flutter 应用程序名称在查看打开的应用程序时不显示

Question

i have my application and i have changed its name and its shown correctly but when you see open applications on your phone, the app has no name but when you see its icon in the app list its shown correctly you will get the idea from the pictures

tested on 5 different devices

app icon in app list (shown correctly)

app name while seeing the opened applications

i don't know why this is happening i will share my manifest with you please tell me how to fix this problem

this is the AndroidManifest.xml

    package="com.eco.cat">
    <!-- io.flutter.app.FlutterApplication is an android.app.Application that
         calls FlutterMain.startInitialization(this); in its onCreate method.
         In most cases you can leave this as-is, but you if you want to provide
         additional functionality it is fine to subclass or reimplement
         FlutterApplication and put your custom class here. -->
    <application
        android:name="io.flutter.app.FlutterApplication"
        android:label="EcoCat"
        android:icon="@mipmap/ic_launcher">
        <activity
            android:name=".MainActivity"
            android:launchMode="singleTop"
            android:theme="@style/LaunchTheme"
            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
            android:hardwareAccelerated="true"
            android:windowSoftInputMode="adjustResize">
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>
                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
        </activity>
        <!-- Don't delete the meta-data below.
             This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
        <meta-data
            android:name="flutterEmbedding"
            android:value="2" />
    </application>
    <uses-permission android:name="android.permission.INTERNET"/>
</manifest>

my main.dart

import 'Front-end/home/Companies.dart';
import 'Front-end/search/Search.dart';
import 'Front-end/settings/Settings.dart';
import 'file:///D:/programming/Android_Development/Projects/coupon_app/lib/reusable_widgets/functions/Device_Information.dart';
import 'package:app/reusable_widgets/logic/Check_SiteStatus.dart';
import 'package:app/reusable_widgets/logic/Responsiveness-Controller.dart';
import 'package:curved_navigation_bar/curved_navigation_bar.dart';
import 'package:flutter/material.dart';
import 'package:flutter_phoenix/flutter_phoenix.dart';
import 'package:provider/provider.dart';
import 'Themes/DarkThemeProvider.dart';
import 'Themes/DarkThemeStyle.dart';
import 'package:flutter/services.dart';

    void main() {
      WidgetsFlutterBinding.ensureInitialized();
      SystemChrome.setPreferredOrientations(
    [DeviceOrientation.portraitUp , DeviceOrientation.portraitDown])
      .then((_) => runApp(
    Phoenix(
      child: MyApp(),
     ),
    ),
  );
}

class MyApp extends StatefulWidget {
  // This widget is the root of your application.
  @override
  _MyAppState createState() => _MyAppState();
}


class _MyAppState extends State<MyApp> {
  DarkThemeProvider themeChangeProvider = new DarkThemeProvider();
  @override

  void initState() {
    super.initState();
    getCurrentAppTheme();
  }

  void getCurrentAppTheme() async {
    themeChangeProvider.darkTheme =
    await themeChangeProvider.darkThemePreference.getTheme();
  }

  Widget build(BuildContext context) {
    return
      ChangeNotifierProvider(
        create: (_) {
          return themeChangeProvider;
        },
        child: Consumer<DarkThemeProvider>(
          builder: (BuildContext context, value, Widget child) {
            return MaterialApp(
              debugShowCheckedModeBanner: false,
              theme: Styles.themeData(themeChangeProvider.darkTheme, context),
              home: MyHomePage(),
            );
          },
        ),
      );
  }
}



class MyHomePage extends StatefulWidget {
  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  //bottom navbar items to build body
  int _currentIndex = 1;
  final List<Widget> _children = [
    Search(),
    CompaniesPage(),
    Settings(),
  ];
  @override
  Widget build(BuildContext context) {
    //checks web server status
    checkSiteStatus(context);
    Color themeColor = Theme.of(context).backgroundColor;
    void changePage(int index){
      setState(() {
        _currentIndex = index;
      });
    }
    //setting app name based on current page
    String title = '';
    if(_currentIndex == 0){
      title = 'ابحث باستخدام التصنيفات';
    }else if(_currentIndex == 1){
      title = 'الشركات';
    }else if(_currentIndex == 2){
      title = 'الاعدادات';
    }
    return Scaffold(
      appBar: AppBar(
        // Here we take the value from the MyHomePage object that was created by
        // the App.build method, and use it to set our appbar title.
        bottomOpacity: 0.0,
        elevation: 0.0,
        title: new Center(
          child: Text('$title',
            style: TextStyle(color: Colors.white ,
            fontSize: DeviceInformation(context).width *  ResponsivenessController(context).responsiveFont
            ),
          ),
        ),
      ),
      body: _children[_currentIndex],
      bottomNavigationBar: CurvedNavigationBar(
        index: _currentIndex,
        color: themeColor,
        backgroundColor: Colors.cyan,
        height: 75.0,
        items:<Widget>[
          Icon(Icons.search, size: DeviceInformation(context).height * ResponsivenessController(context).responsiveNavIcons),
          Icon(Icons.home, size: DeviceInformation(context).height * ResponsivenessController(context).responsiveNavIcons),
          Icon(Icons.settings, size: DeviceInformation(context).height * ResponsivenessController(context).responsiveNavIcons),
        ],
        onTap: changePage,
      ),
    );
  }
}

Answer 1

MaterialApp is the entry point for a Flutter app using Material design, thus it should only be declared once in the MyApp widget. Docs for it ishere .

As explained in the docs, thetitle property of the MaterialApp is the one that when seeing the opened Applications. The android:label in the AndroidManifest is the title that is shown on home screen.

You should set the title using the following code

return MaterialApp(
  debugShowCheckedModeBanner: false,
  theme: Styles.themeData(themeChangeProvider.darkTheme, context),
  home: MyHomePage(),
  title: "EcoCat",
);

Answer 2

use MaterialApp and set title for that. like this:

import 'package:flutter/material.dart';

main() => runApp(new MyApp());

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Your_App_Name',
      home: DashboardPage(),
    );
  }
}

Answer 3

Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("Home sweet home"),
        ),
      body: Home(),
      );

you better check the appbar whether you already have a title or not. and may be the title will be also missing from the main.dart