FutureBuilder

[berkeresvan]

import 'package:flutter/material.dart';

void main() { runApp(const MyApp()); }

class MyApp extends StatelessWidget { const MyApp({super.key});

@override Widget build(BuildContext context) { return MaterialApp( title: 'Flutter Demo', debugShowCheckedModeBanner: false, theme: ThemeData( colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple), useMaterial3: true, ), home: const MyHomePage(title: 'Flutter Demo Home Page'), ); } }

class MyHomePage extends StatefulWidget { const MyHomePage({super.key, required this.title});

final String title;

@override State createState() => _MyHomePageState(); }

class _MyHomePageState extends State { Future faktoriyelHesapla(int sayi) async { int sonuc = 1;

for (var i = 1; i <= sayi; i++) {
  sonuc = sonuc * i;
}
return sonuc;

}

@override Widget build(BuildContext context) { return Scaffold( appBar: AppBar( backgroundColor: Theme.of(context).colorScheme.inversePrimary, title: Text(widget.title), ), body: Center( child: Column( mainAxisAlignment: MainAxisAlignment.center, children: [ FutureBuilder( future: faktoriyelHesapla(5), builder: (context, AsyncSnapshot) { if (AsyncSnapshot.hasError) { print("hata sonucu : ${AsyncSnapshot.error}"); } if (AsyncSnapshot.hasData) { return Text("sonuc : ${AsyncSnapshot.data}"); } else { return Text("Gösterilecek Veri Yok"); } }, ), ], ), ), ); } }