我的 flutter 应用程序中有太多黄线

Question

I have flutter app and I have to make clean code with 0 errors.

When I remove const from constructor in stateless widget it throw me yellow line error like bellow:

This class (or a class that this class inherits from) is marked as '@immutable', but one or more of its instance fields aren't final: PerytonDropDown.selected

I don't know how to deal with it. Can anyone help me to resolve this issue?

Answer 1

it is very simple, just initialize your variable with final .

Like Below:

final String text;