Question

我想在我的应用上实施推送通知。我可以向设备发送通知。我想要做的是检查用户是否通过单击警报打开应用程序。如果是，我将弹出一些对话框或根据警报内容显示不同的内容。我不知道如何在我的应用程序中这样做。我知道有一个方法如下所示，我可以覆盖AppDelegate类。当用户收到通知时，将调用此方法。但我不知道用户是否通过单击警报打开应用程序。我怎样才能实现它？

func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject])

Answer 1

如果您按下Alert on APNS确认提醒，则会触发以下代表

如果用户按下“允许”按钮

func application(application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: NSData) {

let trimmedDeviceToken = deviceToken.description .stringByTrimmingCharactersInSet(NSCharacterSet(charactersInString: "<>"))
    .stringByReplacingOccurrencesOfString(" ", withString: "")
print("Device Token \(trimmedDeviceToken)")

}

如果用户按下“不允许”按钮

func application(application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: NSError) {
print("Failed to get token, error: \(error)")
}

在您收到通知后，以下代表被称为

 func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject])
   {

       print(userInfo) // you can get the details in here
        if ( application.applicationState == UIApplicationState.Inactive || application.applicationState == UIApplicationState.Background ){
                print("opened from a push notification when the app was on background")
        }else{
                print("opened from a push notification when the app was on foreground")
        }
    }

示例教程请参阅this

Answer 2

使用以下条件检查应用程序状态，在 didReceiveRemoteNotification 方法中，

func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject])
    {
            if ( application.applicationState == UIApplicationState.Inactive || application.applicationState == UIApplicationState.Background ){
                    //Tapped from a notification and the app is in background.
            }else{
                    //App is in Foreground...
            }
    }

希望这有帮助。

Answer 3

通过将标记设置为警报视图来使用UIAlertViewDelegate方法

如何检测用户是否单击警报以打开应用程序？

3 个答案: