Broadcast and broadcast receiver code instances in Android

BroadcastReceiver can receive both system broadcasts and custom broadcasts

1. Define a broadcast receiver

public class MyReceiver extends BroadcastReceiver

{

         public MyReceiver()

         {

                   Log.i(TAG,"MyReceiver");

         }

        

         // available Intent the getAction() Distinguish between different broadcasts received 

         @Override

         public void onReceive(Context arg0, Intent arg1)

         {

                   String action=intent.getAction();

                   //TO-DO LIST

         }

 

}

2. Send broadcast, define action logo, and send with Intent

// Instantiate the BroadcastReceiver

MyReceiver mReceiver=new MyReceiver();

// Set only 1action with Intent send 

Intent intent=new Intent();

intent.setAction(str);

sendBroadcast(intent);

3. Register to receive broadcast receivers that specify action only

IntentFilter filter1=new IntentFilter();

filter1.addAction(str);

registerReceiver(mReceiver,filter1);

4. Cancel the broadcast receiver

unregisterReceiver(mReceiver);