我想在我的视图中显示大量的芯片,里面有文本。由于计数很大,我想将芯片的大小减小到最小。特别是芯片的高度。如何做到这一点呢? for (EPDiaryTarget target in widget.item.targetList) {
Chip chip = new Chip(
label: new Text(
target.name,
overflow: TextOverflow.ellipsis,
style: new TextStyle(color: Colors.white),
),
backg
我正在创建一个本地应用程序,我使用的是图像URI,而不是png或jpg图像,只是为了缩小大小。但问题是图像URI没有在ios中加载/显示。我试过在android和网络上工作。
这是代码
//Image URI
var _hello_Image_Uri = "data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZlcnNpb249IjEuMSIgeG1sbnM6eGxpbms9Imh0dHA6Ly93d3cudzMub3JnLzE5OTkveGxpbmsiIHhtbG5
目前,我正在从后端数据库中显示这样的数据(屏幕截图),但我只是想知道如何修改它,以便它一次只能在屏幕上显示一张卡,并能够水平滚动。
我尝试过用ListView更改包装,并添加了scrollDirection: Axis.horizontal,但出于原因,我得到了这个错误。
任何帮助或建议都将是非常感谢的。
Exception has occurred.
FlutterError (RenderFlex children have non-zero flex but incoming width constraints are unbounded.
When a row is in a pare
我正在实现一个带有验证的自定义单选按钮,并在这些按钮中传递值。有一个运行时错误,我无法弄清楚。我收到以下错误
The following assertion was thrown during performLayout():
I/flutter (10799): An InputDecorator, which is typically created by a TextField, cannot have an unbounded width.
I/flutter (10799): This happens when the parent widget does not provide a
所以我试图创建一个屏幕,我做了一半,但每当我试图添加文本字段行,我做了一半与重叠的图像,但当我试图运行它抛出错误像这样,它发生时,我试图添加文本字段。
════════ Exception caught by rendering library ═════════════════════════════════════════════════════
The following assertion was thrown during performLayout():
An InputDecorator, which is typically created by a TextField, ca
你们怎么解决下面的颤振布局??
我有一个屏幕,我必须显示,如图片所描述的:一个标志+3个TextFormFields +2个按钮+一个容器。
问题:
TextFields.The --我需要将所有的小部件放在Column中,列放在SingleChildScrollView中,这样当键盘弹出时,它就不会覆盖最后一个小部件Container,它将占用底部所有剩余的屏幕空间,但不超过屏幕大小。为此,我的想法是使用Expanded小部件,以便容器可以扩展到屏幕底部,但这会导致一个错误:
The following assertion was thrown during performLayo
这就是我所犯的错误
> Another exception was thrown: BoxConstraints forces an infinite width.
>
> Another exception was thrown: RenderBox was not laid out:
> _RenderListTile#bfb7d relayoutBoundary=up18 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
>
> Another exception was thrown: RenderBox was