alarm type :
/**
* Alarm time in {@link System#currentTimeMillis System.currentTimeMillis()}
* (wall clock time in UTC), which will wake up the device when
* it goes off.
*/
public static final int RTC_WAKEUP = 0;
/**
* Alarm time in {@link System#currentTimeMillis System.currentTimeMillis()}
* (wall clock time in UTC). This alarm does not wake the
* device up; if it goes off while the device is asleep, it will not be
* delivered until the next time the device wakes up.
*/
public static final int RTC = 1;
/**
* Alarm time in {@link android.os.SystemClock#elapsedRealtime
* SystemClock.elapsedRealtime()} (time since boot, including sleep),
* which will wake up the device when it goes off.
*/
public static final int ELAPSED_REALTIME_WAKEUP = 2;
/**
* Alarm time in {@link android.os.SystemClock#elapsedRealtime
* SystemClock.elapsedRealtime()} (time since boot, including sleep).
* This alarm does not wake the device up; if it goes off while the device
* is asleep, it will not be delivered until the next time the device
* wakes up.
*/
public static final int ELAPSED_REALTIME = 3;