UILocalNotification不显示

Question

My goal is to send the user local notifications while the app is in the background. I've started testing out local notifications without success. I've tried adding this [self initializeNotification]; inside a UIButton action.

The debugger enters the alarm if but the notification is not showing.

-(void) initializeNotification
{
    UILocalNotification *alarm = [[UILocalNotification alloc] init];
    if (alarm)
    {
        NSLog(@"Bla");
        alarm.fireDate = nil;
        alarm.timeZone = [NSTimeZone defaultTimeZone];
        alarm.repeatInterval = 0;
        alarm.soundName = @"alarmsound.caf";
        alarm.alertBody = @"Test message...";
        [[UIApplication sharedApplication] scheduleLocalNotification:alarm];
    }

Answer 1

The fire date is interpreted according to the value specified for timeZone . If the specified value is nil or is a date in the past, the notification is delivered immediately. And, when your app is active, the localNotification not present, it onley call the delegate

- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification

So, if you want see the notification in MessageCenter , you must set a fireDate