如何在按下通知操作时运行URL？

Question

我创建了一个包含两个操作的通知.我的一个动作叫做"取消",而另一个叫做"呼叫".如何使"调用"操作运行我添加到代码中的注释中的URL.这是我的代码:

  func notificationFires(){

    /**
     URL Code:

     if let url = URL(string: "tel://") {
     UIApplication.shared.open(url, options: [:])
     }


**/

    let call = UNNotificationAction(identifier:"call", title:"Call", options:[.foreground])
    let cancel = UNNotificationAction(identifier: "cancel", title: "Cancel", options: [.destructive ])
    let category = UNNotificationCategory(identifier: "category", actions: [call, cancel], intentIdentifiers: [], options: [])
    UNUserNotificationCenter.current().setNotificationCategories([category])

    let notification = UILocalNotification()
    notification.category = "category"
    // 2

    notification.soundName = UILocalNotificationDefaultSoundName
    notification.fireDate = datePicker.date

    // 3
    if textField.text == "" {

        notification.alertBody = "You have a call right now!"

    }
    else{

        notification.alertBody = self.textField.text

    }
    // 4
    notification.timeZone = NSTimeZone.default
    // 5
    // 6
    notification.applicationIconBadgeNumber = 1
    // 7

    func application(application: UIApplication!, handleActionWithIdentifier identifier:String!, forLocalNotification notification:UILocalNotification!, completionHandler: (() -> Void)!){

        if (identifier == "call"){
            if let url = URL(string: "tel://2162964785") {
                UIApplication.shared.open(url, options: [:])
            }
        }else if (identifier == "cancel"){

        }

    }

    UIApplication.shared.scheduleLocalNotification(notification)



    func application(application: UIApplication,  didReceiveLocalNotification userInfo: [NSObject : AnyObject],  fetchCompletionHandler completionHandler: (UIBackgroundFetchResult) -> Void) {
        print("Recieved: notification")



        let center = UNUserNotificationCenter.current()
        center.removeDeliveredNotifications(withIdentifiers: ["notification"])




    }

}

Answer 1

假设您的通知工作正常，您可以按照UNUserNotificationCenterDelegate处理“呼叫”操作。

就像是：

 func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
        if response.actionIdentifier == "call" {
            let body = response.notification.request.content.body

            if let url = URL(string: "tel://\(body)") {
                UIApplication.shared.open(url, options: [:], completionHandler: nil)
            }
        }
    }

该body常量将设置为您要“打开”的电话号码。

另外，需要注意的是，这必须在实际设备上进行测试。打开tel方案在模拟器中没有任何作用。

UNUserNotificationCenterDelegate API 参考： https ://developer.apple.com/reference/usernotifications/unusernotificationcenterdelegate

编辑：

您不调用委托方法。相反，你实施它。委托方法由 调用UNUserNotificationCenter。

为了使其正常工作，确保将UNUserNotificationCenter.current()委托属性设置为符合UNUserNotificationCenterDelegate协议的类非常重要。

例如，如果您在 中处理通知AppDelegate，则可能有类似以下方法：

func callNotification() {
    let center = UNUserNotificationCenter.center()

    // TODO: - Create your actions, category, content, trigger and request...

    center.delegate = self // Important!

    center.removeAllPendingNotificationRequests()
    center.add(request, withCompletionHandler: nil)
}

上面的方法将负责定义您的通知并安排它。为了简洁起见，我省略了所有定义通知的代码，因为您表明这是有效的。相反，您应该注意到该delegate属性被设置为self。

然后在扩展中，您将使其AppDelegate符合UNUserNotificationCenterDelegate并实现所需的方法。

extension AppDelegate: UNUserNotificationCenterDelegate {
    func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
        if response.actionIdentifier == "call" {
            let body = response.notification.request.content.body

            if let url = URL(string: "tel://\(body)") {
                UIApplication.shared.open(url, options: [:], completionHandler: nil)
            }
        }
    }
}

现在，因为您AppDelegate符合UNUserNotificationCenterDelegate协议并且您将self( AppDelegate) 设置为 的UNUserNotificationCenter委托，所以将调用您的方法的实现。userNotification(_:didReceive:withCompletionHandler:)