forked from lxm_flutter/FlutterUnit
95 lines
2.5 KiB
Dart
95 lines
2.5 KiB
Dart
import 'package:flutter/material.dart';
|
|
|
|
/// create by 张风捷特烈 on 2020-03-29
|
|
/// contact me by email 1981462002@qq.com
|
|
/// 说明:
|
|
|
|
|
|
// {
|
|
// "widgetId": 176,
|
|
// "name": 'Dismissible基本使用',
|
|
// "priority": 1,
|
|
// "subtitle":
|
|
// "【child】 : 子组件 【Widget】\n"
|
|
// "【background】 : 左底 【Widget】\n"
|
|
// "【secondaryBackground】 : 右底 【Widget】\n"
|
|
// "【key】 : 键 【Key】\n"
|
|
// "【confirmDismiss】 : 确认回调 【DismissDirectionCallback】\n"
|
|
// "【onDismissed】 : 消失回调 【DismissDirectionCallback】\n",
|
|
// }
|
|
class CustomDismissible extends StatefulWidget {
|
|
@override
|
|
_CustomDismissibleState createState() => _CustomDismissibleState();
|
|
}
|
|
|
|
class _CustomDismissibleState extends State<CustomDismissible> {
|
|
var data = <Color>[
|
|
Colors.purple[50],
|
|
Colors.purple[100],
|
|
Colors.purple[200],
|
|
Colors.purple[300],
|
|
Colors.purple[400],
|
|
Colors.purple[500],
|
|
Colors.purple[600],
|
|
Colors.purple[700],
|
|
Colors.purple[800],
|
|
Colors.purple[900],
|
|
];
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return Container(
|
|
height: 200,
|
|
child: ListView(
|
|
padding: EdgeInsets.symmetric(horizontal: 5),
|
|
children: data.map((color) => _buildItem(color)).toList(),
|
|
),
|
|
);
|
|
}
|
|
|
|
Widget _buildItem(Color color) {
|
|
return Dismissible(
|
|
background: Container(
|
|
color: Colors.green,
|
|
alignment: Alignment(-0.9, 0),
|
|
child: Icon(
|
|
Icons.check,
|
|
color: Colors.white,
|
|
),
|
|
),
|
|
secondaryBackground: Container(
|
|
alignment: Alignment(0.9, 0),
|
|
child: Icon(
|
|
Icons.close,
|
|
color: Colors.white,
|
|
),
|
|
color: Colors.red,
|
|
),
|
|
key: ValueKey(color),
|
|
onDismissed: (d) {
|
|
data.remove(color);
|
|
},
|
|
confirmDismiss: (e) async {
|
|
if (e == DismissDirection.endToStart) {
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
},
|
|
child: Container(
|
|
alignment: Alignment.center,
|
|
height: 50,
|
|
color: color,
|
|
child: Text(
|
|
colorString(color),
|
|
style: TextStyle(color: Colors.white, shadows: [
|
|
Shadow(color: Colors.black, offset: Offset(.5, .5), blurRadius: 2)
|
|
]),
|
|
),
|
|
),
|
|
);
|
|
}
|
|
|
|
String colorString(Color color) =>
|
|
"#${color.value.toRadixString(16).padLeft(8, '0').toUpperCase()}";
|
|
} |