public int getItemCount() {
if (cachedCount == -1) {
Cursor cursor =
resolver.query(
getBaseUri(),
new String[] {"count(*)"},
MediaStore.Images.ImageColumns.BUCKET_ID + " = ?",
new String[] {String.valueOf(album.getId())},
null);
try {
cursor.moveToNext();
cachedCount = cursor.getInt(0);
} finally {
cursor.close();
}
}
return cachedCount;
}
public ArrayList<ImageItem> getMediaItem(int start, int count) {
ArrayList<ImageItem> images = new ArrayList<ImageItem>();
Uri uri = getBaseUri().buildUpon().appendQueryParameter("limit", start + "," + count).build();
Cursor cursor =
resolver.query(
uri,
ImageItem.PROJECTION,
MediaStore.Images.ImageColumns.BUCKET_ID + " = ?",
new String[] {String.valueOf(album.getId())},
MediaStore.Images.ImageColumns.DATE_TAKEN
+ " DESC, "
+ MediaStore.Images.ImageColumns._ID
+ " DESC");
try {
while (cursor.moveToNext()) {
ImageItem image = new ImageItem(cursor);
images.add(image);
}
} finally {
cursor.close();
}
return images;
}