XMLActivity.kt

val intent = Intent(Intent.ACTION_OPEN_DOCUMENT).apply {
  type = "image/*" //"application/pdf" // "*/*"
  putExtra(Intent.EXTRA_MIME_TYPES, arrayOf("image/*")) // required in some android versions. also good if you set type as */* and want to filter mimetypes
  addCategory(Intent.CATEGORY_OPENABLE)
  addFlags(Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION or Intent.FLAG_GRANT_READ_URI_PERMISSION)// optional for our app, but required if you intend to save the  SAF content uris(temporary by nature) in databases
}
getFileFromSystem.launch(intent)