创建一个广播接收器，在接收到来自
AlarmManager以下站点的广播后，它将启动您的服务：
public class SyncAlarm extends BroadcastReceiver {@Overridepublic void onReceive(Context context, Intent data) { // set alarm to start service Calendar calendar = new GregorianCalendar(); calendar.setTimeInMillis(System.currentTimeMillis()); Calendar cal = new GregorianCalendar(); cal.set(Calendar.DAY_OF_YEAR, calendar.get(Calendar.DAY_OF_YEAR)); cal.set(Calendar.HOUR_OF_DAY, calendar.get(Calendar.HOUR_OF_DAY)); // start service after an hour cal.set(Calendar.MINUTE, calendar.get(Calendar.MINUTE) + 60); cal.set(Calendar.SECOND, calendar.get(Calendar.SECOND)); cal.set(Calendar.MILLISECOND, calendar.get(Calendar.MILLISECOND)); cal.set(Calendar.DATE, calendar.get(Calendar.DATE)); cal.set(Calendar.MONTH, calendar.get(Calendar.MONTH)); // set alarm to start service again after receiving broadcast AlarmManager am = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE); Intent intent = new Intent(context, SyncAlarm.class); PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_ONE_SHOT); am.cancel(pendingIntent); am.set(AlarmManager.RTC, cal.getTimeInMillis(), pendingIntent); intent = new Intent(context, Reminder.class); intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); context.startService(intent); }}当您启动应用程序时，第一次启动广播接收器：
AlarmManager am = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE); Intent intent = new Intent(context, SyncAlarm.class); PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_ONE_SHOT); am.cancel(pendingIntent); am.set(AlarmManager.RTC, System.currentTimeMillis(), pendingIntent);
还将其添加到清单文件中：
<receiver android:name=".SyncAlarm" ></receiver>
如果您希望在资源可用时立即由Android系统启动服务，而不是接收AlarmManager的广播，则也应该对此START_STICKY有所了解。
