How to organize like/unlike work in Flutter?

Question

API

While working on the project, an interesting problem arose.
Namely, the post like system in Flutter.

There is input with request API = (isLiked = true/false ).

How to change like states on click. The obvious solution is:

if ( isLiked ) {
   setState((){
      _isliked = !isLiked
 })

does not fit, because the logic does not work already on the second click. (The original isLiked data does not change when clicked).
How to write this logic?

Answer 1

else? enum? what is the problem?