Ok, I figured it out. ImageLoaderConfiguration has an option where you can pass in an image decoder.
Here is how I changed the initialization:
ImageDecoder smartUriDecoder = new SmartUriDecoder(getContentResolver(), new BaseImageDecoder(false));
ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(getApplicationContext())
.taskExecutor(ThreadPool.getExecutorService())
.defaultDisplayImageOptions(displayOptions)
.imageDecoder(smartUriDecoder)
.build();
And the SmartUriDecoder class:
public class SmartUriDecoder implements ImageDecoder {
private final ContentResolver m_contentResolver;
private final BaseImageDecoder m_imageUriDecoder;
public SmartUriDecoder(ContentResolver contentResolver, BaseImageDecoder imageUriDecoder) {
if (imageUriDecoder == null) {
throw new NullPointerException("Image decoder can't be null");
}
m_contentResolver = contentResolver;
m_imageUriDecoder = imageUriDecoder;
}
@Override
public Bitmap decode(ImageDecodingInfo info) throws IOException {
if (TextUtils.isEmpty(info.getImageKey())) {
return null;
}
String cleanedUriString = cleanUriString(info.getImageKey());
Uri uri = Uri.parse(cleanedUriString);
if (isVideoUri(uri)) {
return makeVideoThumbnail(info.getTargetSize().getWidth(), info.getTargetSize().getHeight(), getVideoFilePath(uri));
}
else {
return m_imageUriDecoder.decode(info);
}
}
private Bitmap makeVideoThumbnail(int width, int height, String filePath) {
if (filePath == null) {
return null;
}
Bitmap thumbnail = ThumbnailUtils.createVideoThumbnail(filePath, MediaStore.Video.Thumbnails.MINI_KIND);
Bitmap scaledThumb = scaleBitmap(thumbnail, width, height);
thumbnail.recycle();
return scaledThumb;
}
private boolean isVideoUri(Uri uri) {
String mimeType = m_contentResolver.getType(uri);
return mimeType.startsWith("video/");
}
private String getVideoFilePath(Uri uri) {
String columnName = MediaStore.Video.VideoColumns.DATA;
Cursor cursor = m_contentResolver.query(uri, new String[] { columnName }, null, null, null);
try {
int dataIndex = cursor.getColumnIndex(columnName);
if (dataIndex != -1 && cursor.moveToFirst()) {
return cursor.getString(dataIndex);
}
}
finally {
cursor.close();
}
return null;
}
private Bitmap scaleBitmap(Bitmap origBitmap, int width, int height) {
float scale = Math.min(
((float)width) / ((float)origBitmap.getWidth()),
((float)height) / ((float)origBitmap.getHeight())
);
return Bitmap.createScaledBitmap(origBitmap,
(int)(((float)origBitmap.getWidth()) * scale),
(int)(((float)origBitmap.getHeight()) * scale),
false
);
}
private String cleanUriString(String contentUriWithAppendedSize) {
// replace the size at the end of the URI with an empty string.
// the URI will be in the form "content://....._256x256
return contentUriWithAppendedSize.replaceFirst("_\\d+x\\d+$", "");
}
}
In UIL's documentation it says that info.getImageKey() will return the original URI specified for this image, but with an appended size at the end, and I couldn't find a way to get the original URI. Hence the reason for cleanUriString()'s code smell.
