1.添加从父页面向子级组件刷新辅助类

lib/models/base/base_change_notifier.dart

@@ -0,0 +1,83 @@
+import 'package:flutter/material.dart';
+import 'dart:async';
+import 'package:provider/provider.dart';
+
+///页面刷新通知
+class BaseChangeNotifier extends ChangeNotifier {
+  StreamController pageController = StreamController.broadcast();
+
+  ///刷新通知方法
+  void refresh() {
+    pageController.add("refresh");
+    notifyListeners();
+  }
+
+  void close() {
+    pageController.close();
+  }
+
+  Stream get stream => pageController.stream;
+
+}
+
+enum EventType {
+  refresh,
+
+  ///刷新事件
+}
+
+///页面刷新辅助类
+class RefreshListener {
+  bool isListen = false;
+  StreamSubscription streamSubscription;
+
+  ///监听方法
+  ///已废弃
+  void _listen(BuildContext context, Function(String) refresh) {
+    BaseChangeNotifier baseChangeNotifier;
+    try {
+      baseChangeNotifier = Provider.of<BaseChangeNotifier>(context);
+    } catch (e, s) {
+      print(e);
+      print(s);
+      throw Exception(
+          "父页面或父控件必须添加 BaseChangeNotifier 的 Provide值才能使用RefreshListener对象");
+    }
+    if (!isListen && baseChangeNotifier != null) {
+      isListen = true;
+      streamSubscription = baseChangeNotifier.stream.listen((event) {
+        if (refresh != null) {
+          refresh(event);
+        }
+      });
+    }
+  }
+
+  ///监听构造
+  RefreshListener.listen(BuildContext context, Function(String) refresh) {
+    BaseChangeNotifier baseChangeNotifier;
+    try {
+      baseChangeNotifier = Provider.of<BaseChangeNotifier>(context);
+    } catch (e, s) {
+      print(e);
+      print(s);
+      throw Exception(
+          "父页面或父控件必须添加 BaseChangeNotifier 的 Provide值才能使用RefreshListener对象");
+    }
+    if (!isListen && baseChangeNotifier != null) {
+      isListen = true;
+      baseChangeNotifier.stream.listen((event) {
+        if (refresh != null) {
+          refresh(event);
+        }
+      });
+    }
+  }
+
+  ///关闭监听
+  void close() {
+    if (streamSubscription != null) {
+      streamSubscription.cancel();
+    }
+  }
+}

lib/zhiying_comm.dart

@@ -34,4 +34,5 @@ export 'util/widget_creater.dart';
 export 'util/widget_factory.dart';
 export 'package:cached_network_image/cached_network_image.dart';
 export 'util/photo_preview/photo_preview.dart';
+export 'models/base/base_change_notifier.dart';