Android Google Places API, getAutocompletePredictions returns status 'PLACES_API_ACCESS_NOT_CONFIGURED'
Enable the Google Places API for Android in developers console and check on the credentials page that your key is still present
Step by step Solution that I follows :
Just go to https://console.developers.google.com/
open your project and click on Library from Left tabs
Now in Mobile APIs do click on Google Places API for Android and ENABLE the api