alarm周期发送

alarm一小时发送

// We want the alarm to go off 30 seconds from now. 
long firstTime = SystemClock.elapsedRealtime(); 
firstTime += remainingMilisecondsToTopHour; 
long a=c.getTimeInMillis(); 
 
 
AlarmManager am = (AlarmManager)ctx.getSystemService(Context.ALARM_SERVICE); 
am.setRepeating(AlarmManager.ELAPSED_REALTIME, 
c.getTimeInMillis(), 1*60*60*1000, sender);