Question

I am using a Broadcast Receiver to receive a Broadcast when the phone boots up, and from there I’d like to register a PhoneStateListener and ContentObserver. Unfortunately it won’t let me use the setReceiver() method for the ContentObserver like in my main activity. There was a similar problem with PhoneStateListener and startService(), but I was able to use the passed context to make it work. This does not solve the problem for setReceiver. What is the correct way of calling this method?

By the way the error it gives is “The method setReceiver(SmsObserver) is undefined for the type Context”

My code:

public class BootReceiver extends BroadcastReceiver {

private Context mContext;

@Override
public void onReceive(Context context, Intent intent) {

    mContext = context;

    // Get the telephony manager
            TelephonyManager telephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE);

            // Create a new PhoneStateListener
            PhoneStateListener listener = new PhoneStateListener() {

                @Override
                public void onCallStateChanged(int state, String incomingNumber) {
                    if (state == TelephonyManager.CALL_STATE_IDLE) {
                        Intent update = new Intent(mContext,
                                UpdateService.class);
                        mContext.startService(update);
                    }
                }

                @Override
                public void onDataActivity(int direction) {
                    if (direction == TelephonyManager.DATA_ACTIVITY_NONE) {
                        Intent update = new Intent(mContext,
                                UpdateService.class);
                        mContext.startService(update);
                    }
                }
            };

            // Register the listener with the telephony manager
            telephonyManager.listen(listener, PhoneStateListener.LISTEN_CALL_STATE);
            telephonyManager.listen(listener,
                    PhoneStateListener.LISTEN_DATA_ACTIVITY);

            SmsObserver smsSentObserver = new SmsObserver(new Handler(), mContext);

            //Unable to call this method
            mContext.setReceiver(smsSentObserver);

}

}

Answer 1

This does not solve the problem for setReceiver. What is the correct way of calling this method?

Tactically, there is no setReceiver() method anywhere in Android. If SmsObserver is supposed to be a ContentObserver, you would use a ContentResolver and notifyChange() to register it.

Strategically, your code is useless, as your process can be terminated shortly after onReceive() ends, making all this work moot.