AppBar not working and considered as dead code-CodePudding

This is my code, it keeps showing up as "Dead Code." and it wont show anything in my AVD, can anyone help me with this?

import 'package:flutter/material.dart';

class SignInScreen extends StatelessWidget {
  const SignInScreen({Key? key}) : super(key: key);
  static String routeName = "/sign_in";

  @override
  Widget build(BuildContext context) {
    return Scaffold();
    AppBar();
  }
}

CodePudding user response：

Firstly AppBar() should be inside the Scaffold widget.
The code should be something like this:

import 'package:flutter/material.dart';

class SignInScreen extends StatelessWidget {
  const SignInScreen({Key? key}) : super(key: key);
  static String routeName = "/sign_in";

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar();
    );
  }
}

Secondly when you use return the code below the return statement doesn't execute, that is the reason your ide shows as a "dead code"

CodePudding user response：

You are returning the Scaffold widget without adding AppBar inside Scaffold widget so it will never work. try this:

Widget build(BuildContext context) {
    return  Scaffold(
      appBar: AppBar(
        title: Text("Your Navigationbar title"),
      ),
      body: Container(),
    );
  }
}