Android 11作用域存储权限

Uri collection;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
    collection = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
} else {
    collection = MediaStore.Images.Media.EXTERNAL_CONTENT_URI.buildUpon().appendQueryParameter("images", "true").build();
}

Cursor cursor = getContentResolver().query(collection, null, null, null, null);
if (cursor != null) {
    while (cursor.moveToNext()) {
        String displayName = cursor.getString(cursor.getColumnIndex(MediaStore.Images.Media.DISPLAY_NAME));
        Uri uri = Uri.withAppendedPath(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, cursor.getString(cursor.getColumnIndex(MediaStore.Images.Media._ID)));
        // 处理文件
    }
    cursor.close();
}

Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
intent.addCategory(Intent.CATEGORY_OPENABLE);
intent.setType("*/*");
startActivityForResult(intent, REQUEST_CODE);

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent resultData) {
    if (requestCode == REQUEST_CODE && resultCode == Activity.RESULT_OK) {
        if (resultData != null) {
            Uri uri = resultData.getData();
            // 处理文件
        }
    }
}