Flutter Scaffold Appbar not showing the back button

Question

My class is not showing the back button in the AppBar,

Already try put this.automaticallyImplyLeading = true,

import 'package:carros/pages/carro/carro.dart';
import 'package:flutter/material.dart';

class CarroPage extends StatelessWidget {
  Carro carro;
  CarroPage(this.carro);

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(carro.nome),
      ),
      body: _body(),
    );
  }

  _body() {
    return Image.network(carro.urlFoto);
  }
}

Answer 1

I used this solution, it works for me, add leading inside AppBar:

appBar: AppBar(
        backgroundColor: Colors.white,
        elevation: 0.0,
        titleSpacing: 10.0,
        centerTitle: true,
        leading: InkWell(
          onTap: () {
            Navigator.pop(context);
          },
          child: Icon(
            Icons.arrow_back_ios,
            color: Colors.black54,
          ),
        ),
      )

Answer 2

In order for the back key to come, the part that goes to that page is "Navigator.pushNamed (context, '/ brand new');" For example, it should be in the form of.

Answer 3

According to the document, if you use Material design and push a screen, the back button should be there.

https://api.flutter.dev/flutter/material/AppBar-class.html

But sometimes the back button and app bar background color are the same, so it is invisible. Let try to click on the leading button zone or set to a contrary color

appBar: AppBar(
  iconTheme: IconThemeData(
    color: Colors.black, //change your color here
  ),
  title: Text("Sample"),
  centerTitle: true,
), 

Answer 4

1. you should to be sure a create appbar : AppBar()
2. and should to set a color in the theme until maybe icon is white

Answer 5

The back buttons were all there by default. I built and deployed, the back buttons are there for some users, not for others. My goodness, this platform is getting buggier and buggier by the day. I shouldn't have to explicitly create a back button and wire in a manual pop function when the documentation clearly states it's part of the gig, and it works on some devices under some circumstances, with absolutely no consistency. (sigh)

Answer 6

To show back button only with custom color, and appbar background white or any color

appBar: AppBar(
            elevation: 0,
            backgroundColor: Colors.white,
            leading: IconButton(
              color: Colors.black,
              icon: Icon(Icons.arrow_back_ios),
              iconSize: 20.0,
              onPressed: () {
                Navigator.pop(context);
              },
            ),
            centerTitle: true,
          ),

Result

Answer 7

Try to make your own back button :

     appBar: AppBar(
                    leading: IconButton(
                    icon: Icon(Icons.arrow_back_ios),
                    iconSize: 20.0,
                    onPressed: () {
                      _goBack(context);
                    },
                  ),
                  centerTitle: true,
                  title: Text('carro.nome')),

And the _goBack method :

 _goBack(BuildContext context) {
Navigator.pop(context);

}