[android help] Broadcast Receiver class and registerReceiver method

Broadcast Receiver class and registerReceiver method

Hi i am trying to understand Broadcast Receiver , i went through many sample codes , but still have some doubts. I wanted to know when we have to extend the Broadcast Receiver class and when should we use registerReceiver() method and when should we create object for BroadcastReceiver. In some programs i came across registerReceiver methods being used but without extending the Broadcast Receiver class. I also wanted to know how the onReceive method gets called.

Which approach should be used when?

here is the registerReceiver method: registerReceiver(new BroadcastReceiver() {

        @Override
        public void onReceive(Context context, Intent intent) {
            switch (getResultCode()) {
            ........
            }

        }

    }, new IntentFilter(SENT));

Object being created for BroadcastReceiver:

private BroadcastReceiver intentReceiver = new BroadcastReceiver() {

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

};

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