Login & Register

volley - 서버 통신 관련해서 필요한 라이브러리(전송, 다운로드 관련 라이브러리)

 

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AndrioidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.registerlogin">

    <uses-permission android:name="android.permission.INTERNET"/> <!-- 인터넷 권한 설정-->

    <application
        android:usesCleartextTraffic="true"
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".LoginActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".RegisterActivity" />
        <activity android:name=".MainActivity">

        </activity>
    </application>

</manifest>

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activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <TextView
        android:id="@+id/textView5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="100dp"
        android:text="Hello World!"
        android:textSize="30sp"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="8dp"
        android:text="아이디"
        android:textSize="24sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView5" />

    <TextView
        android:id="@+id/tv_id"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="8dp"
        android:text="TextView"
        android:textSize="30sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView" />

    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="8dp"
        android:text="비밀번호"
        android:textSize="24sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.498"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/tv_id" />

    <TextView
        android:id="@+id/tv_pass"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="8dp"
        android:text="TextView"
        android:textSize="30sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.498"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView3" />

</androidx.constraintlayout.widget.ConstraintLayout>

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xml 파일 추가

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<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".RegisterActivity">

    <EditText
        android:id="@+id/et_id"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginTop="200dp"
        android:layout_marginEnd="8dp"
        android:ems="10"
        android:hint="아이디"
        android:inputType="textPersonName"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <EditText
        android:id="@+id/et_pass"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        android:ems="10"
        android:hint="비밀번호"
        android:inputType="textPersonName"
        app:layout_constraintEnd_toEndOf="@+id/et_id"
        app:layout_constraintStart_toStartOf="@+id/et_id"
        app:layout_constraintTop_toBottomOf="@+id/et_id" />

    <EditText
        android:id="@+id/et_name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        android:ems="10"
        android:hint="이름"
        android:inputType="textPersonName"
        app:layout_constraintEnd_toEndOf="@+id/et_pass"
        app:layout_constraintStart_toStartOf="@+id/et_pass"
        app:layout_constraintTop_toBottomOf="@+id/et_pass" />

    <EditText
        android:id="@+id/et_age"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        android:ems="10"
        android:hint="나이"
        android:inputType="textPersonName"
        app:layout_constraintEnd_toEndOf="@+id/et_name"
        app:layout_constraintStart_toStartOf="@+id/et_name"
        app:layout_constraintTop_toBottomOf="@+id/et_name" />

    <Button
        android:id="@+id/btn_register"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        android:text="회원가입"
        app:layout_constraintEnd_toEndOf="@+id/et_age"
        app:layout_constraintStart_toStartOf="@+id/et_age"
        app:layout_constraintTop_toBottomOf="@+id/et_age" />
</androidx.constraintlayout.widget.ConstraintLayout>

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xml 파일 추가

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activity_login.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".LoginActivity">

    <EditText
        android:id="@+id/et_id"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginTop="200dp"
        android:layout_marginEnd="8dp"
        android:ems="10"
        android:hint="아이디"
        android:inputType="textPersonName"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <EditText
        android:id="@+id/et_pass"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginTop="32dp"
        android:layout_marginEnd="8dp"
        android:ems="10"
        android:hint="비밀번호"
        android:inputType="textPersonName"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/et_id" />

    <Button
        android:id="@+id/btn_login"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="32dp"
        android:text="로그인"
        app:layout_constraintEnd_toEndOf="@+id/et_pass"
        app:layout_constraintStart_toStartOf="@+id/et_pass"
        app:layout_constraintTop_toBottomOf="@+id/et_pass" />

    <Button
        android:id="@+id/btn_register"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="32dp"
        android:text="회원가입"
        app:layout_constraintEnd_toEndOf="@+id/btn_login"
        app:layout_constraintStart_toStartOf="@+id/btn_login"
        app:layout_constraintTop_toBottomOf="@+id/btn_login" />
</androidx.constraintlayout.widget.ConstraintLayout>

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java 파일은

LoginActivity

LoginRequest

MainActivity

RegisterActivity

RegisterRequest 순서로 있어야 함

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LoginActivity.java

package com.example.registerlogin;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.toolbox.Volley;

import org.json.JSONException;
import org.json.JSONObject;

public class LoginActivity extends AppCompatActivity {
    private EditText et_id, et_pass;
    private Button btn_login, btn_register;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);

        et_id = findViewById(R.id.et_id);
        et_pass = findViewById(R.id.et_pass);

        btn_login = findViewById(R.id.btn_login);
        btn_register = findViewById(R.id.btn_register);

        // 회원가입 버튼 클릭 시 수행
        btn_register.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent intent = new Intent(LoginActivity.this, RegisterActivity.class);
                startActivity(intent);
            }
        });

        btn_login.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                // EditText에 현재 입력 되어있는 값을 가져온다
                String userID = et_id.getText().toString();
                String userPass = et_pass.getText().toString();

                Response.Listener<String> responseLintener = new Response.Listener<String>() {
                    @Override
                    public void onResponse(String response) {
                        try {
                            JSONObject jsonObject = new JSONObject(response);
                            boolean success = jsonObject.getBoolean("success");
                            if (success) { // 로그인에 성공한 경우
                                String userID = jsonObject.getString("userID");
                                String userPass = jsonObject.getString("userPassword");

                                Toast.makeText(getApplicationContext(), "로그인에 성공하였습니다", Toast.LENGTH_SHORT).show();
                                Intent intent = new Intent(LoginActivity.this, MainActivity.class);
                                intent.putExtra("userID", userID);
                                intent.putExtra("userPass", userPass);
                                startActivity(intent);
                            } else { // 로그인에 성공한 경우
                                Toast.makeText(getApplicationContext(), "로그인에 실패하였습니다", Toast.LENGTH_SHORT).show();
                                return;
                            }
                        } catch (JSONException e) {
                            e.printStackTrace();
                        }
                    }
                };
                LoginRequest loginRequest = new LoginRequest(userID, userPass, responseLintener);
                RequestQueue queue = Volley.newRequestQueue(LoginActivity.this);
                queue.add(loginRequest);
            }
        });

    }
}

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LoginRequest

package com.example.registerlogin;

import com.android.volley.AuthFailureError;
import com.android.volley.Response;
import com.android.volley.toolbox.StringRequest;

import java.util.HashMap;
import java.util.Map;

public class LoginRequest extends StringRequest {

    // 서버 URL 설정(php 파일 연동)
    final static private String URL = "http://khon01.dothome.co.kr/Login.php";
    private Map<String, String> map;

    public LoginRequest(String userID, String userPassword, Response.Listener<String> listener) {
        super(Method.POST, URL, listener, null);

        map = new HashMap<>();
        map.put("userID", userID);
        map.put("userPassword", userPassword);
    }

    @Override
    protected Map<String, String> getParams() throws AuthFailureError {
        return map;
    }
}

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MainActivity.java

package com.example.registerlogin;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    private TextView tv_id, tv_pass;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        tv_id = findViewById(R.id.tv_id);
        tv_pass = findViewById(R.id.tv_pass);

        Intent intent = getIntent();
        String userID = intent.getStringExtra("userID");
        String userPass = intent.getStringExtra("userPass");

        tv_id.setText(userID);
        tv_pass.setText(userPass);
    }
}

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RegisterActivity.java

package com.example.registerlogin;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.toolbox.Volley;

import org.json.JSONException;
import org.json.JSONObject;

public class RegisterActivity extends AppCompatActivity {

    private EditText et_id, et_pass, et_name, et_age;
    private Button btn_register;

    @Override
    protected void onCreate(Bundle savedInstanceState) { // 액티비티 시작시 처음으로 실행되는 생명주기
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_register);

        // 아이디 값 찾아주기
        et_id = findViewById(R.id.et_id);
        et_pass = findViewById(R.id.et_pass);
        et_name = findViewById(R.id.et_name);
        et_age = findViewById(R.id.et_age);

        // 회원가입 버튼 클릭 시 수행
        btn_register = findViewById(R.id.btn_register);
        btn_register.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                // EditText에 현재 입력 되어있는 값을 가져온다
                String userID = et_id.getText().toString();
                String userPass = et_pass.getText().toString();
                String userName = et_name.getText().toString();
                int userAge = Integer.parseInt(et_age.getText().toString());

                Response.Listener<String> responseListener = new Response.Listener<String>() {
                    @Override
                    public void onResponse(String response) {
                        try {
                            JSONObject jsonObject = new JSONObject(response);
                            boolean success = jsonObject.getBoolean("success");
                            if (success) { // 회원등록에 성공한 경우
                                Toast.makeText(getApplicationContext(), "회원 등록에 성공하였습니다", Toast.LENGTH_SHORT).show();
                                Intent intent = new Intent(RegisterActivity.this, LoginActivity.class);
                                startActivity(intent);
                            } else { // 회원등록에 성공한 경우
                                Toast.makeText(getApplicationContext(), "회원 등록에 싪패하였습니다", Toast.LENGTH_SHORT).show();
                                return;
                            }
                        } catch (JSONException e) {
                            e.printStackTrace();
                        }
                    }
                };

                // 서버로 Volley를 이용해서 요청을 함
                RegisterRequest registerRequest = new RegisterRequest(userID, userName ,userPass, userAge, responseListener);
                RequestQueue queue = Volley.newRequestQueue(RegisterActivity.this);
                queue.add(registerRequest);

            }
        });
    }
}

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RegisterRequest.java

package com.example.registerlogin;

import com.android.volley.AuthFailureError;
import com.android.volley.Response;
import com.android.volley.toolbox.StringRequest;

import java.util.HashMap;
import java.util.Map;

public class RegisterRequest extends StringRequest {

    // 서버 URL 설정(php 파일 연동)
    final static private String URL = "http://khon01.dothome.co.kr/Register.php";
    private Map<String, String> map;

    public RegisterRequest(String userID, String userPassword, String userName, int userAge, Response.Listener<String> listener) {
        super(Method.POST, URL, listener, null);

        map = new HashMap<>();
        map.put("userID", userID);
        map.put("userPassword", userPassword);
        map.put("userName", userName);
        map.put("userAge", userAge + "");
    }

    @Override
    protected Map<String, String> getParams() throws AuthFailureError {
        return map;
    }
}