Android - Google Map v2 - need update google play service on device

Question

i use SDK 21 and i develop on google map v2 when i want install apk on device , device need latest version of google play service.

My questions are:

1

Answer 1

1 - have android devices google play service default

No, not all devices have google play services installed by default.

2 - is it true to ask customer to install this service ?
3 - if two question is yes , how can i embed this service on my project that i just notify customer to service installation and my project install this service by itself

Normally you would check if the google play services are installed on the device with GooglePlayServicesUtil.isGooglePlayServicesAvailable(this);, and then display an error dialog where it links to google play services app on Google Play market.

Something like this:

int resultCode = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this);
if (resultCode != ConnectionResult.SUCCESS) {
   if (GooglePlayServicesUtil.isUserRecoverableError(resultCode)) {
       GooglePlayServicesUtil.getErrorDialog(resultCode, this,
                    PLAY_SERVICES_RESOLUTION_REQUEST).show();
   } else {
       Log.i(TAG, "This device is not supported.");
       finish();
   }
}

For more info you can take a look over this link: http://developer.android.com/google/play-services/setup.html#ensure