import 'dart:async'; import 'package:flutter/material.dart'; abstract class CustState extends State { bool isInited = false; bool readyComplete = false; @override Widget build(BuildContext context) { Widget w = doBuild(context); if (!isInited) { isInited = true; WidgetsBinding.instance.addPostFrameCallback((_) { this.onReady(context); readyComplete = true; }); } return w; } Widget doBuild(BuildContext context); Future onReady(BuildContext context); // @override // void dispose() { // super.dispose(); // } // @override // void initState() { // super.initState(); // } }