Marten questions

Marten answers

• Syncing contacts using SyncAdapter ,Working
• How to access newly added Contact in Sync Adapter onPerformSync method?
• Android AccountManager.getUserData() returns null
• Parcelable works without correct implementation
• ndb to_dict method does not include object's key
• FATAL EXCEPTION: ThumbnailManager-1 while sharing images to Intent
• rrule for repeating monthly on the 31st or closest day
• Invert paint color based on background
• SSL Certificate Pinning not working anymore on Android 9
• Google's IAB API3 getSkuDetails() method returns failed 5: Developer Error