flutter 交互之IgnorePointer

最新推荐文章于 2024-05-26 22:38:23 发布

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最新推荐文章于 2024-05-26 22:38:23 发布 · 466 阅读

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这篇博客展示了如何在Flutter中使用IgnorePointer widget来控制子组件是否可以被触碰。通过设置ignoring属性为true或false，可以实现对Column内按钮的触摸事件启用或禁用。当ignoring为false时，Column内的元素可以响应点击；反之，则无法响应。

/// Flutter code sample for IgnorePointer

// The following sample has an [IgnorePointer] widget wrapping the `Column`
// which contains a button.
// When [ignoring] is set to `true` anything inside the `Column` can
// not be tapped. When [ignoring] is set to `false` anything
// inside the `Column` can be tapped.

import 'package:flutter/material.dart';

void main() => runApp(const MyApp());

/// This is the main application widget.
class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  static const String _title = 'Flutter Code Sample';

  @override
  Widget build(BuildContext context) {
    return const MaterialApp(
      title: _title,
      home: MyStatefulWidget(),
    );
  }
}

/// This is the stateful widget that the main application instantiates.
class MyStatefulWidget extends StatefulWidget {
  const MyStatefulWidget({Key? key}) : super(key: key);

  @override
  _MyStatefulWidgetState createState() => _MySta