Everything works right the first time, if you launch a second time you see this error:
FATAL EXCEPTION: main
Process
Try to use your mGoogleApiClient from your activity.
if you have declared GoogleApiClient on your activity, then you can't re-declared on your fragment. instead, re-use variable in that activity from fragment
mGoogleApiClientInFragment = ((Youractivityclass)getActivity()).mGoogleApiClient;
replace YouractivityClass with your activity of your fragment, and make sure set your mGoogleApiClient field in your activity to public