Debbuging Xamarin on Visual Studio Android O (API 26)

Question

I've just update my OP3 on Android O, and I'm facing an issue while I want to test my Xamarin Forms app:
The generation work, and I can install the APK with the command : adb install -r
But if I want to debbug the app in Visual Studio I've got this error :

Failure [INSTALL_FAILED_ALREADY_EXISTS: Attempt to re-install Mono.Android.DebugRuntime without first uninstalling.]

(Compilation set to API 25)

Any idea ?

Answer 1

I can reproduce the same error, there are a few things you can do.

In your Android solution you can go to Project> Properties > Android Options and disable Use Shared Runtime. However deploying your app will take a very long time using this method.

You can also downgrade your phone to Nougat, which worked for me.

Let's hope OnePlus fixes this in the future.