查看打开的应用程序时，flutter 应用程序名称不显示

Question

我有我的应用程序，我已经更改了它的名称并且显示正确，但是当您在手机上看到打开的应用程序时，该应用程序没有名称，但是当您在应用程序列表中看到它的图标时，它显示正确，您将从图片中得到想法

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在 5 种不同的设备上进行了测试

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应用程序列表中的应用程序图标（正确显示）

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查看打开的应用程序时的应用程序名称

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我不知道为什么会发生这种情况，我将与您分享我的清单，请告诉我如何解决此问题

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这是 AndroidManifest.xml

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

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我的 main.dart

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import \'Front-end/home/Companies.dart\';\nimport \'Front-end/search/Search.dart\';\nimport \'Front-end/settings/Settings.dart\';\nimport \'file:///D:/programming/Android_Development/Projects/coupon_app/lib/reusable_widgets/functions/Device_Information.dart\';\nimport \'package:app/reusable_widgets/logic/Check_SiteStatus.dart\';\nimport \'package:app/reusable_widgets/logic/Responsiveness-Controller.dart\';\nimport \'package:curved_navigation_bar/curved_navigation_bar.dart\';\nimport \'package:flutter/material.dart\';\nimport \'package:flutter_phoenix/flutter_phoenix.dart\';\nimport \'package:provider/provider.dart\';\nimport \'Themes/DarkThemeProvider.dart\';\nimport \'Themes/DarkThemeStyle.dart\';\nimport \'package:flutter/services.dart\';\n\n    void main() {\n      WidgetsFlutterBinding.ensureInitialized();\n      SystemChrome.setPreferredOrientations(\n    [DeviceOrientation.portraitUp , DeviceOrientation.portraitDown])\n      .then((_) => runApp(\n    Phoenix(\n      child: MyApp(),\n     ),\n    ),\n  );\n}\n\nclass MyApp extends StatefulWidget {\n  // This widget is the root of your application.\n  @override\n  _MyAppState createState() => _MyAppState();\n}\n\n\nclass _MyAppState extends State<MyApp> {\n  DarkThemeProvider themeChangeProvider = new DarkThemeProvider();\n  @override\n\n  void initState() {\n    super.initState();\n    getCurrentAppTheme();\n  }\n\n  void getCurrentAppTheme() async {\n    themeChangeProvider.darkTheme =\n    await themeChangeProvider.darkThemePreference.getTheme();\n  }\n\n  Widget build(BuildContext context) {\n    return\n      ChangeNotifierProvider(\n        create: (_) {\n          return themeChangeProvider;\n        },\n        child: Consumer<DarkThemeProvider>(\n          builder: (BuildContext context, value, Widget child) {\n            return MaterialApp(\n              debugShowCheckedModeBanner: false,\n              theme: Styles.themeData(themeChangeProvider.darkTheme, context),\n              home: MyHomePage(),\n            );\n          },\n        ),\n      );\n  }\n}\n\n\n\nclass MyHomePage extends StatefulWidget {\n  @override\n  _MyHomePageState createState() => _MyHomePageState();\n}\n\nclass _MyHomePageState extends State<MyHomePage> {\n  //bottom navbar items to build body\n  int _currentIndex = 1;\n  final List<Widget> _children = [\n    Search(),\n    CompaniesPage(),\n    Settings(),\n  ];\n  @override\n  Widget build(BuildContext context) {\n    //checks web server status\n    checkSiteStatus(context);\n    Color themeColor = Theme.of(context).backgroundColor;\n    void changePage(int index){\n      setState(() {\n        _currentIndex = index;\n      });\n    }\n    //setting app name based on current page\n    String title = \'\';\n    if(_currentIndex == 0){\n      title = \'\xd8\xa7\xd8\xa8\xd8\xad\xd8\xab \xd8\xa8\xd8\xa7\xd8\xb3\xd8\xaa\xd8\xae\xd8\xaf\xd8\xa7\xd9\x85 \xd8\xa7\xd9\x84\xd8\xaa\xd8\xb5\xd9\x86\xd9\x8a\xd9\x81\xd8\xa7\xd8\xaa\';\n    }else if(_currentIndex == 1){\n      title = \'\xd8\xa7\xd9\x84\xd8\xb4\xd8\xb1\xd9\x83\xd8\xa7\xd8\xaa\';\n    }else if(_currentIndex == 2){\n      title = \'\xd8\xa7\xd9\x84\xd8\xa7\xd8\xb9\xd8\xaf\xd8\xa7\xd8\xaf\xd8\xa7\xd8\xaa\';\n    }\n    return Scaffold(\n      appBar: AppBar(\n        // Here we take the value from the MyHomePage object that was created by\n        // the App.build method, and use it to set our appbar title.\n        bottomOpacity: 0.0,\n        elevation: 0.0,\n        title: new Center(\n          child: Text(\'$title\',\n            style: TextStyle(color: Colors.white ,\n            fontSize: DeviceInformation(context).width *  ResponsivenessController(context).responsiveFont\n            ),\n          ),\n        ),\n      ),\n      body: _children[_currentIndex],\n      bottomNavigationBar: CurvedNavigationBar(\n        index: _currentIndex,\n        color: themeColor,\n        backgroundColor: Colors.cyan,\n        height: 75.0,\n        items:<Widget>[\n          Icon(Icons.search, size: DeviceInformation(context).height * ResponsivenessController(context).responsiveNavIcons),\n          Icon(Icons.home, size: DeviceInformation(context).height * ResponsivenessController(context).responsiveNavIcons),\n          Icon(Icons.settings, size: DeviceInformation(context).height * ResponsivenessController(context).responsiveNavIcons),\n        ],\n        onTap: changePage,\n      ),\n    );\n  }\n}\n

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Answer 1

MaterialApp是使用 Material Design 的 Flutter 应用程序的入口点，因此它只能在MyApp小部件中声明一次。它的文档在这里。

正如文档中所解释的， MaterialApp 的title属性是看到打开的应用程序时的属性。AndroidManifest 中的android:label是显示在主屏幕上的标题。

您应该使用以下代码设置标题

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