How to run NSTimer in background and sleep in iOS?

Question

I found a lot of post in stackoverflow about NSTimer run in background.

However I didn\'t find any solution.

In my app , I play sound in background

Answer 1

Get Form [This Question] (http://iphonedevsdk.com/forum/iphone-sdk-development/58643-keep-nstimer-running-when-app-is-in-background-multitasking.html)

- (void)btnSetupNotificationClicked:(id)sender
{
    UILocalNotification* pOrderCompletedNotification=[[UILocalNotification alloc] init];
    if(pOrderCompletedNotification!=nil)
    {
        [pOrderCompletedNotification setFireDate:[[NSDate alloc] initWithTimeIntervalSinceNow:5.00]];
//      [pOrderCompletedNotification setApplicationIconBadgeNumber:1];
        [pOrderCompletedNotification setTimeZone:[NSTimeZone systemTimeZone]];
        [pOrderCompletedNotification setSoundName:@\"OrderCompleted.m4a\"];
        [pOrderCompletedNotification setAlertBody:@\"Order Completed\"];
        [pOrderCompletedNotification setAlertAction:nil];
        [pOrderCompletedNotification setHasAction:NO];

        UIApplication* pApplication=[UIApplication sharedApplication];
        if(pApplication!=nil)
        {
            [pApplication scheduleLocalNotification:pOrderCompletedNotification];
        }
        else
        {
            NSLog(@\"Application singleton allocation error.\");
        }

        [pOrderCompletedNotification release];
        [pApplication release];
    }
    else
    {
        NSLog(@\"Local notification creation error.\");
    }   // if
}