無法洗掉除錯顯示檢查橫幅-有解無憂

我使用debugShowCheckedModeBanner: false,代碼洗掉了除錯橫幅，它在我以前的所有應用程式中都運行良好。但是現在當我使用這段代碼時，只有除錯橫幅下的陰影會被洗掉。這是我的代碼

  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: HomeScreen(),
    );
  }
}

我附上了以下的圖片debugShowCheckedModeBanner: false,鏈接debugShowCheckedModeBanner: true,。

我怎樣才能完全洗掉這個除錯橫幅，請幫忙！

uj5u.com熱心網友回復：

試試下面的代碼希望它對你有幫助。

MaterialApp從HomeScreen類中洗掉小部件

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        body: Center(
          child: HomeScreen(),
        ),
      ),
    );
  }
}

class HomeScreen extends StatelessWidget {
  const HomeScreen({Key? key}) : super(key: key);
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('E Com App'),
      ),
      body: Container(
        color: Colors.red,
        height: 200,
        width: double.infinity,
        child: Text(
          'Red Container',
          style: TextStyle(
            fontSize: 30,
            color: Colors.white,
          ),
        ),
      ),
    );
  }
}

您的結果螢屏-> 無法洗掉除錯顯示檢查橫幅

如果您想在課堂上使用MaterialAppWidget，請在.HomeScreenMaterialAppHomeScreen Class

 debugShowCheckedModeBanner: false,

完整的小部件：

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        body: Center(
          child: HomeScreen(),
        ),
      ),
    );
  }
}

class HomeScreen extends StatelessWidget {
  const HomeScreen({Key? key}) : super(key: key);
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        appBar: AppBar(
          title: Text('E Com App'),
        ),
        body: Container(
          color: Colors.red,
          height: 200,
          width: double.infinity,
          child: Text(
            'Red Container',
            style: TextStyle(fontSize: 30, color: Colors.white),
          ),
        ),
      ),
    );
  }
}

uj5u.com熱心網友回復：

    import 'package:flutter/material.dart';
    
    void main() {
      runApp(MyApp());
    }
    
    class MyApp extends StatelessWidget {
      @override
      Widget build(BuildContext context) {
        return MaterialApp(
//this code add it 
          debugShowCheckedModeBanner: false,
          home: Scaffold(
            body: Center(
              child: HomeScreen(),
            ),
          ),
        );
      }
    }

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