[Android] 카카오톡 로그인 연동 / 카카오톡API사용 (ver.1.14.0) / 해시키구하기(Hashkey)

Android

[Android] 카카오톡 로그인 연동 / 카카오톡API사용 (ver.1.14.0) / 해시키구하기(Hashkey)

홍주인 2018. 11. 13. 12:22

일단 카카오톡 디벨로퍼를 가입해야해요!!

https://developers.kakao.com/

솔직히 말씀드리면, 카카오톡 디벨로퍼에 대부분 다 나와있긴한데, 안나와있는부분도 있고, 어느파일에 어느코드를 넣어야하는지 정확히 나와있지 않기때문에, 안드로이드를 많이 다뤄보지 않으신분들은 하기가 어렵습니다,,,ㅠㅠ

딱 안드로이드 카카오톡 로그인버튼 구현하는거까기 올려드릴게요!!!

그래서 저는 코드를 통째로 다 올려드리려구요!!

안드로이드 스튜디오에 왼쪽상단에서 찾아서 들어가실수 있고,

AndroidManifest.xml

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

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.cookandroid.패키지이름">
    <uses-permission android:name="android.permission.INTERNET" />
    <application
        android:name=".GlobalApplication"
        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=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <meta-data
            android:name="com.kakao.sdk.AppKey"
            android:value="@string/kakao_app_key" />
        <activity
            android:name="com.kakao.auth.authorization.authcode.KakaoWebViewActivity"
            android:launchMode="singleTop"
            android:windowSoftInputMode="adjustResize">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
    </application>
</manifest>

자바파일 하나를 더 만들어주셔야해요. 추가하시는법은

GlobalApplication.java

package com.cookandroid.패키지이름;

import android.app.Application;
import android.content.Context;

import com.kakao.auth.ApprovalType;
import com.kakao.auth.AuthType;
import com.kakao.auth.IApplicationConfig;
import com.kakao.auth.ISessionConfig;
import com.kakao.auth.KakaoAdapter;
public class GlobalApplication extends Application {
    private static GlobalApplication instance;
    public static final GlobalApplication getGlobalApplicationContext() {
        if (instance == null)
            throw new IllegalStateException("this application does not inherit com.kakao.GlobalApplication");
        return instance;
    }
    protected static class KakaoSDKAdapter extends KakaoAdapter {
        /**
         * Session Config에 대해서는 default값들이 존재한다.
         * 필요한 상황에서만 override해서 사용하면 됨.
         *
         * @return Session의 설정값.
         */
        @Override
        public ISessionConfig getSessionConfig() {
            return new ISessionConfig() {
                @Override
                public AuthType[] getAuthTypes() {
                    return new AuthType[]{AuthType.KAKAO_LOGIN_ALL};
                }
                @Override
                public boolean isUsingWebviewTimer() {
                    return false;
                }
                @Override
                public boolean isSecureMode() {
                    return false;
                }
                @Override
                public ApprovalType getApprovalType() {
                    return ApprovalType.INDIVIDUAL;
                }
                @Override
                public boolean isSaveFormData() {
                    return true;
                }
            };
        }
        @Override
        public IApplicationConfig getApplicationConfig() {
            return new IApplicationConfig() {
                @Override
                public Context getApplicationContext() {
                    return GlobalApplication.getGlobalApplicationContext();
                }
            };
        }
    }
    @Override
    public void onCreate() {
        super.onCreate();
        instance = this;
    }
}

MainActivity.java

package com.cookandroid.패키지이름;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;

import com.kakao.auth.ISessionCallback;
import com.kakao.auth.KakaoSDK;
import com.kakao.auth.Session;
import com.kakao.util.exception.KakaoException;
import com.kakao.util.helper.log.Logger;
public class MainActivity extends Activity {
    private SessionCallback callback;
    /**
     * 로그인 버튼을 클릭 했을시 access token을 요청하도록 설정한다.
     *
     * @param savedInstanceState 기존 session 정보가 저장된 객체
     */
    @Override
    protected void onCreate(final Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        KakaoSDK.init(new GlobalApplication.KakaoSDKAdapter());

        callback = new SessionCallback();
        Session.getCurrentSession().addCallback(callback);
        Session.getCurrentSession().checkAndImplicitOpen();
    }
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (Session.getCurrentSession().handleActivityResult(requestCode, resultCode, data)) {
            return;
        }
        super.onActivityResult(requestCode, resultCode, data);
    }
    @Override
    protected void onDestroy() {
        super.onDestroy();
        Session.getCurrentSession().removeCallback(callback);
    }
    private class SessionCallback implements ISessionCallback {
        @Override
        public void onSessionOpened() {
            redirectSignupActivity();
        }
        @Override
        public void onSessionOpenFailed(KakaoException exception) {
            if (exception != null) {
                Logger.e(exception);
            }
        }
    }
    protected void redirectSignupActivity() {
        final Intent intent = new Intent(this, MainActivity.class);
        startActivity(intent);
        finish();
    }
}

activity_main.xml

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

<FrameLayout 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">
    
    <com.kakao.usermgmt.LoginButton
        android:id="@+id/com_kakao_login"
        android:layout_width="300dp"
        android:layout_height="wrap_content"
        android:layout_marginBottom="30dp"
        android:layout_marginLeft="30dp"
        android:layout_marginRight="30dp"
        android:layout_marginTop="350dp"
        android:layout_weight="1" />

</FrameLayout>

res/values에 있는

strings.xml

<resources>
    <string name="app_name">패키지이름</string>
    <string name="kakao_app_key">자신의 카카오 네이티브앱키</string>

</resources>

Gradle Scripts에 있는

build.gradle(Project: 패키지이름)

// Top-level build file where you can add configuration options common to all sub-projects/modules.


buildscript {

    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.1.4'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        google()
        jcenter()
        //kakao
        mavenCentral()
        maven { url 'http://devrepo.kakao.com:8088/nexus/content/groups/public/' }
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

build.gradle(Module:app)

apply plugin: 'com.android.application'


android {
    compileSdkVersion 27
    defaultConfig {
        applicationId "com.cookandroid.hakseek2"
        minSdkVersion 16
        targetSdkVersion 27
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:27.1.1'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
    // 카카오 로그인 sdk를 사용하기 위해 필요.
    api group: 'com.kakao.sdk', name: 'usermgmt', version: '1.14.0'
}

딱 이렇게 하시면, 안드로이드 코드는 끝납니다. 수정해야할 부분은

1. 패키지이름 바꿔줘야 하구요!!

2. 네이티브앱키 등록해주셔야하구요!! ( 카카오톡디벨로퍼가입 -> 앱생성하시면 나옵니다)

3. 해시키 구하는 코드(아무 프로젝트나 만들어서 실행하면됌. 모든 프로젝트 동일) / Logcat에서 keyhash검색해서 찾으시면 됩니다

MainActivity.java

package com.cookandroid.exam;


import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.Signature;
import android.util.Base64;
import android.util.Log;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        getHashKey();
    }
    private void getHashKey(){
        PackageInfo packageInfo = null;
        try {
            packageInfo = getPackageManager().getPackageInfo(getPackageName(), PackageManager.GET_SIGNATURES);
        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
        }
        if (packageInfo == null)
            Log.e("KeyHash", "KeyHash:null");

        for (Signature signature : packageInfo.signatures) {
            try {
                MessageDigest md = MessageDigest.getInstance("SHA");
                md.update(signature.toByteArray());
                Log.d("KeyHash", Base64.encodeToString(md.digest(), Base64.DEFAULT));
            } catch (NoSuchAlgorithmException e) {
                Log.e("KeyHash", "Unable to get MessageDigest. signature=" + signature, e);
            }
        }
    }
}

안드로이드 스튜디오 아래쪽에 TODO / Logcat / Terminal / Build란에서 해시키를 보고서 카카오디벨로퍼 - 내계정 - 샘플앱 설정에 등록했습니다!!)

저는 학교 팀플을하는데, 제가 구현을 한다하고, 복붙만 하면 될줄알았는데.... 생각보다 오래걸렸네요..ㅠㅠㅠ