I was tiring to build an app which uses google maps for showing places and Pace API for searching places. but it is not being possible to build the app with two different AP
First of all go to Google Api Console and select your project
And select api you want to enable like google Map Api or google place api. Enable your api.
Add api key in application tag of Manifest like
if you are using both Map and Geo Api.then only add geo api(it will work for both)