Edit:
For an Activity:
In order to register your broadcast receiver from within your app, first, remove the <receiver> tag from your AndroidManifest.xml file. Then, call registerReceiver(BroadcastReceiver receiver, IntentFilter filter) in your onResume(). Use unregisterReceiver(BroadcastReceiver receiver) in your onPause() to unregister the Broadcast receiver.
For a Service:
Remove the receiver tag from the manifest file. You can then register your Broadcast receiver with the same method in the onCreate() and unregister in the onDestroy().
EDIT: Sample Code:
public class MyActivity extends Activity {
private final BroadcastReceiver mybroadcast = new SmsBR();
public void onResume() {
super.onResume();
IntentFilter filter = new IntentFilter();
filter.addAction("android.provider.Telephony.SMS_RECEIVED");
registerReceiver(mybroadcast, filter);
}
public void onPause() {
super.onPause();
unregisterReceiver(mybroadcast);
}
}