[UIApplication sharedApplication].applicationIconBadgeNumber 不更新徽章

Question

我的一个应用中有一个特殊的电台。我应该打电话给 Alt：

[UIApplication sharedApplication].applicationIconBadgeNumber=<value>

徽章一直不显示。 在我经常调用的应用程序代表的didFinishLaunchingWithOptions 中：

UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeAlert  |   UIUserNotificationTypeBadge | UIUserNotificationTypeSound) categories:nil];
[application registerUserNotificationSettings:settings];
[application registerForRemoteNotifications];

我也尝试通过通知的方式设置它，但是显示了通知但没有更新徽章。 可能是什么问题，或者我怎样才能更好地了解？

Answer 1

首先注册 UIUserNotificationSettings

UIUserNotificationSettings* notificationSettings = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert | UIUserNotificationTypeBadge categories:nil];

[[UIApplication sharedApplication] registerUserNotificationSettings:notificationSettings];

[UIApplication sharedApplication].applicationIconBadgeNumber = <value>;

Answer 2

这要容易得多。显然，iOS 在更新后从应用设置中删除了“显示徽章图标”。启用后，徽章会正确更新。无论如何感谢您的支持。