No Exception on Android if Activity is null (due to init not being set)

[jamesmontemagno]

Original Issue: https://github.com/MicrosoftDocs/xamarin-docs/issues/421

Description

If we try to use an API where the Activity (not context) is required then we get no notification or error that it was null and we should set the Init and track it correctly.

Steps to Reproduce

1. Install without adding Android Init
2. Call Screenlock functionality
3. Nothing happens

Expected Behavior

Exception should occure

Actual Behavior

Nothing happens

[ydniw]

Hi, I've upgraded to 0.7.0.17-preview and lost the init on Xamarin.Essentials.Platform.Init, was working fine on previous version.

[mattleibow]

Make sure you updated the Android project as well

[jamesmontemagno]

@ydniw this most likely means that you are not compiling against Android 8.1. You will want to change that and then uninstall the nuget and re-add it. See: https://blog.xamarin.com/android-apps-google-play-target-api-level-requirements/