Bug 55418 - Xamarin Android deploys in VS2017 hang
Summary: Xamarin Android deploys in VS2017 hang
Alias: None
Product: Android
Classification: Xamarin
Component: Debugger ()
Version: unspecified
Hardware: PC Windows
: --- normal
Target Milestone: ---
Assignee: Bugzilla
Depends on:
Reported: 2017-04-20 02:53 UTC by Katelyn Gadd
Modified: 2017-08-23 21:07 UTC (History)
3 users (show)

Tags: bb
Is this bug a regression?: ---
Last known good build:

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Description Katelyn Gadd 2017-04-20 02:53:23 UTC
Under normal circumstances if I try to debug a Xamarin Android project using VS2017, the deploy process hangs right after this:

1>XASRESymbolTest -> e:\Documents\Projects\XASRESymbolTest\bin\Debug\XASRESymbolTest.dll
1>  Processing: obj\Debug\res\layout\main.xml
1>  Processing: obj\Debug\res\values\strings.xml

When I examine a procmon log, VBCSCompiler.exe has finished updating the dll and mdb files, but everything is just stuck. Even killing processes won't recover it.

There are two workarounds:

a) Nuke the entire contents of the bin/ folder so that the application is recompiled from scratch. This results in jar signing, keytool, etc all happening and then the emulator starts and the app is deployed.

b) Start a debug, then cancel the build after the deploy hangs. *Leave that emulator instance open*, then try to debug again. This time the deploy will succeed.

So some combination of 'existing application binary' and 'starting new emulator instance from scratch' causes the deploy process to silently hang. I haven't been able to figure out how to troubleshoot this further.

For context, I installed VS2017 community from scratch this morning and then asked it to install Xamarin for me. This occurs using the Android 'Single-View App' template with no changes. I'm using the VisualStudio_android-23_x86_phone (Android 6.0 - API 23) emulator option.
Comment 1 Mark McLemore 2017-06-23 18:36:39 UTC
Hi, can you attach some additional information to help us reproduce this error (for example, log files and/or a test case)?  Please have a look at: https://developer.xamarin.com/guides/cross-platform/troubleshooting/questions/howto-file-bug/

Comment 2 Cody Beyer (MSFT) 2017-08-23 21:07:29 UTC
Because we have not received a reply to our request for more information we are closing this issue. If you are still encountering this issue, please reopen the ticket with the requested information. Thanks!