Solution: How to access Android/data or Android/obb folders in Android 11+ No root

AndroidManifest required permissions.xml

    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES"/>
    <uses-permission android:name="android.permission.REQUEST_DELETE_PACKAGES"/>

MainActivity.kt

//Call anywhere in your main code
if(Build.VERSION.SDK_INT>= Build.VERSION_CODES.R){
   requestAllFilesPermission()
   requestDocumentPermission("data")
   requestDocumentPermission("obb")
}
@RequiresApi(Build.VERSION_CODES.R)
    private fun requestAllFilesPermission(){
        val intent = Intent(Settings.ACTION_MANAGE_APP_ALL_FILES_ACCESS_PERMISSION)
        intent.addCategory("android.intent.category.DEFAULT")
        intent.data = Uri.fromParts("package",packageName,null)
        startActivity(intent)
    }
@RequiresApi(Build.VERSION_CODES.Q)
    private fun requestDocumentPermission(folder: String) {
            val storageManager = application.getSystemService(Context.STORAGE_SERVICE) as StorageManager
            val intent =  storageManager.primaryStorageVolume.createOpenDocumentTreeIntent()
            val targetDirectory = "Android%2F$folder" // add your directory to be selected by the user
            var uri = intent.getParcelableExtra<Uri>("android.provider.extra.INITIAL_URI") as Uri
            var scheme = uri.toString()
            scheme = scheme.replace("/root/", "/document/")
            scheme += "%3A$targetDirectory"
            uri = Uri.parse(scheme)
            intent.putExtra("android.provider.extra.INITIAL_URI", uri)
            startActivityForResult(intent, REQUEST_CODE)

    }
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
        super.onActivityResult(requestCode, resultCode, data)
        if (resultCode == RESULT_OK && requestCode == REQUEST_CODE) {
            if (data != null) {
                data.data?.let { treeUri ->

                    // treeUri is the Uri of the file

                    // if life long access is required the takePersistableUriPermission() is used

                    contentResolver.takePersistableUriPermission(
                        treeUri,
                        Intent.FLAG_GRANT_READ_URI_PERMISSION or
                                Intent.FLAG_GRANT_WRITE_URI_PERMISSION
                    )

                    readSDK30(treeUri)
                }
            }
        }
    }
    private fun readSDK30(treeUri: Uri) {
        val tree = DocumentFile.fromTreeUri(this, treeUri)!!
            val uriList  = arrayListOf<Uri>()
            listFiles(tree).forEach { uri ->
                uriList.add(uri)
                Log.i("Uri Log:",uri.toString())
                // Collect all the Uri from here
            }
    }
    private fun listFiles(folder: DocumentFile): List<Uri> {
        return if (folder.isDirectory) {
            folder.listFiles().mapNotNull { file ->
                if (file.name != null) file.uri else null
            }
        } else {
            emptyList()
        }
    }
    
// For more access to documents visit here: https://developer.android.com/training/data-storage/shared/documents-files#examine-metadata