问模拟器不显示UILocalNotification

EN

UILocalNotification* localNotification = [[UILocalNotification alloc] init];
localNotification.fireDate = [NSDate dateWithTimeIntervalSinceNow:10];
localNotification.alertBody = @"Testing";
localNotification.alertAction = @"Show me the item";
localNotification.timeZone = [NSTimeZone defaultTimeZone];
localNotification.applicationIconBadgeNumber = [[UIApplication sharedApplication] applicationIconBadgeNumber] + 1;

[[UIApplication sharedApplication] scheduleLocalNotification:localNotification];

UIApplicationState state = [application applicationState];
if (state == UIApplicationStateActive) {
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Reminder" message:notification.alertBody delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
    [alert show];
}