activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

   <Button
       android:id="@+id/button"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Request Access"
    android:onClick="onAccessClick"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintLeft_toLeftOf="parent"
    app:layout_constraintRight_toRightOf="parent"
    app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

MainActivity.java

package com.example.scopeddirectoryaccess;

import androidx.annotation.RequiresApi;
import androidx.appcompat.app.AppCompatActivity;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.os.storage.StorageManager;
import android.os.storage.StorageVolume;
import android.view.View;

public class MainActivity extends AppCompatActivity {

    private final int REQUEST_FOLDER_MUSIC=101;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }


    public void onAccessClick(View view) {

        StorageManager storageManager = (StorageManager) getSystemService(Context.STORAGE_SERVICE);
        StorageVolume storageVolume = storageManager.getPrimaryStorageVolume();
        Intent intent = storageVolume.createAccessIntent(Environment.DIRECTORY_MUSIC);
        startActivityForResult(intent, REQUEST_FOLDER_MUSIC);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        switch (requestCode) {
            case REQUEST_FOLDER_MUSIC:
                if (resultCode == Activity.RESULT_OK) {
                    getContentResolver().takePersistableUriPermission(data.getData(), 0);
                }
                break;
        }
    }
}