Please Add the position of the icon to change in TextButton.icon by default is on the left and side and there is no way to change it.

Usecase

Suppose we have a view pager with two buttons on the bottom. One with the Previous button and One with the Next Button aligned in a row

TextButton.icon(
    onPressed: () {},
    style: ButtonStyle(),
    label: Text("Next"),
    icon: Icon(Icons.arrow_forward_ios_rounded),
)