iOS：有沒有辦法知道用戶是否選擇了退出通知？

Question

與CLAuthorizationStatus我可以確切地知道用戶是否拒絕了應用程序權限（kCLAuthorizationStatusDenied）或狀態未定（kCLAuthorizationStatusNotDetermined）。

...那麼有沒有類似的通知服務？我似乎無法找到任何內容，似乎無法區分拒絕權限的用戶和尚未顯示彈出權限的用戶。

Answer 1

UIUserNotificationSettings *currentSettings = [[UIApplication sharedApplication] currentUserNotificationSettings]; 

此代碼將給出與通知相關的最新設置。

Answer 2

if ([[[UIDevice currentDevice]systemVersion]floatValue] >= 8.0) { 
    UIUserNotificationSettings *current = [[UIApplication sharedApplication]currentUserNotificationSettings]; 
    if (current.types != UIUserNotificationTypeNone){ 
     NSLog(@"Notifications Enabled ios 8"); 
    } else { 
     NSLog(@"Notifications not Enabled ios 8"); 
    } 

} else { 
    UIRemoteNotificationType types = [[UIApplication sharedApplication]enabledRemoteNotificationTypes]; 
    if (types != UIRemoteNotificationTypeNone) 
    { 
     NSLog(@"Notifications Enabled"); 
    } 
    else 
    { 
     NSLog(@"Notifications not Enabled"); 
    } 
}