Samsung Galaxy S2 and S3 - ContentResolver query for MediaStore never returns images

Question

Currently developing an app which loads images from SD card. In the emulator the following works fine and finds images to display. However, on the Galaxy S2 and S3 - no images are ever displayed. Any ideas?

Cursor cursor = getContentResolver().query(
    MediaStore.Images.Media.EXTERNAL_CONTENT_URI, 
    { MediaStore.Images.Thumbnails._ID }, 
    null, 
    null, 
    MediaStore.Images.Media._ID
);

int columnIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.Media._ID);
int size        = cursor.getCount();
int imageId     = 0;

for (int i = 0; i < size; i++) {
     if(cursor.isClosed()) {
         continue;
     }
     cursor.moveToPosition(i);
     imageId = cursor.getInt(columnIndex);
     uri     = Uri.withAppendedPath(
         MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI, 
         Integer.toString(imageId)
     );

try {
    bitmap = BitmapFactory.decodeStream(getContentResolver().openInputStream(uri));

        if (bitmap != null) {
            newBitmap = Bitmap.createScaledBitmap(bitmap, 70, 70,true);
            bitmap.recycle();

            if (newBitmap != null) {
                publishProgress(newBitmap);
            }
        }
} catch (IOException e) {}
}
cursor.close();
return null;

Log exceptions in `catch (IOException e) {}` maybe there is one. — zapl, Nov 29 '12 at 00:49
Yeah, I thought that but I don't have the device available. I am guessing if I launch a dialog at least the end user will be able to see the message before we publish it to the store. — James, Nov 29 '12 at 09:36

score 0 · Answer 1 · answered Nov 29 '12 at 21:21

After testing on device found the following resolved the issue:

    BitmapFactory.Options options = new BitmapFactory.Options();
    options.outHeight = 70;
    options.outWidth = 70;
    Bitmap bitmap = null;

    Cursor cursor = getContentResolver().query(
        MediaStore.Images.Media.EXTERNAL_CONTENT_URI, 
        PROJECTION, 
        null, 
        null, 
        MediaStore.Images.Media._ID
    );
    int columnIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.Media._ID);
    int size        = cursor.getCount();

    for (int i = 0; i < size; i++) {
        if(cursor.isClosed()) {
            break;
        }
        cursor.moveToPosition(i);

        bitmap = MediaStore.Images.Thumbnails.getThumbnail(
            getContentResolver(), 
            cursor.getInt(columnIndex), 
            MediaStore.Images.Thumbnails.MICRO_KIND,  
            options
        );
        publishProgress(new LoadedImage(bitmap));
    }
    cursor.close();

Samsung Galaxy S2 and S3 - ContentResolver query for MediaStore never returns images

1 Answers1