问iOS registerForRemoteNotifications不会生成错误，但不会激发提供设备令牌的委托。

EN

        - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{
    if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0){

        UIUserNotificationType types = UIUserNotificationTypeBadge |
        UIUserNotificationTypeSound | UIUserNotificationTypeAlert;

        UIUserNotificationSettings *mySettings =
        [UIUserNotificationSettings settingsForTypes:types categories:nil];

        [application registerUserNotificationSettings:mySettings];
        //[application registerForRemoteNotifications];


    }else{
        [application registerForRemoteNotificationTypes:
         (UIUserNotificationTypeBadge | UIUserNotificationTypeSound | UIUserNotificationTypeAlert)];
    }
    return YES;
    }

- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken {
    NSLog(@"didRegisterForRemoteNotificationsWithDeviceToken: %@", deviceToken);
    [[UIApplication sharedApplication] setApplicationIconBadgeNumber:0];
    NSString *deviceID = [[deviceToken description] stringByTrimmingCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:@"<>"]];
    deviceID = [deviceID stringByReplacingOccurrencesOfString:@" " withString:@""];

    NSLog(@"Device_Token     -----> %@\n",deviceID);
    [[NSUserDefaults standardUserDefaults] setObject:deviceID forKey:@"KiviDeviceToken"];
    [[NSUserDefaults standardUserDefaults] synchronize];
}

-(void)application:(UIApplication *)application didFailToRegisterForRemoteNotificationsWithError:(NSError *)error
{
    NSLog(@"Error: %@", error.description);

    if (error.code == 3010) {
        NSLog(@"Push notifications are not supported in the iOS Simulator.");
    } else {
        NSLog(@"application:didFailToRegisterForRemoteNotificationsWithError: %@", error);
    }
}

- (void)application:(UIApplication *)application didRegisterUserNotificationSettings:(UIUserNotificationSettings *)notificationSettings
{
    NSLog(@"NotificationSettings: %@", notificationSettings);
    //register to receive notifications
    [application registerForRemoteNotifications];
}