如何禁用手机后按功能 [英] how to disable phone back press in flutter

问题描述

我是Flutter开发的新手。有人可以分享我如何在 flutter 中禁用后按吗？

I am new to Flutter development. Can anyone share me how to disable the back press in flutter?

在Android中，我们可以使用 onbackpressed 方法。

In Android, we can use onbackpressed method.

@Override
public void onBackPressed() {
  // super.onBackPressed(); commented this line in order to disable back press
  //Write your code here
  Toast.makeText(getApplicationContext(), "Back press disabled!", Toast.LENGTH_SHORT).show();
}

在 flutter 中

推荐答案

将小部件包装在 WillPopScope 中并返回 onWillPop 属性中错误的未来

Wrap your widget inside WillPopScope and return a false Future in the onWillPop property

    @override
    Widget build(BuildContext context) {
      return WillPopScope(
        onWillPop: () => Future.value(false),
        child: Scaffold(
          appBar: AppBar(
            title: const Text("Home Page"),
          ),
          body: Center(
            child: const Text("Home Page"),
          ),
        ),
      );
    }

请参阅此文档： https://api.flutter.dev/flutter/widgets/WillPopScope-class.html

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