Android crashes after about 5 seconds[Bug]

[gviddy]

Description

Downloaded Visual Studio 2019 Preview 2 and upgraded to Maui Preview 5. Create and run an Android app on the emulator and it loads into the default click button app. After about 5 seconds the app crashes with nothing interesting in the logs. This did not occur using VS Preview 1 and Maui Preview 4.

Steps to Reproduce

1. Install Visual Studio Preview 2
2. Install Maui Preview 5
3. Create the default MAUI solution in Visual Studio
4. Build all
5. Run on Android emulator
6. See the default app load, click the button to increase the counter or do nothing.
7. After 5 seconds the app will crash.

Expected Behavior

The app does not crash. It did not do this in the previous preview.

Actual Behavior

The app crashes with nothing interesting to see in the debug window.

maui-check says everything is ok.

[gviddy]

Work around, does not crash if I run from the command line.

dotnet build -t:Run -f net6.0-android

[matt-goldman]

I get this too. I think it's a debugger issue, the last lines in the output are:

[] * Assertion at /__w/1/s/src/mono/mono/mini/debugger-engine.c:1088, condition `found_sp' not met
[libc] Fatal signal 6 (SIGABRT), code -6 (SI_TKILL) in tid 26347 (.NET ThreadPool), pid 26311 ([my app name but missing the first two letters for some reason])

[matt-goldman]

@gviddy is the workaround working ok for you? If I run from the command line it builds but doesn't run. Workaround for me has been waiting for it to crash and then just launching it again on the emulator. Not ideal as I can't debug but at least it runs.

[ncarandini]

Try to disable XAML Hot Reload:

[matt-goldman]

@ncarandini great tip! Worked for me, thanks.

[GaryGormley]

@ncarandini Worked for me as well. Also solved issue #1260, remote calls to API now working.

[gviddy]

Agree with Gary above, turning off XAML Hot Reload stops crashing. Thanks for discovering this.

[MaxxDelusional]

Disabling hot reload fixed it for me too. The weird thing is, I was working on my app for about an hour before the issue started to occur.

[jirisykora83]

This workaround does not work 100%. It just make it work some time but even with disabled Hot Reload it still start crashing. In current state it is almost impossible work with anything else then simple hello world demo. Also because of RCL (most likely) it is not possible to use WinUI. I like this project but from last few days trying to work with i am just really frustrate with current tooling i hope it gets better soon.

[] * Assertion at /__w/1/s/src/mono/mono/mini/debugger-agent.c:4389, condition tls' not met`

[PaulSorauer-IPG]

This workaround does not work 100%. It just make it work some time but even with disabled Hot Reload it still start crashing. In current state it is almost impossible work with anything else then simple hello world demo. Also because of RCL (most likely) it is not possible to use WinUI. I like this project but from last few days trying to work with i am just really frustrate with current tooling i hope it gets better soon.

[] * Assertion at /__w/1/s/src/mono/mono/mini/debugger-agent.c:4389, condition tls' not met`

Yes, I've disabled Hot Reloading but am now fairly consistently getting the same (2nd) error as @jirisykora83 . 'Tis strange, as I too initially had it working fine with Hot Reloading enabled.

[PaulSorauer-IPG]

Anecdotally, (or at least the couple of times I've just tried it), removing "net6.0-maccatalyst" (and having already removed "net6.0-ios" because I don't currently have a physical iPhone to hand), and then setting the build configuration to explicitly target x86, does seem to allow the app to deploy and run successfully to the Android emulator. Still need to have the Hot Reload switched off but at least it's kinda working.

[jfversluis]

Seems that this was mostly resolved and also applies to older previews. Hope this all is fixed, if not, please open an issue with all the new details. Thanks!