我想覆盖电源或音量按钮,并给它一个自定义功能。我已经尝试过硬件按钮包(https://pub.dev/packages/hardware_buttons/example),但它无法构建,错误为:C:\flutter\.pub-cache\hosted\pub.dartlang.org\hardware_buttons-1.0.0\android\src\main\kotlin\flutter\moum\hardware_buttons\HardwareButtonsWatcherManager.kt: (74, 42): Object is not abstract and does not
我正在尝试将首次按钮设置为禁用,当用户输入它被启用的金额时,按钮禁用工作正常,但当我在TextFormField中输入金额时,它给出以下错误。 I/flutter (29519): ══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY
╞═══════════════════════════════════════════════════════════
I/flutter (29519): The following assertion was thrown building
TextFormField(dirty, state: _T
我正在尝试播放一个本地video.the用户,选择视频并在按钮上播放它press.The代码.However我得到这个错误,似乎无法绕过它。
I/flutter ( 7097):微件库╞═══════════════════════════════════════════════════════════捕获到══╡异常
I/flutter ( 7097): The following NoSuchMethodError was thrown building VideoChoosePost(dirty, state:
I/flutter ( 7097): _VideoChoosePostSta
代码很简单--我有一个容器,在它上面堆放了不同的小部件,其中两个是搜索栏和一个平面按钮,这个平面按钮被用来提高底部的工作表,并且每当底部的工作表被抬高时,搜索条就变得不可见了。搜索栏放置在平面按钮下面。但是,每当我按下平按钮,就会引发异常。我试着重新加载这个应用程序,但是没有用。
下面是错误日志:
The following _CompileTimeError was thrown while handling a gesture:
Unimplemented handling of missing static target
When the exception was thrown, t
我需要帮助,当一个按钮被按下时,我正在尝试显示一个新页面。我得到以下错误:
I/flutter (31562): The following NoSuchMethodError was thrown while handling a gesture:
I/flutter (31562): Class 'MyHomePage' has no instance getter 'context'.
I/flutter (31562): Receiver: Instance of 'MyHomePage'
I/flutter (31562): Tried
在Android上以调试模式运行Flutter应用程序。按back按钮关闭应用程序,然后使用任务切换程序切换回应用程序。然后执行热重新加载。
flutter_tools将抛出一个异常:
Exception from flutter run: NoSuchMethodError: Class 'NoSuchMethodError' has no instance method '[]'.
Receiver: Instance of 'NoSuchMethodError'
Tried calling: []("code
这个问题有点理想化,因为我没有前进的方向。我们知道flutter web app可以在任何平台上下载,只需在chrome和mobile的菜单按钮中点击url标签旁边的下载按钮即可。此下载在android中被转换为.apk,无需从chrome打开即可使用。因此,我想知道如何通过在flutter应用程序中按下按钮来执行此下载任务。