core/src/in/srain/cube/image/ImageLoader.java
public boolean queryCache(ImageTask imageTask, CubeImageView imageView) {
        if (null == mImageProvider) {
            return false;
        }
        BitmapDrawable drawable = mImageProvider.getBitmapFromMemCache(imageTask);

        if (imageTask.getStatistics() != null) {
            imageTask.getStatistics().s0_afterCheckMemoryCache(drawable != null);
        }
        if (drawable == null) {
            return false;
        }

        if (DEBUG) {
            CLog.d(LOG_TAG, MSG_HIT_CACHE, imageTask, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight());
        }
        imageTask.addImageView(imageView);
        imageTask.onLoadTaskFinish(drawable, mImageLoadHandler);
        return true;
    }
public boolean queryCache(ImageTask imageTask, CubeImageView imageView) {
        if (null == mImageProvider) {
            return false;
        }
        BitmapDrawable drawable = mImageProvider.getBitmapFromMemCache(imageTask);

        if (imageTask.getStatistics() != null) {
            imageTask.getStatistics().s0_afterCheckMemoryCache(drawable != null);
        }
        if (drawable == null) {
            return false;
        }

        if (DEBUG) {
            CLog.d(LOG_TAG, MSG_HIT_CACHE, imageTask, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight());
        }
        imageTask.addImageView(imageView);
        imageTask.onLoadTaskFinish(drawable, mImageLoadHandler);
        return true;
    }
Check weather this imageTask has cache Drawable data.