Android删除相册得最近拍得一张图片

   private void deleteLatestPhoto() {        String[] projection = new String[] { MediaStore.Images.ImageColumns._ID,                MediaStore.Images.ImageColumns.DATE_TAKEN };        Cursor cursor = managedQuery(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, projection,                null, null, MediaStore.Images.ImageColumns.DATE_TAKEN + " DESC");        if (cursor != null) {            cursor.moveToFirst();            ContentResolver cr = mContext.getContentResolver();            cr.delete(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,                    BaseColumns._ID + "=" + cursor.getString(0), null);        }    }