在设置应用中打开应用的通知设置

Question

如果用户可能意外拒绝接收通知并希望稍后再发送通知,我如何使用NSURL将IOS设置应用程序打开到我的应用程序的通知页面,在那里他们可以选择允许通知？

Answer 1

我发现这个问题的答案（虽然很有帮助）有一些假设的逻辑。如果其他人偶然发现这个问题，这是一个简单明了的 Swift 5 实现：

if let bundleIdentifier = Bundle.main.bundleIdentifier, let appSettings = URL(string: UIApplication.openSettingsURLString + bundleIdentifier) {
    if UIApplication.shared.canOpenURL(appSettings) {
        UIApplication.shared.open(appSettings)
    }
}

Answer 2

对于Swift 3,用于UIApplicationOpenSettingsURLString转到应用程序的设置,其中显示通知状态和"蜂窝数据"

let settingsButton = NSLocalizedString("Settings", comment: "")
let cancelButton = NSLocalizedString("Cancel", comment: "")
let message = NSLocalizedString("Your need to give a permission from notification settings.", comment: "")
let goToSettingsAlert = UIAlertController(title: "", message: message, preferredStyle: UIAlertControllerStyle.alert)

goToSettingsAlert.addAction(UIAlertAction(title: settingsButton, style: .destructive, handler: { (action: UIAlertAction) in
    DispatchQueue.main.async {
        guard let settingsUrl = URL(string: UIApplicationOpenSettingsURLString) else {
            return
        }

        if UIApplication.shared.canOpenURL(settingsUrl) {
            if #available(iOS 10.0, *) {
                UIApplication.shared.open(settingsUrl, completionHandler: { (success) in
                    print("Settings opened: \(success)") // Prints true
                })
            } else {
                UIApplication.shared.openURL(settingsUrl as URL)
            } 
        }
    }
}))

logoutUserAlert.addAction(UIAlertAction(title: cancelButton, style: .cancel, handler: nil))

Answer 3

斯威夫特5：

if let url = URL(string: UIApplication.openSettingsURLString) {
    UIApplication.shared.open(url)
}

Answer 4

这应该可以让您覆盖所有 iOS 版本，包括 iOS 15 和 iOS 16。

extension UIApplication {
  private static let notificationSettingsURLString: String? = {
    if #available(iOS 16, *) {
      return UIApplication.openNotificationSettingsURLString
    }

    if #available(iOS 15.4, *) {
      return UIApplicationOpenNotificationSettingsURLString
    }

    if #available(iOS 8.0, *) {
      // just opens settings
      return UIApplication.openSettingsURLString
    }

    // lol bruh
    return nil
  }()

  private static let appNotificationSettingsURL = URL(
    string: notificationSettingsURLString ?? ""
  )

  func openAppNotificationSettings() -> Bool {
    guard
      let url = UIApplication.appNotificationSettingsURL,
      self.canOpen(url) else { return false }
    return self.open(url)
  }
}

用法：

Button {
  let opened = UIApplication.shared.openAppNotificationSettings()
  if !opened {
    print("lol fail")
  }
} label: {
  Text("Notifications")
}

Answer 5

从 iOS 15.4 开始，我们可以直接使用深度链接到 notif 设置屏幕UIApplicationOpenNotificationSettingsURLString：

https://developer.apple.com/documentation/uikit/uiapplicationopennotificationsettingsurlstring?language=objc