直接干掉定位获取，真麻烦！

lib/widgets/net_loading_widget.dart

@@ -1,30 +1,38 @@
+import 'package:dio/dio.dart';
 import 'package:flutter/material.dart';
 import 'package:todo_list/i10n/localization_intl.dart';
 
 import 'loading_widget.dart';
 
 class NetLoadingWidget extends StatefulWidget {
-
   final LoadingController loadingController;
   final Widget successWidget;
+  final String loadingText;
+  final String errorText;
+  final String successText;
+  final String emptyText;
+  final String idleText;
+  final VoidCallback onRequest;
+  final VoidCallback onSuccess;
+  final CancelToken cancelToken;
 
-  const NetLoadingWidget({Key key, this.loadingController, this.successWidget,}) : super(key: key);
+  const NetLoadingWidget({
+    Key key,
+    this.loadingController,
+    this.successWidget, this.loadingText, this.errorText, this.successText, this.emptyText, this.idleText, this.onRequest, this.cancelToken, this.onSuccess,
+  }) : super(key: key);
 
   @override
   _NetLoadingWidgetState createState() => _NetLoadingWidgetState();
 }
 
 class _NetLoadingWidgetState extends State<NetLoadingWidget> {
-
-
   LoadingFlag loadingFlag = LoadingFlag.loading;
 
   @override
   Widget build(BuildContext context) {
-
     final size = MediaQuery.of(context).size;
 
-
     return Scaffold(
       backgroundColor: Colors.black.withOpacity(0.3),
       body: Container(
@@ -41,7 +49,31 @@ class _NetLoadingWidgetState extends State<NetLoadingWidget> {
             child: LoadingWidget(
               flag: loadingFlag,
               loadingText: getLoadingText(),
-              successWidget: widget.successWidget,
+              successWidget: widget.successWidget ?? Column(
+                mainAxisAlignment: MainAxisAlignment.spaceAround,
+                children: <Widget>[
+                  Column(
+                    children: <Widget>[
+                      Text(
+                        widget.successText,
+                        style: TextStyle(fontSize: 30),
+                      ),
+                    ],
+                  ),
+                  FlatButton(
+                    color: Theme.of(context).primaryColor,
+                    highlightColor: Theme.of(context).primaryColorLight,
+                    colorBrightness: Brightness.dark,
+                    splashColor: Theme.of(context).primaryColorDark,
+                    shape: RoundedRectangleBorder(
+                        borderRadius: BorderRadius.circular(20.0)),
+                    onPressed: widget.onSuccess ?? (){},
+                    child: Text(DemoLocalizations.of(context).ok),
+                  )
+                ],
+              ),
+              errorCallBack: widget.onRequest ?? (){},
+              errorText: getLoadingText(),
             ),
           ),
         ),
@@ -49,58 +81,62 @@ class _NetLoadingWidgetState extends State<NetLoadingWidget> {
     );
   }
 
-
   @override
   void initState() {
     super.initState();
     widget?.loadingController?._setState(this);
+    if(widget.onRequest != null){
+      widget.onRequest();
+    }
+  }
+
+
+  @override
+  void dispose() {
+    widget?.cancelToken?.cancel();
+    super.dispose();
   }
 
   String getLoadingText() {
     switch (loadingFlag) {
       case LoadingFlag.loading:
-        return DemoLocalizations.of(context).waitAMoment;
+        return widget.loadingText ?? DemoLocalizations.of(context).waitAMoment;
         break;
       case LoadingFlag.error:
-        return DemoLocalizations.of(context).submitAgain;
+        return widget.emptyText ?? DemoLocalizations.of(context).submitAgain;
         break;
       case LoadingFlag.success:
-        return DemoLocalizations.of(context).submitSuccess;
+        return widget.successText ?? DemoLocalizations.of(context).submitSuccess;
         break;
       case LoadingFlag.empty:
-        return "";
+        return widget.emptyText ??  "";
         break;
       case LoadingFlag.idle:
-        return "";
+        return widget.idleText ?? "";
         break;
     }
   }
 }
 
-
 //这里面的state没有去执行dispose，不知道会不会内存泄漏
-class LoadingController{
-
-
+class LoadingController {
   _NetLoadingWidgetState _state;
 
-  void setFlag(LoadingFlag loadingFlag){
+  void setFlag(LoadingFlag loadingFlag) {
     _state?.loadingFlag = loadingFlag;
-    if(_state.mounted){
-      _state?.setState((){});
+    if (_state?.mounted ?? false) {
+      _state?.setState(() {});
     }
     print("设置:${_state?.loadingFlag}");
   }
 
-
-  void _setState(_NetLoadingWidgetState state){
-    if(this?._state == null){
+  void _setState(_NetLoadingWidgetState state) {
+    if (this?._state == null) {
       this?._state = state;
     } else {
       this._state = null;
       this._state = state;
     }
+    print("设置了:${this._state}");
   }
-
-
-}
+}