PutExtra值没有通过使用xamarin表单和android的推送通知传递给mainactivity

Question

我目前的目标是在点击成功收到的推送通知后将应用程序打开到参与者页面。 一旦我掌握了基础知识，我就会发送一个id。 由于某种原因，在点击通知后，id不会被传递回mainactivity。

BroadcastReciever类发送推送通知

 var uiIntent = new Intent(this, typeof(MainActivity));
 uiIntent.PutExtra("param", "54");
 var pendingIntent = PendingIntent.GetActivity(this, 0, uiIntent, 0);

主要活动 - onCreate

        string parameterValue = this.Intent.GetStringExtra("param");
        if (parameterValue != null)
        {
            LoadApplication(new App(parameterValue));
        }
        else
        {
            LoadApplication(new App(null));
        }

似乎很简单，但我的参数值总是空的任何想法谢谢

UPDATE

 private void CreateNotification(string title, string desc)
    {
        //Create notification
        var notificationManager = GetSystemService(Context.NotificationService) as NotificationManager;

        Intent startupIntent = new Intent(this, typeof(MainActivity));
        startupIntent.PutExtra("param", "54");
        Android.App.TaskStackBuilder stackBuilder = Android.App.TaskStackBuilder.Create(this);
        stackBuilder.AddParentStack(Java.Lang.Class.FromType(typeof(MainActivity)));
        stackBuilder.AddNextIntent(startupIntent);
        const int pendingIntentId = 0;
        PendingIntent pendingIntent =
                       stackBuilder.GetPendingIntent(pendingIntentId, PendingIntentFlags.OneShot);

      //  var pendingIntent = PendingIntent.GetActivity(this, 0, startupIntent, 0);


        ////Create an intent to show ui
        //var uiIntent = new Intent(this, typeof(MainActivity));
        //uiIntent.PutExtra("param", "54");
        //var pendingIntent = PendingIntent.GetActivity(this, 0, uiIntent, 0);


        //Create the notification using Notification.Builder
        //Use Android Compatibility Apis

        var notification = new NotificationCompat.Builder(this).SetContentTitle(title)
            .SetSmallIcon(Android.Resource.Drawable.SymActionEmail)
            //we use the pending intent, passing our ui intent over which will get called
            //when the notification is tapped.
            .SetContentIntent(pendingIntent)
            .SetContentText(desc)
            .SetSound(RingtoneManager.GetDefaultUri(RingtoneType.Notification))

             //Auto cancel will remove the notification once the user touches it
             .SetAutoCancel(true).
            Build();


        //Show the notification
        if (notificationManager != null)
        {
            notificationManager.Notify(1, notification);
        }
    }

使用不同方法的完整方法但仍然没有将值传递给mainactivity。 总是有空？

Answer 1

这就是它对我有用的原因。

最初是RegisterInGcm（）; 高于parameterValue但在下面移动它使它工作。

//RegisterInGcm(); Wrong

        string parameterValue = this.Intent.GetStringExtra("param");
        if (parameterValue != null)
        {
             LoadApplication(new App(parameterValue));
        }
        else
        {
            LoadApplication(new App(null));
        }

        RegisterInGcm();

疯狂的简单改变，很多测试要做!!

Answer 2

PendingIntentFlags.UpdateCurrent应该可以工作。 请参阅PendingIntent中的更多信息， 不发送Intent附加信息

PendingIntent pending = PendingIntent.GetActivity(context, 0, mailDetail, PendingIntentFlags.UpdateCurrent);