public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    Intent ll24 = new Intent(getBaseContext(), AlarmReceiver.class);
    PendingIntent recurringLl24 = PendingIntent.getBroadcast(getBaseContext(), 0, ll24, PendingIntent.FLAG_CANCEL_CURRENT);
    AlarmManager alarms = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
    alarms.setRepeating(AlarmManager.RTC_WAKEUP,0, 30*10*100, recurringLl24);
   }
 //.....
}

public class AlarmReceiver extends WakefulBroadcastReceiver
{
    static Context context;
    Date curTime,sdf,edf;
    private static final String LOG_TAG = "ForegroundService";

    @Override
    public void onReceive(Context context, Intent intent)
    {
        try
        {
            Calendar c =  Calendar.getInstance();
            curTime =  new SimpleDateFormat( "HH:mm" ).parse(c.get( Calendar.HOUR_OF_DAY)+":"+c.get( Calendar.MINUTE));
            sdf = new SimpleDateFormat( "HH:mm" ).parse("08:00");
            edf = new SimpleDateFormat( "HH:mm" ).parse("20:00");
            if(curTime.after(sdf) && curTime.before(edf))
            {
                Intent ll24Service = new Intent(context, ForegroundService.class);
                ll24Service.setAction(Constants.ACTION.STARTFOREGROUND_ACTION);
                ForegroundService.IS_SERVICE_RUNNING = true;
                startWakefulService(context,ll24Service);
            }
        } catch (ParseException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
 }

public class ForegroundService extends Service
{
...
@Override
public int onStartCommand(Intent intent, int flags, int startId)
{
    AlarmReceiver.completeWakefulIntent(intent);
    if (intent.getAction().equals(Constants.ACTION.STARTFOREGROUND_ACTION))
    {
        Log.i(LOG_TAG, "Received Start Foreground Intent ");
        showNotification();

        Calendar c =  Calendar.getInstance();
        curDateTime  = c.get( Calendar.YEAR)+"-"+ String.valueOf(c.get( Calendar.MONTH )+1)+"-"+ c.get( Calendar.DAY_OF_MONTH)+" "+c.get( Calendar.HOUR_OF_DAY)+":"+c.get( Calendar.MINUTE)+":"+c.get( Calendar.SECOND);

        gps = new GPS(ForegroundService.this);
        if(gps.canGetLocation())
        {
            double latitude = gps.getLatitude();
            double longitude = gps.getLongitude();
            latt=Double.toString(latitude);
            longi =String.valueOf(longitude);

            insertData();
        }
        else
        {
            gps.showSettingsAlert();
        }
    }

@Override
public void onDestroy() {
    super.onDestroy();
    Log.i(LOG_TAG, "In onDestroy");
}

private void insertData()
{
    try
    {
        String QUERY = "insert into GpsLoc values('"+usr+"','"+latt+"','"+longi+"','"+curDateTime+"')";
        myDatabase.execSQL(QUERY);

        Log.i(LOG_TAG, "insert");
        ConnectionDetector cd = new ConnectionDetector(getApplicationContext());
        Boolean isInternetPresent = cd.isConnectingToInternet();

        if(isInternetPresent)
        {
            Log.i(LOG_TAG, "chk int");
            addToJason();
        }
        else
        {
            Log.i(LOG_TAG, "No int");
            stopForeground(true);
            stopSelf();
        }



    }
    catch(Exception ex)
    {
        Toast.makeText(getApplicationContext(), "Data not inserted : "+ex.toString(), Toast.LENGTH_LONG).show();
    }
}