selectAudio method

Implementation

void selectAudio() {
  if (Platform.isAndroid) {
    openCameraGallery();
  } else {
    dynamic per = [Permission.storage, Permission.audio];
    funCheckPermissions(arrayPer: per).then((value) {
      permissionResult(value);
    });
  }
  Util.trackActivities(path: 'Add Audio Screen -> Add Audio');
}