
   }
 
   void changeColor (Color c){
@@ -55,10 +59,12 @@ class _PainterSketchDomeState extends State<PainterSketchDome> {
       LinePoints l = LinePoints(new List<Offset>.from(nowPoints), nowColor);
       lines.add(l);
     }
-    setState(() {
+    if (mounted) {
-      nowPoints.clear();
+      setState(() {
-      nowColor = c;
+        nowPoints.clear();
-    });
+        nowColor = c;
+      });
+    }
   }
 
   List<Color> colors = <Color>[
@@ -74,10 +80,12 @@ class _PainterSketchDomeState extends State<PainterSketchDome> {
     Colors.cyanAccent,];
 
   void _tapClear(){
-    setState(() {
+    if (mounted) {
-      lines.clear();
+      setState(() {
-      nowPoints.clear();
+        lines.clear();
-    });
+        nowPoints.clear();
+      });
+    }
   }
 
   @override

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
-                    setState(() => _selectedColorIndex = index);
+                    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) {
-                  setState(() => timer = newTimer);
+                  if (mounted) {
+                    setState(() => timer = newTimer);
+                  }
                 },
               ),
             );
@@ -176,7 +180,9 @@ class _CupertinoPickerDemoState extends State<CupertinoPickerDemo> {
                 mode: CupertinoDatePickerMode.date,
                 initialDateTime: date,
                 onDateTimeChanged: (DateTime newDateTime) {
-                  setState(() => date = newDateTime);
+                  if (mounted) {
+                    setState(() => date = newDateTime);
+                  }
                 },
               ),
             );
@@ -206,7 +212,9 @@ class _CupertinoPickerDemoState extends State<CupertinoPickerDemo> {
                 mode: CupertinoDatePickerMode.time,
                 initialDateTime: time,
                 onDateTimeChanged: (DateTime newDateTime) {
-                  setState(() => time = newDateTime);
+                  if (mounted) {
+                    setState(() => time = newDateTime);
+                  }
                 },
               ),
             );
@@ -236,7 +244,9 @@ class _CupertinoPickerDemoState extends State<CupertinoPickerDemo> {
                 mode: CupertinoDatePickerMode.dateAndTime,
                 initialDateTime: dateTime,
                 onDateTimeChanged: (DateTime newDateTime) {
-                  setState(() => dateTime = newDateTime);
+                  if (mounted) {
+                    setState(() => dateTime = newDateTime);
+                  }
                 },
               ),
             );