forked from lxm_flutter/FlutterUnit
105 lines
2.4 KiB
Dart
105 lines
2.4 KiB
Dart
import 'package:flutter/material.dart';
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// {
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// "widgetId": 97,
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// "name": 'Stack基本使用',
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// "priority": 1,
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// "subtitle":
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// "【children】 : 组件列表 【List<Widget>】\n"
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// "【textDirection】 : 孩子排布方向 【MainAxisAlignment】\n"
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// "【alignment】 : 对齐方式 【AlignmentGeometry】\n"
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// "【overflow】 : 溢出模式 【Overflow】\n"
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// "【fit】 : 适应模式 【StackFit】",
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// }
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class CustomStack extends StatelessWidget {
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@override
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Widget build(BuildContext context) {
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var yellowBox = Container(
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color: Colors.yellow,
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height: 100,
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width: 100,
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);
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var redBox = Container(
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color: Colors.red,
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height: 90,
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width: 90,
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);
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var greenBox = Container(
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color: Colors.green,
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height: 80,
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width: 80,
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);
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var cyanBox = Container(
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color: Colors.cyanAccent,
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height: 70,
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width: 70,
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);
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return Container(
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width: 200,
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height: 120,
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color: Colors.grey.withAlpha(33),
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child: Stack(
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textDirection: TextDirection.rtl,
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fit: StackFit.loose,
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alignment: Alignment.topRight,
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overflow: Overflow.clip,
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children: <Widget>[yellowBox, redBox, greenBox, cyanBox],
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),
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);
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}
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}
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// {
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// "widgetId": 97,
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// "name": 'Stack和Positioned结合使用',
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// "priority": 2,
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// "subtitle":
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// "Positioned组件只能用与Stack中，可以指定左上右下的距离对某个组件进行位置精确安放。",
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// }
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class PositionedStack extends StatelessWidget {
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@override
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Widget build(BuildContext context) {
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var yellowBox = Container(
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color: Colors.yellow,
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height: 100,
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width: 100,
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);
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var redBox = Container(
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color: Colors.red,
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height: 90,
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width: 90,
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);
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var greenBox = Container(
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color: Colors.green,
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height: 80,
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width: 80,
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);
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var cyanBox = Container(
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color: Colors.cyanAccent,
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height: 70,
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width: 70,
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);
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return Container(
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width: 200,
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height: 120,
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color: Colors.grey.withAlpha(33),
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child: Stack(
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children: <Widget>[yellowBox, redBox, greenBox,
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Positioned(
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child: cyanBox,
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bottom: 10,
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right: 10,
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)
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],
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));
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}
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}
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