[Activity(Label = "My Activity")]

    public class SearchActivity : Activity

    {

        protected override void OnCreate(Bundle bundle)

        {

            base.OnCreate(bundle);

            this.SetContentView(Resource.Layout.Hostlayout);

            var layout = this.FindViewById<LinearLayout>(Resource.Id.HomeImageContent);

            Handler hander = new Handler();

            List<string> urlSource = new List<string>();

            foreach (var item in urlSource)

            {

                var address = item;

                var taks = System.Threading.Tasks.Task.Factory.StartNew(() =>

                {

                    Runnable run = new Runnable(() =>

                    {

                        Java.Net.URL url = new Java.Net.URL(address);

                        var map = Android.Graphics.BitmapFactory.DecodeStream(url.OpenStream());

                        ImageView image = new ImageView(this);

                        image.SetImageBitmap(map);

                        layout.AddView(image);

                    });

                    hander.Post(run);

                });

            }

        }

    }