Xamarin.Android 应用程序仅在干净编译时发现启动器活动 [英] Xamarin.Android app only finding launcher activity on clean compile

问题描述

我有一个 Xamarin.Android 活动标记为 MainLauncher，称为 Login.

I have an Xamarin.Android with the activity marked as MainLauncher called Login.

当我第一次按 F5 时，应用程序在模拟器中正常启动.然后我停下来，做一些代码更改，再次按 F5 我可以看到应用程序在模拟器中启动，当我得到这个时它的 UI 开始显示:

When I press F5 for first time the app starts ok in the emulator. Then I stop, do some code change, press F5 again I can see the app starting in the emulator and it's UI starting to show when I get this:

Java.Lang.RuntimeException: Unable to instantiate activity ComponentInfo{MyApp.MyApp/md5b14ee1c038eed1ee5328e926d768294f.Login}: java.lang.ClassNotFoundException: Didn't find class "md5b14ee1c038eed1ee5328e926d768294f.Login" on path: DexPathList[[zip file "/data/app/MyApp.MyApp-1/base.apk"],nativeLibraryDirectories=[/data/app/MyApp.MyApp-1/lib/x86, /vendor/lib, /system/lib]]

然后我会在所有尝试启动它时收到此错误.唯一的解决方案是删除 bin 和 obj 文件夹，然后再次按 F5.之后，该应用程序通常会启动一次，然后我必须再次删除文件夹.

Then I will get this error on all attempts to start it. The only solution is to delete the bin and obj folders and press F5 again. After that the app will normally start once before I have to remove the folders again.

推荐答案

此问题已修复，将包含在 Visual Studio 15.5.5 或 Visual Studio 15.6 Preview 3.

This issue has been fixed and will be included in Visual Studio 15.5.5 or Visual Studio 15.6 Preview 3.

包含此修复程序的相应 Xamarin.Android 版本是 Xamarin.Android 8.1.5.0 (Stable) 和 Xamarin.Android 8.2.0.6 (Preview)

The respective Xamarin.Android version this fix is included in are Xamarin.Android 8.1.5.0 (Stable) and Xamarin.Android 8.2.0.6 (Preview)

敬请留意此版本，因为它即将推出！

Be on the look-out for this release as it will be available soon!

(如果您今天需要解决方法，请按照此处的步骤操作:https://bugzilla.xamarin.com/show_bug.cgi?id=61073#c40)

(If you need a workaround today, please follow the steps here: https://bugzilla.xamarin.com/show_bug.cgi?id=61073#c40)

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