forked from lxm_flutter/FlutterUnit
70 lines
2.0 KiB
Dart
70 lines
2.0 KiB
Dart
import 'package:flutter/material.dart';
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/// create by 张风捷特烈 on 2020-03-20
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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": 100,
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// "name": 'AnimatedCrossFade基本使用',
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// "priority": 1,
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// "subtitle":
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// "【firstChild】 : 第一孩子 【Widget】\n"
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// "【secondChild】 : 第二孩子 【Widget】\n"
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// "【crossFadeState】 : 显示第几个 【CrossFadeState】\n"
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// "【duration】 : 时长 【Duration】",
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// }
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class CustomAnimatedCrossFade extends StatefulWidget {
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const CustomAnimatedCrossFade({Key? key}) : super(key: key);
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@override
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_CustomAnimatedCrossFadeState createState() =>
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_CustomAnimatedCrossFadeState();
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}
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class _CustomAnimatedCrossFadeState extends State<CustomAnimatedCrossFade> {
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CrossFadeState _crossFadeState = CrossFadeState.showFirst;
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bool get isFirst => _crossFadeState == CrossFadeState.showFirst;
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@override
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Widget build(BuildContext context) {
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return Wrap(
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children: <Widget>[
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AnimatedCrossFade(
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firstChild: Container(
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alignment: Alignment.center,
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width: 200,
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height: 150,
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color: Colors.orange,
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child: const FlutterLogo(textColor: Colors.blue, size: 100,),
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),
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secondChild: Container(
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width: 200,
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height: 150,
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alignment: Alignment.center,
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color: Colors.blue,
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child: const FlutterLogo(
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textColor: Colors.white,
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// colors: Colors.orange,
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size: 100,
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style: FlutterLogoStyle.stacked,),
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),
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duration: const Duration(milliseconds: 600),
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crossFadeState: _crossFadeState,
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),
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_buildSwitch(),
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],
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);
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}
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Widget _buildSwitch() =>
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Switch(value: isFirst, onChanged: (v) {
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setState(() {
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_crossFadeState =
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v ? CrossFadeState.showFirst : CrossFadeState.showSecond;
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});
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});
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} |