📝 修改文档

README.md

@@ -27,7 +27,7 @@ Tools • Dart 2.7.0
 
 #### Flutter Unit 周边
 
-- 🔥 [Flutter Unit 更新记录 ](http://blog.toly1994.com/FlutterUnit_update.html)
+- 🔥 [Flutter Unit 更新记录 ](http://king.toly1994.com/FlutterUnit_update.html)
 
 
 ---

lib/views/pages/category/collect_page.dart

@@ -9,7 +9,12 @@ import 'package:flutter_unit/views/items/collect_widget_list_item.dart';
 
 import 'category_page.dart';
 
-class CollectPage extends StatelessWidget {
+class CollectPage extends StatefulWidget {
+  @override
+  _CollectPageState createState() => _CollectPageState();
+}
+
+class _CollectPageState extends State<CollectPage> with AutomaticKeepAliveClientMixin{
   final gridDelegate = const SliverGridDelegateWithFixedCrossAxisCount(
     crossAxisCount: 2,
     mainAxisSpacing: 10,
@@ -19,9 +24,10 @@ class CollectPage extends StatelessWidget {
 
   final _tabs = ['收藏集录','默认收藏', ];
 
-
   @override
   Widget build(BuildContext context) {
+    print('-------CollectPage-------build-------');
+
    var _topContext = context;
     return Scaffold(
         backgroundColor: BlocProvider.of<HomeBloc>(context).state.homeColor.withAlpha(11),
@@ -43,9 +49,12 @@ class CollectPage extends StatelessWidget {
                 children: <Widget>[
                   CategoryPage(),
                   BlocBuilder<CollectBloc, CollectState>(
-                      builder: (_, state) => CustomScrollView(
+                      builder: (_, state) {
+//                        print('-------BlocBuilder-------build-------');
+                        return CustomScrollView(
                             slivers: <Widget>[_buildContent(context, state)],
-                          )),
+                          );
+                      }),
                 ],
               ),
             ),
@@ -136,4 +145,8 @@ class CollectPage extends StatelessWidget {
     BlocProvider.of<DetailBloc>(context).add(FetchWidgetDetail(model));
     Navigator.pushNamed(context, Router.widget_detail, arguments: model);
   }
+
+  @override
+  // TODO: implement wantKeepAlive
+  bool get wantKeepAlive => true;
 }

lib/views/pages/home/home_page.dart

@@ -18,7 +18,7 @@ class HomePage extends StatefulWidget {
   _HomePageState createState() => _HomePageState();
 }
 
-class _HomePageState extends State<HomePage> {
+class _HomePageState extends State<HomePage>  with AutomaticKeepAliveClientMixin{
   ScrollController _ctrl;
   double _limitY = 35;
   double _height = kToolbarHeight * 2 - 20;
@@ -31,6 +31,7 @@ class _HomePageState extends State<HomePage> {
 
   @override
   Widget build(BuildContext context) {
+    print('-------HomePage-------build-------');
     var color = BlocProvider.of<HomeBloc>(context).state.homeColor;
     var showBg = BlocProvider.of<GlobalBloc>(context).state.showBackGround;
     return Scaffold(
@@ -92,4 +93,8 @@ class _HomePageState extends State<HomePage> {
     BlocProvider.of<DetailBloc>(context).add(FetchWidgetDetail(model));
     Navigator.pushNamed(context, Router.widget_detail, arguments: model);
   }
+
+  @override
+  // TODO: implement wantKeepAlive
+  bool get wantKeepAlive => true;
 }

lib/views/widgets/SingleChildRenderObjectWidget/CustomPaint/node2_bezier.dart

@@ -36,16 +36,14 @@ class _PlayBezier3PageState extends State<PlayBezier3Page> {
     _pos.add(Offset(-120, -40));
   }
 
-
   @override
   Widget build(BuildContext context) {
-    return  Container(
-        height: 200,
-        width: MediaQuery.of(context).size.width,
-        child: CustomPaint(
-          painter: BezierPainter(pos: _pos, selectPos: selectPos),
-        ),
-
+    return Container(
+      height: 200,
+      width: MediaQuery.of(context).size.width,
+      child: CustomPaint(
+        painter: BezierPainter(pos: _pos, selectPos: selectPos),
+      ),
     );
   }
 }
@@ -85,12 +83,12 @@ class BezierPainter extends CustomPainter {
     _drawGrid(canvas, size); //绘制格线
     _drawAxis(canvas, size); //绘制轴线
 
-      _mainPath.moveTo(pos[0].dx, pos[0].dy);
-      _mainPath.cubicTo(pos[1].dx, pos[1].dy, pos[2].dx, pos[2].dy, pos[3].dx, pos[3].dy);
-      canvas.drawPath(_mainPath, _mainPaint);
-      _drawHelp(canvas);
-      _drawSelectPos(canvas);
-
+    _mainPath.moveTo(pos[0].dx, pos[0].dy);
+    _mainPath.cubicTo(
+        pos[1].dx, pos[1].dy, pos[2].dx, pos[2].dy, pos[3].dx, pos[3].dy);
+    canvas.drawPath(_mainPath, _mainPaint);
+    _drawHelp(canvas);
+    _drawSelectPos(canvas);
   }
 
   @override
@@ -170,4 +168,4 @@ class BezierPainter extends CustomPainter {
           ..color = Colors.green
           ..strokeWidth = 2);
   }
-}
+}