释放应用程序时导航不起作用

如何解决释放应用程序时导航不起作用

我想从登录屏幕导航到主屏幕，进入我的flutter应用程序。在模拟器或虚拟设备上测试我的应用程序时，它运行良好，但是在创建构建版本apk时，无法导航到Home。在注册或登录页面上，导航不起作用。 我的主文件是：

 void main() async {
     WidgetsFlutterBinding.ensureInitialized();
     SharedPreferences prefs = await SharedPreferences.getInstance();
      String isLogin = prefs.getString('navigateToHome');
      prefs.setString('is_mechanic','1');
      Widget _defaultHome = new LoginUI();
      // isLogin = 'false';
      if (isLogin == 'true') {
        //If the user is an loggedin
        print('home page');
        _defaultHome = new Home();
      } else {
        // If the user is not  loggedin
        print('LoginUI page');
        _defaultHome = new LoginUI();
        
      }
      runApp(MaterialApp(
        title: 'Navigation Basics',//navigateToHome
        // home: FirstRoute(),//android device
        home: _defaultHome,debugShowCheckedModeBanner: false,theme: ThemeData(
          primaryColor: Colors.black,),)
      );
    }

我要从中导航到主页的登录/注册页面：

Future<loginModel> signUpUserOrMechanic(String email,String pass,String cellPhone,String name,String workshop) async {
      final prefs = await SharedPreferences.getInstance();
      var userOrMechanic = prefs.getString('is_mechanic');
      var nick = name.substring(0,2);
      var uri = new Uri.http(url,"/API/Signup/get",{
        "Email": email,"Password": pass,"PhoneNumber": cellPhone,"ismechanic": userOrMechanic,"Name": name,"WorkshopAddress": workshop,"NickName": nick,"Latitude": '',"Longitude": '',"WorkshopName": '',});
      
      final response = await http.get(uri);
      if (response.statusCode == 200) {
        final jsonObj = jsonDecode(response.body);
        var responseObject = jsonDecode(response.body);
        var user = loginModel.fromJson(responseObject);
    // print('${user.clientOrMechanic} is ${user.alias}');
        // print('${user.clientOrMechanic} is awesome');
        prefs.setString('phone_no',cellPhone);
        if (user.clientOrMechanic == "Already Registered") {
          Utility.getInstance().showAlertDialog(
              navigatorKey.currentState.overlay.context,'System Alert!','You are already registered.Thanks!');
    
        } else if (user.clientOrMechanic == "Registration Successful") {
          prefs.setString('navigateToHome','true');
          navigatorKey.currentState.push(MaterialPageRoute(
            builder: (context) => Home(),));
          // Get.to(Home());
        } else {
    
          Utility.getInstance().showAlertDialog(
              navigatorKey.currentState.overlay.context,'Error!','Failed to Register. Please try again or contact to support. Thanks!');
    
        }
    
        return loginModel.fromJson(json.decode(response.body));
      } else {
        // If the server did not return a 201 CREATED response,// then throw an exception.
        Utility.getInstance().showAlertDialog(
            navigatorKey.currentState.overlay.context,'Failed to Register.Please try again.Thanks!');
        throw Exception('Failed to login.');
      }
    }

有帮助吗？

解决方法

enter image description here

1. 您是否在应用中授予了访问互联网的权限？