TextField - disable after first entry?

Using Swift
,
1

I have a textfield that a user will enter a starting number in. How do I then ensure this field is locked, and the initial entry is retained please?

2

I think this can be achieved with a combination of @FocusState, .onChange(of:perform:) and .disabled(_:) :slight_smile:

3

Thanks Henrik. I will give those a go.