유니티와 안드로이드 연동

1. 유니티 스크립트 작성

using UnityEngine;

using System.Collections;

using UnityEngine.UI;

public class test : MonoBehaviour {

    public Text screentext;

    private static AndroidJavaObject _plugins;

// Use this for initialization

void Start () {

        AndroidJNI.AttachCurrentThread();

        AndroidJavaClass Ajc = new AndroidJavaClass("com.unity3d.player.UnityPlayer");

        _plugins = Ajc.GetStatic<AndroidJavaObject>("currentActivity");

        screentext.text += _plugins.ToString();

}

// Update is called once per frame

void Update () {

        if (Input.GetKey(KeyCode.Escape))

        {

            Application.Quit();

        }

}

    public void keyreceive(string keyevent)

    {

        screentext.text += "\n" + keyevent;

    }

    public void sendToast()

    {

        _plugins.Call("ToastMessage");

    }

}

스마트폰 버튼 조작 (볼륨, 메뉴 등) : 안드로이드에서 유니티로 메세지 전송하여 keyreceive 함수 호출 -> 화면에 버튼 텍스트 값 출력

유니티에 띄어진 메뉴 조작 -> sendToast 함수 호출 -> 안드로이드로 ToastMessage call -> Toast 출력

2. PlayerSetting 에서 패키지명을 수정

3. 안드로이드 스튜디오 프로젝트 작성 (위에서 설정한 것과 같게.)

4. 유니티\Editor\Data\PlaybackEngines\AndroidPlayer\Variations\il2cpp\Release\Classes\classes.jar 추가

open Module Setting -> Modules -> Dependencies

5. Build Gradle 을 다음과 같이 수정

apply plugin: 'com.android.library'

android {

    compileSdkVersion 23

    buildToolsVersion "23.0.2"

    defaultConfig {

        minSdkVersion 19

        targetSdkVersion 23

    }

    buildTypes {

        release {

            minifyEnabled false

            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'

        }

    }

}

dependencies {

    compile fileTree(include: ['*.jar'], dir: 'libs')

    testCompile 'junit:junit:4.12'

    compile 'com.android.support:appcompat-v7:23.4.0'

    compile 'com.android.support:design:23.4.0'

    compile files('libs/classes.jar')

}

// task to delete the old jar

task deleteOldJar (type: Delete){

    delete 'release/AndroidPlugin.jar'

}

// task to export contents as jar

task exportJar (type: Copy){

    from('build/intermediates/bundles/release/')

    into('release/')

    include('classes.jar')

    // Rename the jar

    rename('classes.jar', 'AndroidPlugin.jar')

}

exportJar.dependsOn(deleteOldJar, build)

6. 안드로이드 코드 작성

package com.example.yhc50.withunitytest;

import android.os.Bundle;

import android.os.Message;

import android.os.Handler;

import android.view.KeyEvent;

import android.widget.Toast;

import com.unity3d.player.UnityPlayer;

import com.unity3d.player.UnityPlayerActivity;

public class MainActivity extends UnityPlayerActivity {

    @Override

    public void onCreate(Bundle savedInstancesState){

        super.onCreate(savedInstancesState);

    }

    private Handler handler = new Handler() {

        public void handleMessage(Message msg) {

            switch (msg.what) {

                case 0:

                    Toast.makeText(getApplicationContext(), "test", Toast.LENGTH_SHORT).show();

                    break;

            }

        }

    };

    @Override

    public boolean dispatchKeyEvent(KeyEvent event){

        String keyCodeInt = String.valueOf(event.getKeyCode());

        UnityPlayer.UnitySendMessage("Main Camera", "keyreceive", keyCodeInt);

        return super.dispatchKeyEvent(event);

    }

    public void ToastMessage() {

        handler.sendEmptyMessage(0);

    }

}

7. Gradle -> ExportJar 로 출력

8. app\src\main\AndroidManifest.xml 내용 수정

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

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.example.yhc50.withunitytest">

    <application

        android:allowBackup="true"

        android:icon="@mipmap/ic_launcher"

        android:label="@string/app_name"

        android:supportsRtl="true"

        android:theme="@style/AppTheme">

        <activity

            android:name=".MainActivity"

            android:label="@string/app_name"

            android:theme="@style/AppTheme.NoActionBar">

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

    </application>

</manifest>

9. xml 과 Jar 을 유니티 프로젝트\Plugins\Android 로 복사

10. 유니티 빌드 후 실행. 끝