login_page.dart

import 'package:flutter/material.dart';
import 'package:praktikum_pertemuan_10/home_page.dart';

class LoginPage extends StatefulWidget {
  @override
  State<LoginPage> createState() => _LoginPageState();
}

class _LoginPageState extends State<LoginPage> {
  String _email = "temp";
  String _password = "temp";
  String _errorMessage = "Email atau Password Salah";

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("Login Page"),
      ),
      body: SingleChildScrollView(
        child: Column(children: [
          Center(
            child: Container(
              padding: EdgeInsets.only(top: 40),
              height: 190,
              width: 230,
              child: Image.asset('assets/img/powerrenjes.png'),
            ),
          ),
          Padding(
            padding: const EdgeInsets.all(8.0),
            child: TextField(
              decoration: InputDecoration(
                border: OutlineInputBorder(),
                labelText: 'Email',
                hintText: 'Masukkan Alamat Email',
              ),
              onChanged: (text) {
                _email = text;
              },
            ),
          ),
          Padding(
            padding: const EdgeInsets.all(8.0),
            child: TextField(
              obscureText: true,
              decoration: InputDecoration(
                border: OutlineInputBorder(),
                labelText: 'Password',
                hintText: 'Masukkan Passsword',
              ),
              onChanged: (text) {
                _password = text;
              },
            ),
          ),
          Padding(
            padding: const EdgeInsets.all(10),
            child: Text(
              _errorMessage,
              style: TextStyle(color: Colors.red),
            ),
          ),
          Container(
            height: 50,
            width: 250,
            decoration: BoxDecoration(
                color: Colors.blue, borderRadius: BorderRadius.circular(20)),
            child: TextButton(
              onPressed: () {
                setState(() {
                  if (_email == "anjay" && _password == "anjay") {
                    _errorMessage = "";
                    Navigator.pushReplacement(context,
                        MaterialPageRoute(builder: (context) => HomePage()));
                  } else {
                    _errorMessage =
                        "Email dan Password yang anda masukkan salah!!!";
                  }
                });
              },
              child: Text(
                "Login",
                style: TextStyle(color: Colors.white, fontSize: 20),
              ),
            ),
          )
        ]),
      ),
    );
  }
}