UILocalNotifications playing Custom sound

Question

I implemented local notification in my app but I am just wondering is there a way to play a sound that is not part of the main bundle of iPhone App. Basically in my app, I want user to record a sound that gets played when the local notification is generated instead of playing a pre-recorded or default sound. As far as i know this can be implementable because i have seen 2-3 App in app store which is doing the same thing which i want to do

- (void)alertSelector:(NSString *)AlertTitle WithFiringTime:(NSDate *)date
{ 

UILocalNotification *localNotification = [[[UILocalNotification alloc] init] autorelease];
   [localNotification setFireDate:date];
   [localNotification setTimeZone:[NSTimeZone defaultTimeZone]];
   NSDictionary *data = [NSDictionary dictionaryWithObject:date forKey:@"payload"];       
   [localNotification setUserInfo:data];[localNotification setAlertBody:AlertTitle];   
   [localNotification setAlertAction:@"View"]; [localNotification setHasAction:YES]; 
   localNotification.soundName=@"voice.aif"; 

   if (!localNotification)
          return;

    [[UIApplication sharedApplication] scheduleLocalNotification:localNotification]; 
}

Answer 1

My guess is your sound isn't formatted appropriately to play by the OS. Make sure your sound is formatted in IMA4 format. Also, make sure your file is in your application bundle, and you should be good to go.

For more reference and similar question, see this SO question.

Choose custom sound for Local Notifications

Here is a link for Apple's Local and Push Notification Guide. It explains the sounds in detail and the default sounds that can be used.