How to Access Data or Data Folder in an Android Device?

import android.content.Intent
import android.os.Bundle
import android.provider.MediaStore
import android.widget.Toast
import androidx.activity.result.ActivityResultLauncher
import androidx.activity.result.contract.ActivityResultContracts
import androidx.appcompat.app.AlertDialog
import androidx.appcompat.app.AppCompatActivity
import androidx.core.app.ActivityCompat
import com.example.accessdata.databinding.ActivityMainBinding

// In this project we used VIEW BINDING

class MainActivity : AppCompatActivity() {
    private var binding: ActivityMainBinding? = null

    // creating an variable for view binding it create an activity
    // result launcher to open an intent i.e. To Open Gallery
    val openGallery: ActivityResultLauncher<Intent> = registerForActivityResult(
        ActivityResultContracts.StartActivityForResult()) { result ->
        // Here we get the result return from the lambda function get the returned result from the 
        // lambda and check the result code and the data returned and check the result code as 
        // (result.resultCode==RESULT_OK) and check the data to be not null (result.data!=null)
        if (result.resultCode === RESULT_OK && result.data != null) {
            binding?.background?.setImageURI(result.data?.data)
        }
    }

    // Here we create an ActivityResultLauncher with MultiplePermissions so we can request for
    // multiple permission like location storage etc For this project we use only storage permission
    private val requestPermission: ActivityResultLauncher<Array<String>> = registerForActivityResult(
        ActivityResultContracts.RequestMultiplePermissions()) { permissions ->
        // Here it returns a Map of permission name as key with boolean as value
        // we have to loop through the MAP and get the value i,e MAP<String,Boolean>
        permissions.entries.forEach() {
            // ig the intent launcher here we created above launch the pick intent
            // i.e. Opening gallery openGallery.key gives us the name of the permission
            val permissionName = it.key
            // Here it store whether our permission granted or not in boolean value i,e: True or False
            val isGranted = it.value
            // if permission is granted show a toast and perform operation i,e; ACCESSING THE GALLERY
            if (isGranted) {
                Toast.makeText(this, "Permission is granted for accessing gallery", Toast.LENGTH_LONG).show()
                // Here we create an intent to pick image from external storage
                var intent = Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI)
                // it will gives the image path by using .launch(intent)
            } else {
                // Here we use array of permission so we have to check whether the specific permission is granted or not
                if (permissionName == android.Manifest.permission.READ_EXTERNAL_STORAGE) {
                    Toast.makeText(this, "You denied the permission", Toast.LENGTH_LONG).show()
                }
            }
        }
    }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        binding = ActivityMainBinding.inflate(layoutInflater)
        setContentView(binding?.root)
        // set the content view by view binding applying OnClickListener to the Access Images Button
        binding?.btnAccess?.setOnClickListener {
            requestStoragePermission()
        }
    }

    // It Shows rationale dialog for displaying why the app needs permission
    // Only shown if the user has denied the permission request previously
    private fun showRationaleDialog(title: String, message: String) {
        val builder: AlertDialog.Builder = AlertDialog.Builder(this)
        builder.setTitle(title).setMessage(message).setPositiveButton("Cancel") { dialog, _ ->
                dialog.dismiss()
            }
        builder.create().show()
    }

    // Here we create a method to request Storage permission
    private fun requestStoragePermission() {
        // Here we Check if the permission was denied and show rationale
        if (ActivityCompat.shouldShowRequestPermissionRationale(this, android.Manifest.permission.READ_EXTERNAL_STORAGE)) {
            // Here We call the rationale dialog to tell the user why they need to allow permission request
            showRationaleDialog("Drawing App", "Drawing app needs to access your external storage")
        } else {
            // Here we can add multiple permission but for this project only add storage permission 
            // to access the data i,e:android.Manifest.permission.READ_EXTERNAL_STORAGE since it is 
            // an array of permission you can add multiple permission as per your requirements
            requestPermission.launch(arrayOf(android.Manifest.permission.READ_EXTERNAL_STORAGE))
        }
    }
}