Improve IAP handling - Githubissues

This PR fixes some ANR's that result from billing service. Despite following Google's guidelines, we are getting ANR's when initializing billing service, so I moved some calls to background thread, and added a backoff logic.

Backoff logic:

Comment out this line.

Add debuggable true to the release config. Should look like this:

release {
        debuggable true
        minifyEnabled true
        shrinkResources false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }

Launch app in release configuration.
In the logcat, confirm that you see IapViewModel I Billing response OK
Open device settings, navigate to Apps, and find Play Store.
Clear Play Store storage.
Check logcat, and confirm that you see IapViewModel I Retrying billing service connection after 1000 MS delay
Do this again, and confirm that same message with 2000 MS delay.
etc.

Afte this:

Confirm that billing flow works by purchasing sustainer plan.

Automattic / simplenote-android

Improve IAP handling #1603