OneSignal:如何处理Xamarin.Forms应用程序的AppDelegate中的notificationOpened？

Question

我正在使用Xamarin.Forms实现OneSignal推送通知.

我需要将OneSignal返回的字符串传递AdditionalData给构造函数App().

所以我用来HandleNotificationOpened(OSNotificationOpenedResult result)处理通知点击并获取字符串,然后将其传递给LoadApplication(new App(myData)).

所以为此,我已经MainActivity为Android和AppDelegateiOS 编写了代码.

一切都适用于Android; 即HandleNotificationOpened()获取additionalData并传递给它LoadApplication(new App(myData)).

但是在iOS中,当我打开通知时,HandleNotificationOpened()代码不会被调用.

AppDelegate.cs

static string s = null;

public override bool FinishedLaunching(UIApplication app, NSDictionary options)
{
    OneSignal.Current.StartInit("MyKey").HandleNotificationOpened(HandleNotificationOpened).EndInit();

    if(s!=null)
    {
        LoadApplication(new App(s));
    }
    else
    {
        LoadApplication(new App("myUrl.lasso")); 
    }

    return base.FinishedLaunching(app, options);
}

private static void HandleNotificationOpened(OSNotificationOpenedResult result)
{
    OSNotificationPayload payload = result.notification.payload;
    Dictionary<string, object> additionalData = payload.additionalData;

    if (additionalData != null)
    {
        if (additionalData.ContainsKey("url_direct"))
        {
            s = additionalData["url_direct"].ToString();
            System.Diagnostics.Debug.WriteLine("We need to redirect it to: " + s);
        }
    }
}

Answer 1

回答

覆盖DidReceivedRemoteNotification eventin AppDelegate.

码

public override void DidReceiveRemoteNotification(UIApplication application, NSDictionary userInfo, System.Action<UIBackgroundFetchResult> completionHandler)
{
    base.DidReceiveRemoteNotification(application, userInfo, completionHandler);

    NSDictionary aps = userInfo.ObjectForKey(new NSString("aps")) as NSDictionary;

    string alert = string.Empty;
    if (aps.ContainsKey(new NSString("alert")))
        alert = (aps [new NSString("alert")] as NSString).ToString();

    if (application.ApplicationState == UIApplicationState.Active)
    {
        //app is currently active, you can get your payload (userInfo) data here
    }
    else if (application.ApplicationState == UIApplicationState.Background)
    {
        //app is in background, you can get your payload (userInfo)
    }
    else if (application.ApplicationState == UIApplicationState.Inactive)
    {
        //app is transitioning from background to foreground (user taps notification), do what you need when user taps here, you can get your payload (userInfo)
    }
}

Answer 2

我找到了解决方法。实际上，我们无法捕获 AppDelegate 的 finishLaunching() 上的通知点击，这就是 HandleNotificationOpened(HandleNotificationOpened) 在 iOS 中无法正常工作的原因。所以我在PCL公共文件夹App类上实现了它。