迁移到sdk 30 android 11后获取额外空间

// 查询图片
Uri collection;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
    collection = MediaStore.Images.Media.getContentUri(MediaStore.VOLUME_EXTERNAL);
} else {
    collection = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
}

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

String sortOrder = MediaStore.Images.Media.DATE_TAKEN + " DESC";

Cursor cursor = getContentResolver().query(collection, projection, null, null, sortOrder);

if (cursor != null) {
    while (cursor.moveToNext()) {
        long id = cursor.getLong(cursor.getColumnIndexOrThrow(MediaStore.Images.Media._ID));
        String displayName = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DISPLAY_NAME));
        // 处理图片
    }
    cursor.close();
}