flutter dialog
2024-10-07 03:59:27
flutter Dialog
import 'dart:math';
import 'package:flutter/material.dart';
import 'test.dart';
import 'package:flutter/cupertino.dart';
class HomePage extends StatelessWidget {
var selectedIndex = 0;
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Dialog'),
),
body: Builder(builder: (BuildContext context) {
return Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: <Widget>[
RaisedButton(
child: Text('SimpleDialog'),
onPressed: () {
_showSimpleDialog(context);
},
),
RaisedButton(
child: Text('AlertDialog'),
onPressed: () {
_showAlertDialog(context);
},
),
RaisedButton(
child: Text('CupertinoAlertDialog'),
onPressed: () {
_showCupertinoAlertDialog(context);
},
),
RaisedButton(
child: Text('CustomDialog'),
onPressed: () {
_showCustomDialog(context);
},
),
RaisedButton(
child: Text('bottomSheet'),
onPressed: () {
_showBottomView(context);
},
),
RaisedButton(
child: Text('bottomSelectSheet'),
onPressed: () {
_showSelectionDialog(context);
},
),
],
),
);
}));
}
void _showBottomView(BuildContext context) {
var datas = List.generate(20, (index) {
return 'datas$index';
});
showModalBottomSheet(
context: context,
isScrollControlled: false,
builder: (ctx) {
return Container(
height: 200,
color: Colors.white,
child: Column(
children: <Widget>[
Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
FlatButton(
child: Text('取消'),
onPressed: () {
Navigator.pop(context);
},
),
FlatButton(
child: Text('确定'),
splashColor: Colors.grey,
highlightColor: Colors.white,
onPressed: () {
Navigator.pop(context);
print('selectedIndex:$selectedIndex' +
'data:${datas[selectedIndex]}');
},
),
],
),
Expanded(
child: CupertinoPicker(
children: datas.map((item) {
return Text(item);
}).toList(),
onSelectedItemChanged: (index) {
print('$index');
selectedIndex = index;
},
itemExtent: 36,
),
)
],
),
);
},
);
}
void _showSimpleDialog(BuildContext context) {
showDialog(
context: context,
// barrierDismissible: false,
builder: (ctx) {
return SimpleDialog(
// title: Text('SimpleDialog',textAlign: TextAlign.center,),
// titlePadding: EdgeInsets.all(10),
backgroundColor: Colors.amber,
elevation: 5,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.all(
Radius.circular(6),
),
),
contentPadding: EdgeInsets.all(0),
children: <Widget>[
GestureDetector(
child: Image.asset(
'assets/123.jpg',
fit: BoxFit.cover,
// height: 400,
// width: 400,
),
onTap: () {
//先关闭弹窗
Navigator.pop(context);
//跳转到下一页
Navigator.push(
context,
MaterialPageRoute(builder: (context) => TestPage()),
);
},
)
// ListTile(
// title: Center(
// child: Text("Item_1"),
// ),
// ),
// ListTile(
// title: Center(
// child: Text("Item_2"),
// ),
// ),
// ListTile(
// title: Center(
// child: Text("Item_3"),
// ),
// ),
// ListTile(
// title: Center(
// child: Text("Close"),
// ),
// onTap: () {
// Navigator.pop(context);
// },
// ),
],
);
},
);
}
void _showAlertDialog(BuildContext context) {
showDialog(
context: context,
barrierDismissible: true,
builder: (ctx) {
return AlertDialog(
title: Text(
'data',
textAlign: TextAlign.center,
),
content: Text(
'datadatadatadatadatasdadadatadatadatadatadatadatadatadatadatadatadatadata'),
elevation: 5,
actions: <Widget>[
Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: <Widget>[
FlatButton(
child: Text('确定'),
onPressed: () {},
),
FlatButton(
child: Text('取消'),
onPressed: () {
Navigator.pop(context);
},
),
],
),
],
);
},
);
}
void _showCupertinoAlertDialog(BuildContext context) {
showDialog(
context: context,
barrierDismissible: true,
builder: (ctx) {
return CupertinoAlertDialog(
title: Text(
'data',
textAlign: TextAlign.center,
),
content: Text(
'datadatadatadatadatasdadadatadatadatadatadatadatadatadatadatadatadatadata'),
// elevation: 5,
actions: <Widget>[
// Row(
// mainAxisAlignment: MainAxisAlignment.spaceEvenly,
// children: <Widget>[
FlatButton(
child: Text('确定'),
onPressed: () {},
),
FlatButton(
child: Text('取消'),
onPressed: () {
Navigator.pop(context);
},
// ),
// ],
)
],
);
},
);
}
void _showCustomDialog(BuildContext context) {
showDialog(
context: context,
barrierDismissible: true,
builder: (ctx) {
return CustomDialog();
},
);
}
void _showSelectionDialog(BuildContext context) {
showModalBottomSheet(
context: context,
isScrollControlled: false,
builder: (ctx) {
return Container(
color: Colors.grey,
height: 130,
child: Column(
crossAxisAlignment: CrossAxisAlignment.center,
// mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: <Widget>[
GestureDetector(
child: _itemCreat(context, '相机'),
onTap: (){
print('选中相机');
},
),
GestureDetector(
child: _itemCreat(context, '相册'),
onTap: (){
print('选中相册');
},
),
GestureDetector(
child: Padding(
padding: EdgeInsets.only(top: 10),
child: _itemCreat(context, '取消'),
),
onTap: (){
Navigator.pop(context);
},
)
],
),
);
},
);
}
Widget _itemCreat(BuildContext context, String title) {
return Container(
color: Colors.white,
height: 40,
width: MediaQuery.of(context).size.width,
child: Center(
child: Text(
title,
style: TextStyle(fontSize: 16, color: Colors.black),
textAlign: TextAlign.center,
),
),
);
}
}
class CustomDialog extends Dialog {
CustomDialog({Key key}) : super(key: key);
@override
Widget build(BuildContext context) {
return Center(
child: Container(
color: Colors.white,
height: 365,
padding: EdgeInsets.all(10),
child: Column(
children: <Widget>[
Image.asset(
'assets/123.jpg',
fit: BoxFit.cover,
),
Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
FlatButton(
onPressed: () {
Navigator.pop(context);
},
child: Text('确定'),
),
FlatButton(
onPressed: () {
Navigator.pop(context);
},
child: Text('取消'),
)
],
)
],
),
),
);
}
}
最新文章
- 基于rem的移动端自适应解决方案
- 【python】3.x，string与bytes的区别（文本，二进制数据）
- 【转】一名大学生的PHP进阶之路
- sap后台作业管理/sap打印管理
- C#识别验证码技术-Tesseract
- Node.js学习(10)----文件系统fs
- 17.2?Replication Implementation 复制实施:
- SeekBar 样式设置
- pandas教程1：pandas数据结构入门
- Spring MVC 的文件下载
- Gridview 动态添加行
- MySql基础总结
- axios（封装使用、拦截特定请求、判断所有请求加载完毕）
- mysql判断条件不存在插入存在更新某字段
- 关于为什么会涉足easyui
- LeetCode算法题-N-ary Tree Level Order Traversal（Java实现）
- 【原创】运维基础之OpenResty
- 判断URL是否能被链接
- hdu some problems in Multi-University Training Contest
- 架构探险笔记4-使框架具备AOP特性（上）