如何从 OneSignal HandleNotification 启动 Intent 在 Visual Studio 中使用 Xamarin 打开

Question

我尝试在 Android 应用程序中使用 OneSignal，它是使用 VS 和 Xamarin（不是 Xamarin Forms）创建的。它工作正常，但我无法实现某些功能。应用程序可以获得 3 种不同类型的推送通知。当应用程序获得第一种类型时，它仅更改全局变量。当应用程序获得 2-nd 和 3-rd 时，它需要启动特定的意图。在 iOS 应用程序中，我找到了解决方案，但在 Android 中，我发现解决方案仅适用于已关闭的应用程序，但不适用于后台应用程序。我无法从“HandleNotificationOpened”函数开始意图。任何人都可以帮我解决这个问题。 代码如下：

public class SplashActivity : Activity{
    static bool isNotify=false;
    static string messageAct = "";
    protected override void OnCreate(Bundle savedInstanceState)
    {

        OneSignal.Current.StartInit("mykey")
            .InFocusDisplaying(OSInFocusDisplayOption.None)
            .HandleNotificationOpened(HandleNotificationOpened)
            .EndInit();
        OneSignal.Current.IdsAvailable(IdsAvailable);
        base.OnCreate(savedInstanceState);
    }
    protected override void OnResume()
    {
        base.OnResume();
        Intent notificationIntent;
        if(isNotify){
            if(messageAct="1"){
                notificationIntent = new Intent(this, typeof(ProfileActivity));
            }
            if(messageAct="2"){
                notificationIntent = new Intent(this, typeof(NotificationsActivity));
            }
            else{
                notificationIntent = new Intent(this, typeof(MainActivity));
            }
        }
        else{
            notificationIntent = new Intent(this, typeof(MainActivity));
        }
        StartActivity(notificationIntent);
    }
    private static void HandleNotificationOpened(OSNotificationOpenedResult result)
    {
        OSNotificationPayload payload = result.notification.payload;
        Dictionary<string, object> additionalData = payload.additionalData;
        string message = payload.body;
        if (additionalData != null)
        {
            isNotify = true;
            if (additionalData.ContainsKey("act"))
            {
                messageAct = additionalData["act"].ToString();
            }
        }
    }
}

Answer 1

看起来它需要为每个Activity添加OneSignal Init和HandleNotificationOpen。​​

另一种解决方案，正如Joe Lv 建议的那样，创建 BaseActivity 类，扩展 Activity，在该类中添加 OneSignal Init 和 HandleNotificationOpen，并将其用于应用程序中的其他活动而不是 Activity。看起来像这样：

public class BaseActivity : Activity{
        static bool isNotify=false;
        static string messageAct = "";
        protected override void OnCreate(Bundle savedInstanceState)
        {
            OneSignal.Current.StartInit("mykey")
                .InFocusDisplaying(OSInFocusDisplayOption.None)
                .HandleNotificationOpened(HandleNotificationOpened)
                .EndInit();
            OneSignal.Current.IdsAvailable(IdsAvailable);
            base.OnCreate(savedInstanceState);
        }
        protected override void OnResume()
        {
            base.OnResume();
            Intent notificationIntent;
            if(isNotify){
                if(messageAct="1"){
                    notificationIntent = new Intent(this, typeof(ProfileActivity));
                }
                if(messageAct="2"){
                    notificationIntent = new Intent(this, typeof(NotificationsActivity));
                }
                else{
                    notificationIntent = new Intent(this, typeof(MainActivity));
                }
            }
            else{
                notificationIntent = new Intent(this, typeof(MainActivity));
            }
            StartActivity(notificationIntent);
        }
        private static void HandleNotificationOpened(OSNotificationOpenedResult result)
        {
            OSNotificationPayload payload = result.notification.payload;
            Dictionary<string, object> additionalData = payload.additionalData;
            string message = payload.body;
            if (additionalData != null)
            {
                isNotify = true;
                if (additionalData.ContainsKey("act"))
                {
                    messageAct = additionalData["act"].ToString();
                }
            }
        }
    }

    public class ActivityOne : BaseActivity{
        // do ActivityOne stuff
    }


    public class ActivityTwo : BaseActivity{
        // do ActivityTwo stuff
    }