forked from lxm_flutter/FlutterUnit
46 lines
1.5 KiB
Dart
46 lines
1.5 KiB
Dart
import 'package:flutter/material.dart';
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/// create by 张风捷特烈 on 2020/4/27
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/// contact me by email 1981462002@qq.com
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/// 说明:
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// {
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// "widgetId": 146,
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// "name": 'GestureDetector详情信息',
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// "priority": 2,
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// "subtitle":
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// "【onTapDown】 : 按下回调 【GestureTapDownCallback】\n"
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// "【onTapUp】 : 点击抬起回调 【GestureTapUpCallback】\n"
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// "【onTapCancel】 : 点击取消 【GestureTapCancelCallback】",
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// }
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class TapGestureDetector extends StatefulWidget {
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const TapGestureDetector({Key? key}) : super(key: key);
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@override
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_TapGestureDetectorState createState() => _TapGestureDetectorState();
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}
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class _TapGestureDetectorState extends State<TapGestureDetector> {
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String _info = '';
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@override
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Widget build(BuildContext context) {
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return GestureDetector(
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onTapDown: (detail) => setState(() => _info =
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'onTapDown:\n相对落点:${detail.localPosition}\n绝对落点:${detail.globalPosition}'),
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onTapUp: (detail) => setState(() => _info =
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'onTapUp:\n相对落点:${detail.localPosition}\n绝对落点:${detail.globalPosition}'),
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onTapCancel: () => setState(() => _info = 'onTapCancel'),
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child: Container(
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alignment: Alignment.center,
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width: 300,
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height: 300 * 0.618,
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color: Colors.grey.withAlpha(33),
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child: Text(
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_info,
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style: const TextStyle(fontSize: 18, color: Colors.blue),
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),
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),
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);
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}
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} |