带有圆角的警报对话框 [英] Alert Dialog with Rounded corners in flutter
问题描述
我正尝试在Flutter中创建一个带有圆角的警报对话框，如下图所示.还要在此处添加我的代码，但是我的输出与预期的完全不同.任何人，请帮助我.
I am trying to create an alert dialog with rounded corners in Flutter same as below screenshot. also add my code here, but my output is exactly different from the expected one. anyone, please help me.
我的代码在这里.
void _showAlert() {
AlertDialog dialog = new AlertDialog(
content: new Container(
width: 260.0,
height: 230.0,
decoration: new BoxDecoration(
shape: BoxShape.rectangle,
color: const Color(0xFFFFFF),
borderRadius: new BorderRadius.all(new Radius.circular(32.0)),
),
child: new Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: <Widget>[
// dialog top
new Expanded(
child: new Row(
children: <Widget>[
new Container(
// padding: new EdgeInsets.all(10.0),
decoration: new BoxDecoration(
color: Colors.white,
),
child: new Text(
'Rate',
style: TextStyle(
color: Colors.black,
fontSize: 18.0,
fontFamily: 'helvetica_neue_light',
),
textAlign: TextAlign.center,
),
),
],
),
),
// dialog centre
new Expanded(
child: new Container(
child: new TextField(
decoration: new InputDecoration(
border: InputBorder.none,
filled: false,
contentPadding: new EdgeInsets.only(
left: 10.0, top: 10.0, bottom: 10.0, right: 10.0),
hintText: ' add review',
hintStyle: new TextStyle(
color: Colors.grey.shade500,
fontSize: 12.0,
fontFamily: 'helvetica_neue_light',
),
),
)),
flex: 2,
),
// dialog bottom
new Expanded(
child: new Container(
padding: new EdgeInsets.all(16.0),
decoration: new BoxDecoration(
color: const Color(0xFF33b17c),
),
child: new Text(
'Rate product',
style: TextStyle(
color: Colors.white,
fontSize: 18.0,
fontFamily: 'helvetica_neue_light',
),
textAlign: TextAlign.center,
),
),
),
],
),
),
);
showDialog(context: context, child: dialog);
}
}
我从上面的代码中获得的输出是.
推荐答案
设置BoxDecoration的容器位于警报对话框下的小部件树中.这意味着您仅在对话框的填充内设置了一个框.您需要创建一个自定义AlertDialog/showDialog并在其中设置半径.在自定义窗口小部件中，您还添加了按钮以及除该填充外需要执行的所有操作.
The container where you set the BoxDecoration is in the widget tree under the alert dialog. Which means you are setting just a box within the padding of your Dialog. You need to create a custom AlertDialog/showDialog and set the radius there. In the custom widget you also add the button and everything where you need to work beyond that padding.
在项目中包含customShowDialog.dart文件时( gist.github.com )在这里您可以在borderRadius: BorderRadius.all(Radius.circular(20.0))处编辑半径，并像这样调用它:
When you include the customShowDialog.dart file in your project (gist.github.com) where you can edit the radius here borderRadius: BorderRadius.all(Radius.circular(20.0)) and call it like this:
return new CustomAlertDialog(
content: new Container(
width: 260.0,
height: 230.0,
decoration: new BoxDecoration(
shape: BoxShape.rectangle,
color: const Color(0xFFFFFF),
borderRadius:
new BorderRadius.all(new Radius.circular(32.0)),
),
child: new Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: <Widget>[
// dialog top
new Expanded(
child: new Row(
children: <Widget>[
new Container(
// padding: new EdgeInsets.all(10.0),
decoration: new BoxDecoration(
color: Colors.white,
),
child: new Text(
'Rate',
style: TextStyle(
color: Colors.black,
fontSize: 18.0,
fontFamily: 'helvetica_neue_light',
),
textAlign: TextAlign.center,
),
),
],
),
),
// dialog centre
new Expanded(
child: new Container(
child: new TextField(
decoration: new InputDecoration(
border: InputBorder.none,
filled: false,
contentPadding: new EdgeInsets.only(
left: 10.0,
top: 10.0,
bottom: 10.0,
right: 10.0),
hintText: ' add review',
hintStyle: new TextStyle(
color: Colors.grey.shade500,
fontSize: 12.0,
fontFamily: 'helvetica_neue_light',
),
),
)),
flex: 2,
),
// dialog bottom
new Expanded(
child: new Container(
padding: new EdgeInsets.all(16.0),
decoration: new BoxDecoration(
color: const Color(0xFF33b17c),
),
child: new Text(
'Rate product',
style: TextStyle(
color: Colors.white,
fontSize: 18.0,
fontFamily: 'helvetica_neue_light',
),
textAlign: TextAlign.center,
),
),
),
],
),
),
);
});
您将获得以下内容:
尽管Flutter最近引入了 shape属性，它可以为您提供帮助通过使用
设置 ShapeBorder 来圆角化
Although Flutter lately introduced the shape property which would help you with the rounded corners by setting a ShapeBorder with e.g.
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.all(Radius.circular(20.0))
),
您仍然需要快速为某些自定义添加自定义窗口小部件，例如自定义填充，如上所述.
you would still need to quickly add a custom widget for some customizations, like custom padding, as stated above.
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