Table of Contents

About

A Broadcast Receiver is a component.

Declaration

In the manifest 

<manifest>

    <application>
         <!-- Declaration of a service broadcast receiver as an intern class of a service. The path to the class may be relative -->
         <receiver
             android:name=".service.myService$myReceiver" 
             android:enabled="true" 
         />
    </application>
    
</manifest>

Snippet

Call

In a UI element, an activity or a forecast 

// The default intent
Intent alarmIntent = new Intent(getActivity(), myService.AlarmReceiver.class);
alarmIntent.putExtra(myService.KEY_VALUE, "value");
// Wrapping the default intent in a pending intent which only fires once.
PendingIntent pi = PendingIntent.getBroadcast(getActivity(), 0,alarmIntent,PendingIntent.FLAG_ONE_SHOT);//getBroadcast(context, 0, i, 0);

// Get the alarm manager
AlarmManager am=(AlarmManager) getActivity().getSystemService(Context.ALARM_SERVICE);
// Set the AlarmManager to wake up the system every 5 seconds.
am.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis()  5000, pi);

Implementation

In the service class as an inner class

The onReceive method will get triggered when a Broadcast Intent is fired. 

    static public class myReceiver extends BroadcastReceiver {
        
        // The onReceive method will get triggered when a Broadcast Intent is fired.    
        @Override
        public void onReceive(Context context, Intent intent) {
            // Implementation
            Intent sendIntent = new Intent(context, myService.class);
            sendIntent.putExtra(myService.KEY_VALUE, intent.getStringExtra(myService.KEY_VALUE));
            context.startService(sendIntent);
        }

Documentation / Reference