我有一个使用案例,我必须使用Stack和Positioned来制作一些重叠的小部件。但我也必须将其包装在Column中。当我这样做的时候,我会得到一个错误
A RenderFlex overflowed by Infinity pixels on the bottom.
显示该问题的最小示例:
import "package:flutter/material.dart";
class TestScreen extends StatelessWidget {
@override
Widget build(BuildContext context) {
retur
试图在列表视图构建器中构建一个Facebook like按钮,但在运行我的项目时没有出现。我每次都会收到此错误,但它无法显示是哪个小部件导致了此错误
Incorrect use of ParentDataWidget.
The ParentDataWidget Flexible(flex: 1) wants to apply ParentData of type FlexParentData to a RenderObject, which has been set up to accept ParentData of incompatible type BoxParentData.
Us
我正在从服务器上获取一些产品,但我得到了一个错误,声明为,引发了另一个异常:不正确地使用ParentDataWidget。AsyncSnapshot(ConnectionState.waiting,null,type‘(动态) => ProductsModel’)不是'(String,dynamic) => MapEntry<dynamic,dynamic>‘of’transform‘的子类型。
Incorrect use of ParentDataWidget.
The ParentDataWidget Flexible(flex: 1) wants to a
由于我引入了一个PageView小部件,我得到了以下错误:
════════ Exception caught by widgets library ═══════════════════════════════════ The following assertion was thrown while applying parent data.: Incorrect use of ParentDataWidget.
The ParentDataWidget Expanded(flex: 1) wants to apply ParentData of type FlexParentData t
我正在尝试从我的数据库中检索JSON代码映射,并尝试将该映射的一部分放入下拉菜单中。我对这一切都是新手,感谢大家的帮助。我在这个网站上找到了不同的解决方案,但就是不能工作。我得到了不同的错误,现在得到的错误如下所示。提前谢谢你! I/flutter (30929): ══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
I/flutter (30929): The following NoSuchMethodError was thrown bu
我在小工具开始时加载指示器有问题。在我的例子中,我异步下载了一些initState格式的数据,然后setState将_loading设置为false。
我想用导航器对话框来控制它的显示和消失。
错误:
The following assertion was thrown building NotificationView(dirty, dependencies: [_LocalizationsScope-[GlobalKey#e97a5], _InheritedTheme], state: _NotificationStateView#5dbc7):
setState() or markNee
我希望你们今天都过得很愉快!每当我在Flutter中的Messenger应用程序的搜索栏中搜索用户时,我都会得到以下错误: ======== Exception caught by widgets library =======================================================
The following StateError was thrown building:
Bad state: field does not exist within the DocumentSnapshotPlatform
When the exceptio
我是新来的颤栗,我得到了一个例外,我无法理解。有人能帮我一下吗。
我得到的例外是
══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
The following assertion was thrown while applying parent data.:
Incorrect use of ParentDataWidget.
The ParentDataWidget Positioned(right: 0.0, bottom: 0.0) wa
我试图显示一个明星图标,当用户按下它时,它会显示5星,这样用户就可以投票了。但是我得到了一个错误,它说 he following assertion was thrown while applying parent data.:
Incorrect use of ParentDataWidget.
The ParentDataWidget Expanded(flex: 1) wants to apply ParentData of type FlexParentData to a RenderObject, which has been set up to accept ParentDat
我是比较新的颤振和我得到以下错误信息。
错误信息:
The following assertion was thrown while applying parent data.:
Incorrect use of ParentDataWidget.
The ParentDataWidget Expanded(flex: 1) wants to apply ParentData of type FlexParentData to a RenderObject, which has been set up to accept ParentData of incompatible type Par
有没有办法在flutter中使用0.8.1摄像头从我的摄像头中流处理帧,并在流媒体的同时保持闪光灯亮着?在windows上工作并在android上运行
相机0.8.1的例子并没有给我一个如何设置闪光模式状态的想法。但我仍然是一个新手,所以很可能会错过它。谢谢。Get this error══╡EXCEPTION BY WIDGETS LIBRARY╞═══════════════════════════════════════════════════════════The WIDGETS══╡EXCEPTION WIDGETS to the render tree:方法'setFlas