Flutter的ListView或Column或Row嵌套ListView,往往会报下面的错误: RenderBox was not laid out: RenderFlex... 这是因为ListView或Column或Row嵌套ListView,会有问题,解决办法如下: 处理方案 一、ListView嵌套ListView ListView( children: <Widget>[ ListView( shrinkWrap: true, //为true可以解决子控件必须设置高度的...
I/flutter ( 4625): there will always be enough vertical space for the children. In this case, consider using a Column I/flutter ( 4625): instead. Otherwise, consider using the “shrinkWrap” property (or a ShrinkWrappingViewport) to size I/flutter ( 4625): the height of the viewport to...
在列布局中使用ListView,可以通过将ListView作为Column的子组件来实现。例如: 代码语言:txt 复制 Column( children: [ Text('Item 1'), Text('Item 2'), Text('Item 3'), ListView( shrinkWrap: true, children: [ Text('Item 4'), Text('Item 5'), Text('Item 6'), ], ), ], ) 在行布局中使...
5. 在 Column 小部件中添加 ListView 或 GridView ー 如果要在 Column 小部件中使用 ListView 或 GridView,您将看到以下错误: flutter: ══╡ EXCEPTION CAUGHT BY RENDERING LIBRARY ╞═════════════════════════════════════════════════════...
( title: Text(widget.model.title), ), body: Center( child: Column( children: [ const SizedBox(height: 16), Icon( widget.model.icon, size: 100, ), const SizedBox(height: 16), Text( 'Item description: ${widget.model.description}', style: TextStyle(fontSize: 18), ) ], ), ), )...
5. 在 Column 小部件中添加 ListView 或 GridView ー 如果要在 Column 小部件中使用 ListView 或 GridView,您将看到以下错误: flutter: ══╡ EXCEPTION CAUGHT BY RENDERING LIBRARY ╞═════════════════════════════════════════════════════...
上面参数分为两组:第一组是可滚动组件的公共参数;第二组是ListView各个构造函数(ListView有多个构造函数)的共同参数,我们重点来看看这些参数,: itemExtent:该参数如果不为null,则会强制children的“长度”为itemExtent的值;这里的“长度”是指滚动方向上子组件的长度,也就是说如果滚动方向是垂直方向,则itemExtent代表...
I/flutter ( 5969): Ifthiswidget is always nestedina scrollable widget there is no need to use a viewport because I/flutter ( 5969): there will always be enough vertical spaceforthe children. Inthiscase, consider using a Column I/flutter ( 5969): instead. Otherwise, consider using the"shr...
I/flutter ( 2743): like a ListView. I/flutter ( 2743): The specific RenderFlex in question is: I/flutter ( 2743): RenderFlex#4a1bb OVERFLOWING I/flutter ( 2743): creator: Column ← Padding ← Container ← RepaintBoundary-[<14>] ← IndexedSemantics ← ...
Basic widgets 常用的组件有:Text:可以创建有样式的文本Row, Column:创建灵活的水平和垂直布局,根Web中的flexbox一样Stack:用于创建层层遮盖的组件容器,通过在容器中使用Positioned组件,可以创建类似Web中的绝对定位Container:可以用于创建方形的可视区域,然后用 BoxDecoration 来配置样式(边框、背景、阴影),同样...