protected void findImages(boolean internal, int howMany, LinkedList<ImageData> foundImages) {
Uri uri =
internal
? MediaStore.Images.Media.INTERNAL_CONTENT_URI
: MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
String[] projection = {
MediaStore.Images.Media.DATA,
MediaStore.Images.Media.ORIENTATION,
MediaStore.Images.Media.BUCKET_ID,
MediaStore.Images.Media.BUCKET_DISPLAY_NAME
};
String selection = "";
for (String id : getFoundAlbums()) {
if (isInternalId(id) == internal && mSettings.isAlbumEnabled(id)) {
String[] parts = id.split(":");
if (parts.length > 1) {
if (selection.length() > 0) {
selection += " OR ";
}
selection += MediaStore.Images.Media.BUCKET_ID + " = '" + parts[1] + "'";
}
}
}
if (selection.isEmpty()) {
return;
}
Cursor cursor = mResolver.query(uri, projection, selection, null, null);
if (cursor != null) {
int dataIndex = cursor.getColumnIndex(MediaStore.Images.Media.DATA);
if (cursor.getCount() > howMany && mLastPosition == INVALID) {
mLastPosition = pickRandomStart(cursor.getCount(), howMany);
}
cursor.moveToPosition(mLastPosition);
if (dataIndex < 0) {
log(TAG, "can't find the DATA column!");
} else {
while (foundImages.size() < howMany && cursor.moveToNext()) {
ImageData data = unpackImageData(cursor, null);
data.uri = uri;
foundImages.offer(data);
mLastPosition = cursor.getPosition();
}
if (cursor.isAfterLast()) {
mLastPosition = -1;
}
if (cursor.isBeforeFirst()) {
mLastPosition = INVALID;
}
}
cursor.close();
}
}
