Swift ios檢查是否在ios9和ios10中啓用遠程推送通知

Question

如何檢查用戶是否啓用了ios 9或ios 10上的遠程通知？

如果用戶未允許或單擊否我想切換一條消息詢問他們是否要啓用通知。

Answer 1

此答案已過時，因此不支持iOS 10，您可以檢查this答案。

---

使用此代碼

let isRegisteredForRemoteNotifications = UIApplication.shared.isRegisteredForRemoteNotifications 
if isRegisteredForRemoteNotifications { 
    // User is registered for notification 
} else { 
    // Show alert user is not registered for notification 
} 

Answer 2

我試圖拉雅的解決方案，但它並沒有給我在iOS上10（SWIFT 3）工作。它總是說推送通知已啓用。以下是我如何解決問題。如果用戶點擊了「不允許」或者您還沒有詢問用戶，則表示「未啓用」。

let notificationType = UIApplication.shared.currentUserNotificationSettings!.types 
    if notificationType == [] { 
     print("notifications are NOT enabled") 
    } else { 
     print("notifications are enabled") 
    } 

PS：方法currentUserNotificationSettings在iOS 10.0中已被棄用，但仍然有效。

Answer 3

Apple建議使用UserNotifications框架而不是共享實例。所以，不要忘記導入UserNotifications框架。由於這個框架是iOS的10個新的就真的只有安全使用的應用程序構建此代碼爲iOS10 +

let current = UNUserNotificationCenter.current() 

current.getNotificationSettings(completionHandler: { (settings) in 
    if settings.authorizationStatus == .notDetermined { 
     // Notification permission has not been asked yet, go for it! 
    } 

    if settings.authorizationStatus == .denied { 
     // Notification permission was previously denied, go to settings & privacy to re-enable 
    } 

    if settings.authorizationStatus == .authorized { 
     // Notification permission was already granted 
    } 
}) 

您可以檢查的官方文件以獲得更多信息：https://developer.apple.com/documentation/usernotifications

Answer 4

@拉雅的答案是遠遠不夠的。

• isRegisteredForRemoteNotifications是您的應用程序已連接到APNS並獲得設備令牌，這可能是無聲推送通知
• currentUserNotificationSettings是用戶權限，如果沒有這個，沒有發表任何警報，橫幅或聲音推送通知到應用

這裏是支票

static var isPushNotificationEnabled: Bool { 
    guard let settings = UIApplication.shared.currentUserNotificationSettings 
    else { 
     return false 
    } 

    return UIApplication.shared.isRegisteredForRemoteNotifications 
    && !settings.types.isEmpty 
} 

Answer 5

如果您的應用支援iOS 10和iOS 8,9使用以下代碼

//at the top declare UserNotifications 
//to use UNUserNotificationCenter 
import UserNotifications 

然後，

if #available(iOS 10.0, *) { 
     let current = UNUserNotificationCenter.current() 
     current.getNotificationSettings(completionHandler: { (settings) in 
      if settings.authorizationStatus == .notDetermined { 
       // Means you can request 
      } 

      if settings.authorizationStatus == .denied { 
       // User should enable notifications from settings & privacy 
       // show an alert or sth 
      } 

      if settings.authorizationStatus == .authorized { 
       // It's okay, no need to request 
      } 
     }) 
    } else { 
     // Fallback on earlier versions 
     if UIApplication.shared.isRegisteredForRemoteNotifications { 
      print("APNS-YES") 
     } else { 
      print("APNS-NO") 
     } 
    } 

Answer 6

在iOS11，斯威夫特4

...

UNUserNotificationCenter.current().getNotificationSettings { (settings) in 
     if settings.authorizationStatus == .authorized { 
      // Already authorized 
     } 
     else { 
      // Either denied or notDetermined 
      UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound, .badge]) { 
       (granted, error) in 
        // add your own 
       UNUserNotificationCenter.current().delegate = self 
       let alertController = UIAlertController(title: "Notification Alert", message: "please enable notifications", preferredStyle: .alert) 
       let settingsAction = UIAlertAction(title: "Settings", style: .default) { (_) -> Void in 
        guard let settingsUrl = URL(string: UIApplicationOpenSettingsURLString) else { 
         return 
        } 
        if UIApplication.shared.canOpenURL(settingsUrl) { 
         UIApplication.shared.open(settingsUrl, completionHandler: { (success) in 
         }) 
        } 
       } 
       let cancelAction = UIAlertAction(title: "Cancel", style: .default, handler: nil) 
       alertController.addAction(cancelAction) 
       alertController.addAction(settingsAction) 
       DispatchQueue.main.async { 
        self.window?.rootViewController?.present(alertController, animated: true, completion: nil) 

       } 
      } 
     } 
    } 

Answer 7

以下是獲取描述了與iOS 9槽iOS的11件作品的當前權限的字符串的解決方案，使用Swift 4.此實現使用When作爲承諾。

import UserNotifications 

private static func getNotificationPermissionString() -> Promise<String> { 
    let promise = Promise<String>() 

    if #available(iOS 10.0, *) { 
     let notificationCenter = UNUserNotificationCenter.current() 
     notificationCenter.getNotificationSettings { (settings) in 
      switch settings.authorizationStatus { 
      case .notDetermined: promise.resolve("not_determined") 
      case .denied: promise.resolve("denied") 
      case .authorized: promise.resolve("authorized") 
      } 
     } 
    } else { 
     let status = UIApplication.shared.isRegisteredForRemoteNotifications ? "authorized" : "not_determined" 
     promise.resolve(status) 
    } 

    return promise 
}