java - 如何设置 MEDIASTORE 以从 android 上的特定文件夹获取图像

Question

所以我有这段代码可以通过 mediastore 获取图像:

int dataIndex = mMediaStoreCursor.getColumnIndex(MediaStore.Files.FileColumns.DATA );

mMediaStoreCursor.moveToPosition(position);
String dataString = mMediaStoreCursor.getString(dataIndex);
Uri mediaUri = Uri.parse("file://" + dataString);
return mediaUri;

这很好获取图片文件夹中的所有图像，我想更改它以获取特定文件夹中的所有图像，这将作为字符串传递。例如 { android/picture/specificfolder/>

Answer 1

val DIRECTORY_NAME = "%your_folder_name%"

val selection = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q)
    MediaStore.MediaColumns.RELATIVE_PATH + " like ? "
else MediaStore.Images.Media.DATA + " like ? "

val selectionArgs = arrayOf(APP_RESOURCE_DIRECTORY_NAME)

val cursor = context.contentResolver.query(
        MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
        null,
        selection,
        selectionArgs,
        null)