Created
July 24, 2012 16:59
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tag contextview in getview.
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private class ViewHolder : Java.Lang.Object | |
{ | |
public TextView lbCodigo; | |
public TextView lbNombre; | |
public TextView lbPrecio; | |
public ProgressBar pbImagen; | |
public ImageView ivImagen; | |
public int position; | |
} | |
public override View GetView(int position, View convertView, ViewGroup parent) | |
{ | |
ViewHolder holder; | |
AdapterArticuloConsultaItem item; | |
string path; | |
bool encontrado = false; | |
Bitmap bMap = null; | |
if (convertView == null) | |
{ | |
convertView = lif.Inflate(Resource.Layout.AArticuloConsultarItem, null); | |
holder = new ViewHolder(); | |
holder.lbCodigo = convertView.FindViewById<TextView>(Resource.AArticuloConsultarItem.lbCodigo); | |
holder.lbNombre = convertView.FindViewById<TextView>(Resource.AArticuloConsultarItem.lbNombre); | |
holder.lbPrecio = convertView.FindViewById<TextView>(Resource.AArticuloConsultarItem.lbPrecio); | |
holder.pbImagen = convertView.FindViewById<ProgressBar>(Resource.AArticuloConsultarItem.progressBar1); | |
holder.ivImagen = convertView.FindViewById<ImageView>(Resource.AArticuloConsultarItem.imageView1); | |
holder.position = position; | |
convertView.Tag = (ViewHolder)holder; | |
//convertView.SetTag(Resource.Layout.AArticuloConsultarItem, holder); | |
} | |
else | |
{ | |
holder = (ViewHolder)convertView.GetTag(0); | |
} | |
#region Poner valores a controles | |
item = (AdapterArticuloConsultaItem)items[position]; | |
holder.lbCodigo.Text = item.Codigo; | |
holder.lbNombre.Text = item.Nombre; | |
holder.lbPrecio.Text = item.Precio.ToString(); | |
path = System.IO.Path.Combine(System.IO.Path.Combine(DDOL.MFile.SharedFolder(), "catalogo"), item.Codigo) + ".jpg"; | |
ThreadPool.QueueUserWorkItem((object state) => | |
{ | |
//Background | |
if (System.IO.File.Exists(path)) | |
{ | |
bMap = Bitmap.CreateScaledBitmap(DecodeFile(path), 200, 200, true); | |
encontrado = true; | |
} | |
//Hiño principal | |
Android.App.Application.SynchronizationContext.Post(_ => | |
{ | |
if (encontrado) | |
{ | |
holder.ivImagen.SetImageBitmap(bMap); | |
bMap.Dispose(); | |
} | |
else | |
holder.ivImagen.SetImageResource(Resource.Drawable.NoImagen); | |
holder.pbImagen.Visibility = ViewStates.Gone; | |
this.NotifyDataSetChanged(); | |
}, null); | |
}); | |
#endregion | |
return convertView; | |
} |
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PORT TO C#
private static class ThumbnailTask extends AsyncTask {
private int mPosition;
private ViewHolder mHolder;
}