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Flutter Dialog、BottomSheet

news 2025/8/12 7:08:16

属性	说明
title	标题
content	内容
actions	按钮
applicationName	说明文字
applicationVersion	版本
applicationLegalese	版本

基本使用

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class MyState extends State {AlertDialog delDialog(BuildContext context) {AlertDialog alertDialog = AlertDialog(title: Text("提示"),content: Text("确定要删除吗？"),actions: [TextButton(onPressed: () => Navigator.pop(context), child: Text("取消")),TextButton(onPressed: () => Navigator.pop(context), child: Text("确定")),],);return alertDialog;}@overrideWidget build(BuildContext context) {return Scaffold(appBar: AppBar(title: Text(""), centerTitle: true),body: Column(crossAxisAlignment: CrossAxisAlignment.start,children: [OutlinedButton(onPressed: () {showDialog(context: context,builder: (context) {return delDialog(context);},);},child: Text("弹窗"),),],),);}
}

SimpleDialog

提供多个选项供用户选择
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  SimpleDialog dialog2() {SimpleDialog simpleDialog = SimpleDialog(title: Text("选择颜色"),children: [SimpleDialogOption(onPressed: () => Navigator.pop(context, "Red"),child: Text("红色"),),SimpleDialogOption(onPressed: () => Navigator.pop(context, "Blue"),child: Text("蓝色"),),],);return simpleDialog;}

AboutDialog

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  AboutDialog dialog3() {AboutDialog aboutDialog = AboutDialog(applicationName: "关于",applicationVersion: "1.0.0",applicationLegalese: "© 2023 Flutter",);return aboutDialog;}

底部弹窗BottomSheet

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class MyState extends State {@overrideWidget build(BuildContext context) {Widget widget = Column(children: [ListTile(title: Text("橘子"), onTap: () {}),ListTile(title: Text("西瓜"), onTap: () {}),ListTile(title: Text("苹果"), onTap: () {}),ListTile(title: Text("香蕉"), onTap: () {}),],);return Scaffold(appBar: AppBar(title: Text(""), centerTitle: true),body: Column(crossAxisAlignment: CrossAxisAlignment.start,children: [OutlinedButton(onPressed: () {showModalBottomSheet(context: context,builder: (context) {return widget;},);},child: Text("弹窗"),),],),);}
}