I am trying to get the unique device ID inside my Application class
constructor:
public class ApplicationClass extends Application
{
public ApplicationClass()
{
TelephonyManager mTelephonyMgr =
(TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);
deviceID = mTelephonyMgr.getDeviceId();
.
.
.
}
My code will run right until it gets to creating the telephony manager
instance but will not actually create it and it throws a
NullPointerException (I think).
Is there something I'm doing wrong? Do I have to create a context and
call getSystemService(...) with context.getSystemService(...)?
I also get the same error when I comment those two lines out and try
to get the LocationManager:
locationManager =
(LocationManager)getSystemService(Context.LOCATION_SERVICE);
Same exact error happens. Am I only allowed to call getSystemService
inside of an Activity class because I've tried calling it in a Service
and of course Application with no luck.
Any help is appreciated.
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