People -
I am trying to implement a Gallery widget that displays an ArrayList of images, and I started with Hello, an example gallery on the dev site. This part works great.
I need the gallery to display an empty view (a special view when the ArrayList has no content), but I cannot get Gallery to do this. I have done this with ListView and other adapters in the past, but I cannot get it to work with Gallery. What do I need to override / implement in an adapter, gallery, or both to display an empty view? This is my adapter code:
public class ImageAdapter extends BaseAdapter {
int mGalleryItemBackground;
private Context mContext;
private ArrayList<Drawable> images;
public ImageAdapter(Context c) {
mContext = c;
TypedArray a = c.obtainStyledAttributes(R.styleable.Gallery1);
mGalleryItemBackground = a.getResourceId(R.styleable.Gallery1_android_galleryItemBackground, 0);
a.recycle();
images = new ArrayList<Drawable>();
}
public void addImage(Drawable d) {
images.add(d);
}
public boolean isEmpty() {
return getCount() == 0;
}
public int getCount() {
return images.size();
}
public Drawable getItem(int position) {
return images.get(position);
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View contentView, ViewGroup parent) {
ImageView i = new ImageView(mContext);
i.setImageDrawable(images.get(position));
i.setLayoutParams(new Gallery.LayoutParams(160, 120));
i.setScaleType(ImageView.ScaleType.FIT_XY);
i.setBackgroundResource(mGalleryItemBackground);
return i;
}
}
ArrayList, getCount() ( 0), Gallery isEmpty, getEmptyView() , , BaseAdapter, ?
!