/**
* Default constructor for a subclass of BaseAdapter. This constructor also creates a reference to
* a singleton <code>imageCache</code>.
*
* @param context the context
* @param resource the reference to the resource
* @param items the items to wrap in a view
*/
public AdvertisementsAdapter(Context context, int resource, List<Advertisement> items) {
super();
this.context = context;
this.resource = resource;
this.advertisements = (ArrayList<Advertisement>) items;
imageCache = AssetCache.getInstance(context);
}
/**
* Creates or finds a view.
*
* <p>The view includes an image, which is provided to the view from the <code>imageCache</code>.
*
* @param position the position in the <code>List<T></code>
* @param convertView the view to be presented
* @param parent the parent of the view to be presented
* @return the view to be presented
*/
@Override
public View getView(int position, View convertView, ViewGroup parent) {
LinearLayout itemView;
if (convertView == null) {
itemView = new LinearLayout(context);
String inflater = Context.LAYOUT_INFLATER_SERVICE;
LayoutInflater li;
li = (LayoutInflater) context.getSystemService(inflater);
li.inflate(resource, itemView, true);
LinearLayout.LayoutParams linearLayoutParams =
new LinearLayout.LayoutParams(
parent.getWidth() / ConstantsHelper.NUMBER_OF_COLUMNS_IN_GRID,
parent.getWidth() / ConstantsHelper.NUMBER_OF_COLUMNS_IN_GRID);
itemView.setLayoutParams(new GridView.LayoutParams(linearLayoutParams));
itemView.setPadding(5, 5, 5, 5);
} else {
itemView = (LinearLayout) convertView;
}
Advertisement advertisement = getItem(position);
itemView.setTag(advertisement.id);
TextView titleView = (TextView) itemView.findViewById(R.id.advertisement_title);
ImageView imageView = (ImageView) itemView.findViewById(R.id.advertisement_image);
titleView.setText(advertisement.title);
String imagePath = advertisement.url;
if (imagePath.matches("^http.*")) imagePath = "http";
Bitmap bitmap;
synchronized (imageCache) {
bitmap = imageCache.get(imagePath);
}
imageView.setImageBitmap(bitmap);
return itemView;
}