firset commit

lib/common/base/ui_model.dart

@@ -0,0 +1,46 @@
+import 'package:flutter/material.dart';
+
+class BaseUIModel with ChangeNotifier {
+  static Function? staticNotifyListeners;
+  BuildContext? context;
+  bool showProgressHUD = false;
+
+  bool initialPage = true;
+
+  /// 判断页面是否被销毁
+  bool disposed = false;
+
+  dismissKeyboard(BuildContext? context) {
+    if (context == null) {
+      return;
+    }
+    FocusScope.of(context).requestFocus(FocusNode());
+  }
+
+  showLoadingHud() {
+    showProgressHUD = true;
+    notifyListeners();
+  }
+
+  dismissLoadingHud() {
+    showProgressHUD = false;
+    notifyListeners();
+  }
+
+  @override
+  void notifyListeners() {
+    if (!hasListeners) {
+      return;
+    }
+    if (disposed) {
+      return;
+    }
+    super.notifyListeners();
+  }
+
+  @override
+  void dispose() {
+    disposed = true;
+    super.dispose();
+  }
+}