As @stealthcopter said, the AlarmManager is used to raise an Alarm your application can catch and then do something. Here is a little example I threw together from other posts, tutorials, and work I've done.
Main.java
Intent i = new Intent(this, OnAlarmReceiver.class);
PendingIntent pi = PendingIntent.getBroadcast(this, 0, i,
PendingIntent.FLAG_ONE_SHOT);
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.SECOND, calendar.get(Calendar.SECOND) + 10);
AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
alarmManager.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), pi);
OnAlarmReceiver.java
public class OnAlarmReceiver extends BroadcastReceiver{
@Override
public void onReceive(Context context, Intent intent) {
WakeIntentService.acquireStaticLock(context);
Intent i = new Intent(context, AlarmService.class);
context.startService(i);
}}
WakeIntentService.java
public abstract class WakeIntentService extends IntentService {
abstract void doReminderWork(Intent intent);
public static final String LOCK_NAME_STATIC = "com.android.voodootv.static";
private static PowerManager.WakeLock lockStatic = null;
public static void acquireStaticLock(Context context) {
getLock(context).acquire();
}
synchronized private static PowerManager.WakeLock getLock(Context context) {
if (lockStatic == null) {
PowerManager powManager = (PowerManager) context
.getSystemService(Context.POWER_SERVICE);
lockStatic = powManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
LOCK_NAME_STATIC);
lockStatic.setReferenceCounted(true);
}
return (lockStatic);
}
public WakeIntentService(String name) {
super(name);
}
@Override
final protected void onHandleIntent(Intent intent) {
try {
doReminderWork(intent);
} finally {
getLock(this).release();
}
}}
AlarmService.java
public class AlarmService extends WakeIntentService {
public AlarmService() {
super("AlarmService");
}
@Override
void doReminderWork(Intent intent) {
NotificationManager manager = (NotificationManager)
getSystemService(NOTIFICATION_SERVICE);
Intent notificationIntent = new Intent(this, Main.class);
PendingIntent pi = PendingIntent.getActivity(this, 0,
notificationIntent, PendingIntent.FLAG_ONE_SHOT);
Notification note = new Notification(R.drawable.icon, "Alarm",
System.currentTimeMillis());
note.setLatestEventInfo(this, "Title", "Text", pi);
note.defaults |= Notification.DEFAULT_ALL;
note.flags |= Notification.FLAG_AUTO_CANCEL;
int id = 123456789;
manager.notify(id, note);
}
}
This example will create a notification on the status bar after 10 seconds.
Hope it helps.
Also First post here :)
Oh almost forgot,
AndroidManifest.xml
<receiver android:name="com.android.alarmmanagertest.OnAlarmReceiver" />
<service android:name="com.android.alarmmanagertest.AlarmService" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.VIBRATE" />
