Flutter 我如何在不刷新我的 futurebuilder 的情况下使用 setState 事件

Question

I have a question.

At the moment i try to build a category list with data from firebase.

To load the data i use a futurebuilder.

Here my category list:

Now i want to implement a color change event if i click on a list element. For example, if i click on tree the element tree should change the color.

My problem:

I create a object for every category. If i try to change the color i use in futurebuilder a setState. The setState refresh my Object. How i can use a setState without reload my the futurebuilder?

Many thx (:

Answer 1

You can use this little trick. For example, this is your future:

Future<void> yourFuture async{
// do something
}

Use a final temp variable to store your future like this:

final temp = yourFuture;

Then use it in your FutureBuilder :

FutureBuilder(
future: temp,
builder: (context, snapshot){}
),