forked from lxm_flutter/FlutterUnit
59 lines
1.7 KiB
Dart
59 lines
1.7 KiB
Dart
import 'package:flutter/material.dart';
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/// create by 张风捷特烈 on 2020-03-16
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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": 55,
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// "name": 'DropdownButton的样式指定',
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// "priority": 2,
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// "subtitle":
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// "【isDense】 : 是否紧排 【bool】\n"
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// "【iconSize】 : 图标大小 【double】\n"
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// "【hint】 : 提示组件 【Widget】\n"
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// "【iconEnabledColor】 : 图标颜色 【Color】",
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// }
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class StyleDropDownButton extends StatefulWidget {
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@override
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_StyleDropDownButtonState createState() => _StyleDropDownButtonState();
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}
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class _StyleDropDownButtonState extends State<StyleDropDownButton> {
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Color _color = Colors.red ;
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final _colors = [Colors.red, Colors.yellow, Colors.blue, Colors.green];
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final _info = ["红色", "黄色", "蓝色", "绿色"];
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@override
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Widget build(BuildContext context) {
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return Wrap(
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crossAxisAlignment: WrapCrossAlignment.center,
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children: <Widget>[
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Container(
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margin: EdgeInsets.symmetric(horizontal: 20),
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width: 50,
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height: 50,
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color: _color??Colors.transparent,
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),
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DropdownButton<Color>(
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hint: Text('请选择'),
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isDense: true,
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iconSize:20,
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iconEnabledColor:_color??Colors.orange,
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value: _color,
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items: _buildItems(),
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onChanged: (v) => setState(() => _color = v)),
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],
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);
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}
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List<DropdownMenuItem<Color>> _buildItems() => _colors
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.map((e) => DropdownMenuItem<Color>(
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value: e,
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child: Text(
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_info[_colors.indexOf(e)],
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style: TextStyle(color: e),
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)))
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.toList();
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}
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