void OnSendClicked(object sender, EventArgs e)
        {
            Toast.MakeText(this, "Sende WallPost", ToastLength.Short).Show();

            var post = CreateWallPost();

            new Thread(() =>
                       _newsfeedMessageProcessor.PostSingleNewsfeed(post)).Start();
        }
        void OnSendClicked(object sender, EventArgs e)
        {
            if (App.bitmap == null || String.IsNullOrEmpty(inpText.Text))
            {
                Toast.MakeText(this, "Kein Text, kein Bild, kein Post ;)", ToastLength.Long).Show();
                return;
            }

            WallPost post = CreateWallPost();

            _newsfeedMessageProcessor.PostSingleNewsfeed(post);
            _newsfeedRepository.DeleteAllWallPosts();
            Toast.MakeText(this, "Posted", ToastLength.Short).Show();
            App.bitmap = null;
            Finish();
        }