update version

lib/main.dart

@@ -16,14 +16,20 @@ SpUtil sp;
 var db;
 
 class MyApp extends StatelessWidget {
-  MyApp()  {
+  MyApp() {
     final router = new Router();
 
     Routes.configureRoutes(router);
 
     Application.router = router;
   }
-  showWelcomePage() {
+
+  showWelcomePage(context) {
+    //网络请求查看版本
+
+
+    final platform = Theme.of(context).platform;
+    print("platform:${platform}");
     // 暂时关掉欢迎介绍
     return AppPage();
 //    bool showWelcome = sp.getBool(SharedPreferencesKeys.showWelcome);
@@ -33,6 +39,7 @@ class MyApp extends StatelessWidget {
 //      return AppPage();
 //    }
   }
+
   @override
   Widget build(BuildContext context) {
     return new MaterialApp(
@@ -50,17 +57,15 @@ class MyApp extends StatelessWidget {
           size: 35.0,
         ),
       ),
-      home: new Scaffold(
-        body: showWelcomePage()
-      ),
-      debugShowCheckedModeBanner: false,
+      home: new Scaffold(body: showWelcomePage(context)),
+      //debug  banner
+//      debugShowCheckedModeBanner: false,
       onGenerateRoute: Application.router.generator,
       navigatorObservers: <NavigatorObserver>[Analytics.observer],
     );
   }
 }
 
-
 void main() async {
   final provider = new Provider();
   await provider.init(true);

lib/views/update_test.dart

@@ -9,6 +9,7 @@ import 'package:flutter_downloader/flutter_downloader.dart';
 import 'package:path_provider/path_provider.dart';
 import 'package:permission_handler/permission_handler.dart';
 import 'package:open_file/open_file.dart';
+import 'package:url_launcher/url_launcher.dart';
 
 class UpdatePage extends StatefulWidget {
   @override
@@ -16,6 +17,9 @@ class UpdatePage extends StatefulWidget {
 }
 
 class _UpdatePageState extends State<UpdatePage> {
+  static const currUrl =
+      'https://github.com/alibaba/flutter-go/raw/master/FlutterGo.apk';
+
   @override
   void initState() {
     super.initState();
@@ -27,10 +31,8 @@ class _UpdatePageState extends State<UpdatePage> {
           "id:${id}===== status=======:${status}=====progress======:${progress}");
       // 当下载完成时，调用安装
       if (status == DownloadTaskStatus.complete) {
-
         OpenFile.open(_localPath);
         FlutterDownloader.open(taskId: id);
-
       }
     });
     _permissisonReady = false;
@@ -80,10 +82,31 @@ class _UpdatePageState extends State<UpdatePage> {
             color: Colors.red[800],
           ),
         ),
+        Center(
+          child: FlatButton(
+            onPressed: () {
+              print("local===: _UpdateURL");
+              _UpdateURL();
+            },
+            child: Text(
+              "更新版本",
+              style: TextStyle(color: Colors.white),
+            ),
+            color: Colors.red[800],
+          ),
+        ),
       ],
     );
   }
 
+  _UpdateURL() async {
+    if (await canLaunch(currUrl)) {
+      await launch(currUrl);
+    } else {
+      throw 'Could not launch $currUrl';
+    }
+  }
+
   Future<Null> _prepare() async {
     _permissisonReady = await _checkPermission();
   }
@@ -112,7 +135,8 @@ class _UpdatePageState extends State<UpdatePage> {
   void _requestDownload() async {
     final path = await _apkLocalPath;
     final taskId = await FlutterDownloader.enqueue(
-      url: 'https://github.com/alibaba/flutter-go/raw/master/FlutterGo.apk',
+      url: currUrl,
+      fileName: "new_FlutterGo.apk",
       savedDir: path,
       showNotification: true,
       // show download progress in status bar (for Android)
@@ -121,15 +145,12 @@ class _UpdatePageState extends State<UpdatePage> {
     );
   }
 
-  Future _findLocalPath() async {
-    final directory = Theme.of(context).platform == TargetPlatform.android
-        ? await getExternalStorageDirectory()
-        : await getApplicationDocumentsDirectory();
-    return directory.path;
-  }
-
   // 获取安装地址
   Future<String> get _apkLocalPath async {
+//    final directory = widget.platform == TargetPlatform.android
+//        ? await getExternalStorageDirectory()
+//        : await getApplicationDocumentsDirectory();
+
     final directory = await getExternalStorageDirectory();
     _localPath = directory.path.toString();
     return _localPath;