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PODisplay Empty View in Android Gallery
 

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    <p>Folks -</p> <p>I'm trying to implement a Gallery widget that displays an ArrayList of images, and I have started with the <a href="http://developer.android.com/guide/tutorials/views/hello-gallery.html" rel="nofollow noreferrer">Hello, Gallery example</a> on the dev site. This part is all working great.</p> <p>I need to have the gallery display an empty view (a special view when the ArrayList has no contents), but I cannot seem to get the Gallery to do this. I have done this with ListView and other AdapterViews in the past, but I cannot get it to work with Gallery. What do I need to override/implement in the Adapter, Gallery, or both to get an empty view displayed? This is my adapter code:</p> <pre><code>public class ImageAdapter extends BaseAdapter { int mGalleryItemBackground; private Context mContext; private ArrayList&lt;Drawable&gt; 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&lt;Drawable&gt;(); } 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; } } </code></pre> <p>When the view is to be displayed with an empty ArrayList, getCount() does get called (returning 0), but the Gallery never checks isEmpty, and when I had defined <code>getEmptyView()</code> in the Gallery, it was never called either. Did I miss another required method in BaseAdapter to properly notify the empty state?</p> <p>Thanks!</p>
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    1. COAddendum: I found the setEmptyView(View emptyView) method (oops), which has allowed me to set a view on my Gallery that should display with an empty ArrayList, and now the empty status of the Adapter IS getting checked, but the view is still not displaying! Any ideas or thoughts?
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