How to change text color of AppBar, icon color of FAB universally using theme?

Question

I am able to set the background color of AppBar to Colors.amber. This automatically sets the text color to Black. I am aware of the accessibility i

Answer 1

Firstly I wanna let u know that there are 3 ways to set colors in flutter.

So u asked u wanna set color or text in app bar. So it works if u set color in style property of Text method. Let me show you how it works. And also I will show you 3 ways of setting color. It doesn't matter if u use theme property or not because setting color of Text works as diffrent. Thats way I didn't use Theme property in examples.

1th:

Scaffold(
  appBar: AppBar(
    title: Text("App Name",
    style: TextStyle(color: Colors.colorname),);

2th :

Scaffold(
  appBar: AppBar(
    title: Text("App Name",
    style: TextStyle(color: Color(0xffffff),));

3th :

Scaffold(
  appBar: AppBar(
    backgroundColor: Colors.white,
    title: Text("App Name",
    style: TextStyle(color: Color.fromRGBO(0, 0, 0, 0, 0),));