import 'package:flutter/material.dart';

void main() {
  runApp(
      new App()
  );
}

class App extends StatefulWidget {
  @override
  _AppState createState() {
    return _AppState();
  }
}

class _AppState extends State<App> {
  var arr1 = [true,true,false];

  List<Widget> buildButtons() {
    List<Widget> res = [];
    for(int z=0;z<arr1.length;++z) {
      res.add(RaisedButton(
        child: Text(arr1[z].toString()),
        onPressed: (){
          setState((){
            arr1[z]=!arr1[z];
          });
        },
      ));
    }
    return res;
  }
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        body: Row(
          mainAxisAlignment: MainAxisAlignment.center,
          children: buildButtons(),
        )
      )
    );
  }
}