Question

I need an application wide listener to determine when the service state changes on the phone. I’ve been through every example online, copied line for line, modified the manifest, and I CANNOT get anything to work.

Does a phone state listener HAVE to been in activity? Can I have some plain old class to listen for a phone state change??

This is very frustrating.

In my class I have…

     private class ServiceReceiver extends BroadcastReceiver{

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

            Log.i(TAG, "onReceive");

            MyPhoneStateListener qpsl = new myPhoneStateListener();
            TelephonyManager tm = (TelephonyManager)context.getSystemService(android.content.Context.TELEPHONY_SERVICE);
            tm.listen(qpsl, PhoneStateListener.LISTEN_SERVICE_STATE);
        }
    }

    private class MyPhoneStateListener extends PhoneStateListener{

public void onServiceStateStateChanged(ServiceState serviceState){
    Log.i(TAG, "ServiceState = " + serviceState.getState();
}

I know I need to modify the manifest for the broadcast receiver and phonestate. Where? I want this application wide.

This is all the code I have, can someone show me what I’m missing so that I can listen for a service state change?

Answer 1

I suspect the reason nothing works for you is the broadcast is never received. What broadcast have you registered in manifest? Remember, phone state change is not a “traditional” broadcast. You need to register this PhoneStateListener object instead.

In any case, you don’t need a BroadcastReceiver for this. Just use a Service instead. Just move the code from onReceive() above into onStartCommand() of a Service and you should be good to go.

I have implemented something along similar lines in a simple “Poor Signal History” app and it works fine. The project is uploaded here.