/**
* Find and return an existing ImageCache stored in a {@link RetainFragment}, if not found a new
* one is created using the supplied params and saved to a {@link RetainFragment}.
*
* @param activity The calling {@link FragmentActivity}
* @param cacheParams The cache parameters to use if creating the ImageCache
* @return An existing retained ImageCache object or a new one if one did not exist
*/
public static ImageCache findOrCreateCache(
final FragmentActivity activity, ImageCacheParams cacheParams) {
// Search for, or create an instance of the non-UI RetainFragment
final RetainFragment mRetainFragment =
RetainFragment.findOrCreateRetainFragment(activity.getSupportFragmentManager());
// See if we already have an ImageCache stored in RetainFragment
ImageCache imageCache = (ImageCache) mRetainFragment.getObject();
// No existing ImageCache, create one and store it in RetainFragment
if (imageCache == null) {
imageCache = new ImageCache(activity, cacheParams);
mRetainFragment.setObject(imageCache);
}
return imageCache;
}
