Flutter - 如何在不重新打开小部件的情况下更新文本字段的值？

Question

I have multiple TextFormField, all have their own value from a file.
My problem:
-when I change the value of the TextFormField, it changes the value of it's own parameter, but it only changes the other TextFormField(based on the same parameter) when I reopen that page.
I tried use setState, but I don't know what parameter should it have.
How should I use setState / what would be a better option? This is how I change the values:

onChanged: (value) => 
       { class.data.minimum = int.parse(value), 
           setState(() {
              class.data.minimum=int.parse(value);
               })
           },

Answer 1

默认情况下，您可以使用ValueKey文本，但在您的情况下使用globalKey