What i am trying to do is to pass a reference to the mainactivity to another class and use it.
when i first pass the reference it is not null. but later when i use it in an event handler it becomes null.
here is the code:
public class MainActivity extends MapActivity implements SmsReceivedListener {
SmsReceiver smsreceiver = new SmsReceiver();
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
smsreceiver.setSmsReceivedListener(this);
}
public void drawme() {
// do smth
}
@Override
public void onSmsReceived(String id, String lon, String lat) {
Toast.makeText(this, "SMS delivered", Toast.LENGTH_LONG).show();
}
}
The other class where I obtain the reference:
public class SmsReceiver extends BroadcastReceiver {
private SmsReceivedListener listener;
private static final String SMS_RECEIVED = "android.provider.Telephony.SMS_RECEIVED";
@SuppressLint("NewApi")
@Override
public void onReceive(final Context context, final Intent intent) {
// Here it is NULL
if(listener!=null)
listener().onSmsReceived(carNumber, lon,lat);
}
public void setSmsReceivedListener(SmsReceivedListener mainActivity) {
//It is no null when I first set the object here
listener = (mainActivity);
}
}
