hyzp_ybqx-Commit001：代码刚转换好，编译通过

lib/provider/CheckOut.dart

@@ -0,0 +1,12 @@
+import 'package:flutter/material.dart';
+
+class CheckOut with ChangeNotifier {
+  List _checkOutListData = []; //购物车数据
+  List get checkOutListData => this._checkOutListData;
+
+  changeCheckOutListData(data){
+    this._checkOutListData=data;
+    notifyListeners();
+  }
+
+}

lib/provider/player_ratio.dart

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+import 'package:flutter/material.dart';
+
+class PlayerRatioProvide with ChangeNotifier {
+  double scale = 1.0;      //播放区域缩放比例
+  Offset offset = Offset.zero;
+  double deltaX = 0;
+  double deltaY = 0;
+
+  //改变播放区域缩放比例
+  changeScale(double scale) {
+    this.scale = scale;
+    notifyListeners();
+  }
+
+  //改变播放区域偏移位置
+  changeOffset(Offset offset) {
+    this.offset = offset;
+    notifyListeners();
+  }
+
+  changeDeltaX(double deltaX) {
+    this.deltaX = deltaX;
+    notifyListeners();
+  }
+
+  changeDeltaY(double deltaY) {
+    this.deltaY = deltaY;
+    notifyListeners();
+  }
+}

lib/provider/player_region.dart

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+import 'package:flutter/material.dart';
+
+class PlayerRegionProvide with ChangeNotifier {
+  String playerText = '播放';
+  IconData playerIcon = Icons.play_arrow;
+
+  //改变图标
+  changePlayerState(bool bPlaying) {
+    playerText = (bPlaying) ? '暂停' : '播放';
+    playerIcon = (bPlaying) ? Icons.pause : Icons.play_arrow;
+    notifyListeners();
+  }
+
+}