Track ANRs

[hot33331]

Is it possiblie in Xamarin Forms or MAUI to track ANRs with sentry, or is that something that is on the roadmap?

[mattjohnsonpint]

Not in Xamarin Forms, but we already do this for MAUI. Presently it's on by default for Android only. To turn it on for iOS, add this to your UseSentry options:

#if __IOS__
		options.iOS.EnableAppHangTracking = true;
#endif

We'll be setting it on by default when we address issue #2148.

Also note that while these will track and report ANRs, the reported stack trace will be in native code - not necessarily the C# code that generated the hang. We would have some work to do to light that up. I created an issue for that - #2179.

[Syed-RI]

I know this is enabled by default, but I have not seens any data in the dash related to ANR or slow app load times. Am I missing something? Seems stuffs described here: https://docs.sentry.io/product/insights/mobile/mobile-vitals/ doesnt apply to MAUI. Am I missing specific package or config? @Flash0ver , @jamescrosswell @Dhrumil-Sentry

[jamescrosswell]

ANRs should work (enabled by default):

sentry-dotnet/src/Sentry/Platforms/Android/NativeOptions.cs

Line 32 in 85c56e2

public bool AnrEnabled { get; set; } = true;

Mobile Vitals hasn't yet been implemented in the .NET SDK though:

• Mobile Vitals #3181

[Syed-RI]

yeah, but I have not seen any reported yet

Our app cant be that good besides I think the MAUI docs needs more TLC. You should also invest on showcasing the setup, capabilities and troubleshooting steps in liaison with a developer advocate in popular video platforms. Ive seen a few basic ones like : https://www.youtube.com/watch?v=9-50zH8fqYA&pp=ygULc2VudHJ5IG1hdWk%3, https://www.youtube.com/watch?v=4HMX5aFZMsc&pp=ygULc2VudHJ5IG1hdWk%3D but we can do better in terms ofshowcasing the other capabilities from Sentry.Android SDK that are in MAUI SDK such as Anrs (and others that I dont know about)

[jamescrosswell]

The actual implementation of ANR detection is done in the Android SDK (which the .NET SDK wraps when targeting android)... so there's a bit more detail on when/why it would be triggered here:

• https://docs.sentry.io/platforms/android/configuration/app-not-respond/

Noted re the documentation. This could definitely be improved... If you've got any specific suggestions (page/paragraphs etc. that aren't clear) or features that you didn't find documented anywhere, definitely let us know and we'll make an effort to improve these.

[Syed-RI]

The actual implementation of ANR detection is done in the Android SDK (which the .NET SDK wraps when targeting android)

Yes I thought all the Android SDK features are available on the MAUI SDK as MAUI SDK is wrapping. I suppose thats wrong.

If you've got any specific suggestions (page/paragraphs etc. that aren't clear)

Just wishing more features and in depth examples in the doc thats all. Thanks