Use @FocusState and @Binding To Control TextField Focus From Any Other View
Daily Coding Tip 123
@FocusState is an interesting property wrapper that works differently to @State and @Binding. Setting the value of a Boolean @FocusState called focused to true has no effect unless a TextField has a .focused($focused) modifier. Since it doesn’t work as a Binding, we can’t control this property from elsewhere. I came up with a somewhat hacky workaround for this, but it makes @FocusState a lot more useful in my opinion.
Yes, I’m using an onChange modifier to change the local @FocusState according to an external @Binding.
When I want to use it elsewhere, I simply pass a Binding to the initialiser of FocusableTextField:
Now I can use a Toggle to control the @FocusState of the TextField, even though it doesn’t exist in the same view.