form

[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', 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 { var formKey = GlobalKey(); var tfKullaniciAdi = TextEditingController(); var tfSifre = TextEditingController();

@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: [ Padding( padding: const EdgeInsets.all(8.0), child: Form( key: formKey, child: Column( children: [ TextFormField( controller: tfKullaniciAdi, decoration: InputDecoration(hintText: "kullanıcı Adı"), validator: (tfgirdisi) { if (tfgirdisi!.isEmpty) { return "Kullanıcı Adı Giriniz"; } return null; }, ), TextFormField( controller: tfSifre, obscureText: true, decoration: InputDecoration(hintText: "Şifre"), validator: (tfgirdisi) { if (tfgirdisi!.isEmpty) { return "Şifre Giriniz"; } if (tfgirdisi.length < 6) { return "6 karakterden uzun girin"; } return null; }, ), ElevatedButton( onPressed: () { bool kontrolSonucu = formKey.currentState!.validate(); if (kontrolSonucu) { String ka = tfKullaniciAdi.text; String si = tfSifre.text; print("Kullanıcı Adı : $ka - Şifre : $si"); } }, child: Text("GİRİŞ")) ], ), ), ), ], ), ), ); } }