推送通知不会立即更新

Question

我正在使用 iOS 8+ 上的推送通知。我尝试更新 UIUserNotificationSettings 值并将其取回进行比较，但它不一样。有人可以帮我解决/解释这个问题吗？非常感谢。

这是我的代码：

UIUserNotificationType types = UIUserNotificationTypeAlert | UIUserNotificationTypeSound;
        NSLog(@"Before register: %u", types);
UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:types categories:nil];
[[UIApplication sharedApplication] registerUserNotificationSettings:settings];

UIUserNotificationSettings* currentSeting =  [[UIApplication sharedApplication] currentUserNotificationSettings];
NSLog(@"After register: %u", currentSeting.types);

这里是输出控制台：

Before register: 6
After register: 0

Answer 1

尝试在didRegisterUserNotificationSettings 委托方法中检查它，如下所示：

-(void)application:(UIApplication *)application didRegisterUserNotificationSettings:(UIUserNotificationSettings*)notificationSettings
{
    UIUserNotificationSettings* currentSeting =  [[UIApplication sharedApplication] currentUserNotificationSettings];
}