Android - Get gallery images Samsung S4/S5

Question

I'm working on a custom image gallery for my application but I got a serious issue under Samsung Galaxy S4 and S5. The following code works great on HTC and Xperia devices but not at all on Samsung ones.

Basically, the pathes are always null on these devices. Here is the code I made. In big lines, it returns a list of categories containing a name and a list of images. The aim is to provide a folder based gallery like the native one.

Should you have any idea why it fails on Samsung galaxy ?

Thanks for your help.

public List<Category> getCategories()
{
    Map<String, Category> map = new HashMap<String, Category>();

    String[] projection = new String[] {
        MediaStore.Images.Media._ID,
        MediaStore.Images.Media.BUCKET_DISPLAY_NAME,
    };

    ContentResolver cr = getContentResolver();
    Cursor cur = cr.query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, projection, null, null, MediaStore.Images.Media.DATE_TAKEN + " DESC");
    if (cursor == null) return;

    if (cur.moveToFirst())
    {
        Category category = null;
        long id = 0L;
        String bucket = null;;
        int idColumn = cur.getColumnIndex(MediaStore.Images.Media._ID);
        int bucketColumn = cur.getColumnIndex(MediaStore.Images.Media.BUCKET_DISPLAY_NAME);

        do
        {
            id = cur.getLong(idColumn);
            bucket = cur.getString(bucketColumn);

            if (map.get(bucket) == null)
            {
                category = new Category(bucket);
                map.put(bucket, category);
            }
            category = map.get(bucket);

            category.addImage( idToImage(id) );
        }
        while (cur.moveToNext());
    }

    return map.values().toArray();
}

private Image idToImage(long id)
{
    Image image = new Image();

    image.setThumbnail( getThumbnail(id) );
    image.setImage( getImage(id) );

    return image;
}

private String getThumbnail(long id)
{
    String path = null;
    Cursor cursor = MediaStore.Images.Thumbnails.queryMiniThumbnail(getContentResolver(), id, MediaStore.Images.Thumbnails.MINI_KIND, null);
    if( cursor != null && cursor.getCount() > 0 )
    {
        cursor.moveToFirst();
        path = cursor.getString( cursor.getColumnIndex( MediaStore.Images.Thumbnails.DATA ) );
        cursor.close();
    }

    return path;
}

private String getImage(long id)
{
    String path = null;
    String[] projection = {MediaStore.Images.Media.DATA};
    String where = MediaStore.Images.Media._ID + " = " + id;
    Cursor cursor = getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, projection, where, null, null);
    int dataColumn = cursor.getColumnIndex(MediaStore.Images.Media.DATA);
    if( cursor != null && cursor.getCount() > 0 )
    {
        cursor.moveToFirst();
        path = cursor.getString(dataColumn);
    }
    return path;
}

Answer 1

It will work

/**
 * Get actual file path from gallery
 */
public String getPath(Uri uri, Context ctx) {
    String[] projection = {MediaStore.Images.Media.DATA};
    String result;
    Cursor cursor = ctx.getContentResolver().query(uri, projection, null, null, null);
    if (cursor == null) {
        return null;
    }
    int column_index = cursor
            .getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
    cursor.moveToFirst();
    result = cursor.getString(column_index);
    cursor.close();
    return result;
}