BroadcastReceivers.java

import java.util.Calendar;

import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;

public class MyScheduleReceiver extends BroadcastReceiver {

  // restart service every 30 seconds
  private static final long REPEAT_TIME = 1000 * 30;

  @Override
  public void onReceive(Context context, Intent intent) {
    AlarmManager service = (AlarmManager) context
        .getSystemService(Context.ALARM_SERVICE);
    Intent i = new Intent(context, MyStartServiceReceiver.class);
    PendingIntent pending = PendingIntent.getBroadcast(context, 0, i,
        PendingIntent.FLAG_CANCEL_CURRENT);
    Calendar cal = Calendar.getInstance();
    // start 30 seconds after boot completed
    cal.add(Calendar.SECOND, 30);
    // fetch every 30 seconds
    // InexactRepeating allows Android to optimize the energy consumption
    service.setInexactRepeating(AlarmManager.RTC_WAKEUP,
        cal.getTimeInMillis(), REPEAT_TIME, pending);

    // service.setRepeating(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(),
    // REPEAT_TIME, pending);

  }
}