EX_로그인/회원가입/게시글 (jsonObject)

마이닷홈

www.dothome.co.kr/index.php

닷홈 - 호스팅은 닷홈

사용된 api

 

 

 

manifest

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

    <uses-permission android:name="android.permission.INTERNET"/>

    <application

 

{"result":"NK","msg":"비번오류","error_code":"1000"}

>> 중괄호로 뜨니까 jsonObject다. jsonArr는 대괄호로 시작

 

팝업 Toast 메세지하는데, 자주 쓰이니까 메소드로 빼놓기

 

TEXT WATCHER / 아이디 중복체크 안한 상태에서 가입해버리지 않도록

 

length<1 -=> 아이디가 1보다 작다 = 아이디가 비었다.

암호도 똑같이 처리해줌

 

자동로그인 ->savepref 메소드

 

requestCode사용법

 

 

전체코드

 

MainActivity

package com.real.boardexam;

import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;

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

public class MainActivity extends AppCompatActivity implements View.OnClickListener {
    EditText idEt;
    EditText pwEt;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        idEt = findViewById(R.id.id_et);
        pwEt = findViewById(R.id.pw_et);

        findViewById(R.id.join_btn).setOnClickListener(this);
        findViewById(R.id.login_btn).setOnClickListener(this);

    }

    private String getData(String key){
        String value = "";
        SharedPreferences sharedPreferences = getSharedPreferences("login",MODE_PRIVATE);
        value = sharedPreferences.getString(key,"no");
        return value;
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if(requestCode == 1000 ){ //회원 가입 창에서 복귀했다
            if(resultCode == RESULT_OK){ //회원 가입 성공
                String name = getData("name");
                String pass = getData("pass");
                //자동 로그인 시도
                
            }else{ //회원 가입 실패

            }
        }
    }

    @Override
    public void onClick(View view) {
        if(view.getId() == R.id.join_btn){
            startActivityForResult(new Intent(this, com.real.boardexam.JoinActivity.class), 1000);
        }
    }
}

 

JoinActivity

package com.real.boardexam;

import androidx.appcompat.app.AppCompatActivity;

import android.content.SharedPreferences;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.Log;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;

import com.android.volley.AuthFailureError;
import com.android.volley.DefaultRetryPolicy;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;

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

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

public class JoinActivity extends AppCompatActivity implements View.OnClickListener {
    boolean isJoinChk;

    EditText idEt;
    EditText pwEt1;
    EditText pwEt2;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_join);
        idEt = findViewById(R.id.id_et);
        pwEt1 = findViewById(R.id.pw_et1);
        pwEt2 = findViewById(R.id.pw_et2);

        isJoinChk = false; // 중복체크 안한 상태
        setResult(RESULT_CANCELED);  // 기본적인 값은 회원가입 실패

        findViewById(R.id.dup_btn).setOnClickListener(this);
        findViewById(R.id.join_btn).setOnClickListener(this);

        idEt.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {

            }

            @Override
            public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
                //idEt 안에 텍스트가 바뀌면 무조건 중복 체크 플래그 원상복귀
                isJoinChk = false;
            }

            @Override
            public void afterTextChanged(Editable editable) {

            }
        });
    }

    //name이 중복되었는 지 확인하는 요청
    private void chkID() {
        RequestQueue stringRequest = Volley.newRequestQueue(this);
        String url = "http://heutwo.dothome.co.kr/temp/test_chk.php";

        StringRequest myReq = new StringRequest(Request.Method.POST, url,
                successListener, errorListener) {
            @Override
            protected Map<String, String> getParams() throws AuthFailureError {
                Map<String, String> params = new HashMap<String, String>();
                params.put("name", idEt.getText().toString().trim());
                return params;
            }
        };
        myReq.setRetryPolicy(new DefaultRetryPolicy(3000, 0, 1f)

        );
        stringRequest.add(myReq);
    }

    private void savePref(String key, String value){
        SharedPreferences sharedPreferences = getSharedPreferences("login", MODE_PRIVATE);
        SharedPreferences.Editor editor = sharedPreferences.edit();
        editor.putString(key, value);
        editor.commit();
    }

    private void showToast(String msg) {
        Toast.makeText(this, msg, Toast.LENGTH_SHORT).show();
    }

    Response.Listener<String> successListener = new Response.Listener<String>() {
        @Override
        public void onResponse(String response) {
            try {
                JSONObject jsonObject = new JSONObject(response);
                String str = jsonObject.getString("result");
                if (str.equalsIgnoreCase("OK")) { // 사용가능한 아이디
                    isJoinChk = true;
                    showToast("사용 가능한 아이디");
                } else { //사용 불가능한 아이디
                    isJoinChk = false;
                    showToast("사용 불가능한 아이디");
                }
            } catch (JSONException e) {
                e.printStackTrace();
            }

        }
    };

    Response.ErrorListener errorListener = new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {
//            error.getLocalizedMessage();
//            error.getMessage();
//            error.getStackTrace();

        }
    };

    private void requestForJoin() {
        RequestQueue stringRequest = Volley.newRequestQueue(this);
        String url = "http://heutwo.dothome.co.kr/temp/test_join.php";

        StringRequest myReq = new StringRequest(Request.Method.POST, url,
                successJoinListener, errorListener) {
            @Override
            protected Map<String, String> getParams() throws AuthFailureError {
                Map<String, String> params = new HashMap<String, String>();
                params.put("name", idEt.getText().toString().trim());
                params.put("pass", pwEt1.getText().toString().trim());
                return params;
            }
        };
        myReq.setRetryPolicy(new DefaultRetryPolicy(3000, 0, 1f)

        );
        stringRequest.add(myReq);
    }

    Response.Listener<String> successJoinListener = new Response.Listener<String>() {
        @Override
        public void onResponse(String response) {
            try {
                JSONObject jsonObject = new JSONObject(response);
                String str = jsonObject.getString("result");
                if (str.equalsIgnoreCase("OK")) { //회원 가입 성공!
                    showToast("회원 가입 성공!");
                    savePref("name", idEt.getText().toString().trim());  //자동 로그인을 위해 아이디 저장
                    savePref("pass", pwEt1.getText().toString().trim()); //자동 로그인을 위해 암호 저장
                    setResult(RESULT_OK); // 회원 가입 성공 표시
                    finish(); // 액티비티 종료
                } else {
                    showToast("회원 실패!");
                }
            } catch (JSONException e) {
                e.printStackTrace();
            }

        }
    };

    @Override
    public void onClick(View view) {
        if (view.getId() == R.id.join_btn) {
            if (isJoinChk) {  // 아이디 중복체크 했니?
                String pw1 = pwEt1.getText().toString().trim();
                String pw2 = pwEt2.getText().toString().trim();
                if (idEt.getText().toString().trim().length() < 1) { //아이디 입력칸이 비었니?
                    showToast("아이디를 입력하세요");
                } else if (pwEt1.getText().toString().trim().length() < 1) { //암호 입력칸이 비었니?
                    showToast("암호를 입력하세요");
                } else if(!pw1.equals(pw2)){ // 암호 입력칸 2개가 일치하니?
                    showToast("암호가 일치하지 않습니다");
                }else{
                    requestForJoin(); // 회원가입 시도
                }
            } else {
                showToast("중복체크 하셈");
            }
        } else if (view.getId() == R.id.dup_btn) {
            chkID();
        }
    }
}

 

activity_main.xml

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


    <EditText
        android:id="@+id/id_et"
        android:layout_width="200dp"
        android:layout_height="70dp"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="200dp"
        android:hint="이름"
        android:padding="8dp"
        android:textSize="20sp" />

    <EditText
        android:id="@+id/pw_et"
        android:layout_width="200dp"
        android:layout_height="70dp"
        android:layout_below="@+id/id_et"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="5dp"
        android:hint="암호"
        android:inputType="textPassword"
        android:padding="8dp"
        android:textSize="20sp" />

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/pw_et"
        android:layout_alignLeft="@+id/pw_et"
        android:layout_alignRight="@+id/pw_et"
        android:orientation="horizontal">

        <Button
            android:id="@+id/join_btn"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="가입"
            android:textSize="20sp" />

        <Button
            android:id="@+id/login_btn"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="로그인"
            android:textSize="20sp" />

    </LinearLayout>

</RelativeLayout>

 

activity_join.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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=".JoinActivity">

    <EditText
        android:id="@+id/id_et"
        android:layout_width="200dp"
        android:layout_height="70dp"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="200dp"
        android:hint="이름"
        android:inputType="text"
        android:maxLines="1"
        android:maxLength="12"
        android:padding="8dp"
        android:textSize="20sp" />

    <EditText
        android:id="@+id/pw_et1"
        android:layout_width="200dp"
        android:layout_height="70dp"
        android:layout_below="@+id/id_et"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="5dp"
        android:hint="암호"
        android:inputType="textPassword"
        android:maxLines="1"
        android:maxLength="12"
        android:padding="8dp"
        android:textSize="20sp" />

    <EditText
        android:id="@+id/pw_et2"
        android:layout_width="200dp"
        android:layout_height="70dp"
        android:layout_below="@+id/pw_et1"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="5dp"
        android:hint="암호"
        android:inputType="textPassword"
        android:maxLines="1"
        android:maxLength="12"
        android:padding="8dp"
        android:textSize="20sp" />

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/pw_et2"
        android:layout_alignLeft="@+id/pw_et2"
        android:layout_alignRight="@+id/pw_et2"
        android:orientation="horizontal">

        <Button
            android:id="@+id/dup_btn"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="중복확인"
            android:textSize="20sp" />

        <Button
            android:id="@+id/join_btn"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="가입"
            android:textSize="20sp" />

    </LinearLayout>

</RelativeLayout>