Question

Can UILocalNotification be stored in NSUserDefaults?

I tried to get the value but it always returns null.

Here’s the method that tries to get the value

-(IBAction)doneClicked:(id)sender
{
    NSUserDefaults *prefx = [NSUserDefaults standardUserDefaults];
    UILocalNotification *oldNotifObj = [prefx objectForKey:@"NotificationObject"];
    NSLog(@"oldNotifObj = %@",oldNotifObj);

    NSLog(@"enable notification");
    if (oldNotifObj == nil)
    {
        [self addNotification];
        NSLog(@"add a new one");
    }
    else
    {
        //if notification exist, remove old one, and add new one.
        [self removeNotification:oldNotifObj];
        [prefx setObject:nil forKey:@"NotificationObject"];
        [self addNotification];
        NSLog(@"remove old notification and add a new one");
    }
}

and here’s the addNotification method

-(void)addNotification
{
    //set the notification
    UILocalNotification *localNotif = [[UILocalNotification alloc]init];
    localNotif.fireDate = self.timePicker.date;
    localNotif.repeatInterval = NSDayCalendarUnit;
    localNotif.alertBody = @"Hello world!";
    localNotif.soundName = UILocalNotificationDefaultSoundName;
    [[UIApplication sharedApplication]scheduleLocalNotification:localNotif];

    NSLog(@"localNotif = %@",localNotif);

    //saving notification to prefs    
    NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
    [prefs setObject:localNotif forKey:@"NotificationObject"];
    [prefs synchronize];
}

the oldNotifObj always return null.

Answer 1

Try to convert the values manually in to an NSDictionary and try adding that to userdefaults. That solves this.
I mean you can convert the items like localNotif.fireDate
localNotif.repeatInterval
localNotif.alertBody
localNotif.soundName etc into string objects and set them in to an NSDictionary. So you can save them into the userdefaults.
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