Force Flutter navigator to reload state when popping

Question

I have one StatefulWidget in Flutter with button, which navigates me to another StatefulWidget using Navigator.push(). On second widge

Answer 1

Today I faced the same situation but I managed to solve it in much easier way, I just defined a global variable which was used in the first stateful class , and when I navigate to a second stateful widget I let it update the value of the global variable which automatically forces the first widget to update. Here is an example (I wrote it in hurry so I didn't put a scaffold or a material app, I just wanted to Illustrate my point):

import 'package:flutter/material.dart';
int count = 0 ;

class FirstPage extends StatefulWidget {
FirstPage({Key key}) : super(key: key);

@override
_FirstPageState createState() => _FirstPageState();
}

class _FirstPageState extends State {
@override
Widget build(BuildContext context) {
return InkWell(
onTap(){
Navigator.of(context).push(MaterialPageRoute(builder: (context) =>
                  new SecondPage());
},
child: Text('First', style : TextStyle(fontSize: count == 0 ? 20.0 : 12.0)),
),

}


class SecondPage extends StatefulWidget {
SecondPage({Key key}) : super(key: key);

@override
_SecondPageState createState() => _SecondPageState();
}

class _SecondPageState extends State {
@override
Widget build(BuildContext context) {
return IconButton(
         icon: new Icon(Icons.add),
         color: Colors.amber,
         iconSize: 15.0,
         onPressed: (){
         count++ ;
         },
       ),
     }