Unity3d 与 Android之间的互相调用

Unity3d 与 Android之间的互相调用

Unity3d 开发的过程中，总会遇到各种调用Android的情况，本文以Eclipse IDE开发

1. 引入classes.jar包，路径：打开文件位置->Data->PlaybackEngines->androidplayer->Variations->mono->release->classes->classes.jar。

2. 创建的MainActivity需要继承UnityPlayerActivity。cs脚本中调用Android代码

   AndroidJavaClass jc = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
   AndroidJavaObject jo = jc.GetStatic<AndroidJavaObject>("currentActivity");
   

3. 调用Android常用的api 如下

4. Android调用Unity3d代码

   UnityPlayer.UnitySendMessage("Main Camera", "OnMessage", "Hello u3d");  //Main Camera 是Scenes中的Objtct，OnMessage 是方法，最后传入参数
   

5. 创建Eclipse工程， Package Name的名字需要与Unity3d 中的Package Name 相同
   

6. 编写MainActivity类

   import android.app.Activity;
   import android.content.Context;
   import android.os.Bundle;
   import android.view.Menu;
   import android.view.MenuItem;
   
   import com.unity3d.player.UnityPlayer;
   import com.unity3d.player.UnityPlayerActivity;
   
   public class MainActivity extends UnityPlayerActivity {
          
   
   	Context mContext = null;
   	String strData = "";
   	
   	@Override
   	protected void onCreate(Bundle savedInstanceState) {
          
   		super.onCreate(savedInstanceState);
   		//setContentView(R.layout.activity_main);
   		mContext = this;
   		
   		UnityPlayer.UnitySendMessage("Main Camera", "OnMessage", "Hello u3d");	//调用Unity3d方法
   	}
   	
   	public void SetData(String str)
   	{
          
   		strData = str;
   	}
   	
   	public String GetData()
   	{
          
   		return strData;
   	}
   }
   

7. 导出jar包，只需要导出src目录即可
   

8. Unity3d 导入jar包，放置路径Assets->Plugins->Android->libs，导入AndroidManifest.xml文件到Assets->Plugins->Android，并修改AndroidManifest.xml文件，特别需要注意android:icon！！！

   <?xml version="1.0" encoding="utf-8"?>
   <manifest xmlns:android="http://schemas.android.com/apk/res/android"
       package="com.example.mygame"
       android:versionCode="1"
       android:versionName="1.0" >
   
       <uses-sdk
           android:minSdkVersion="16"
           android:targetSdkVersion="21" />
     
       <application
           android:allowBackup="true"
           android:icon="@drawable/app_icon"
           android:label="@string/app_name" >
           <activity
               android:name=".MainActivity"
               android:label="@string/app_name" >
               <intent-filter>
                   <action android:name="android.intent.action.MAIN" />
   
                   <category android:name="android.intent.category.LAUNCHER" />
               </intent-filter>
             
               <meta-data android:name="unityplayer.UnityActivity" android:value="true" />
           </activity>
       </application>
   
   </manifest>
   

9. Unity3d 编写cs代码，添加到Main Camera上

   using System.Collections;
   using System.Collections.Generic;
   using UnityEngine;
   
   public class Launch : MonoBehaviour {
          
   
       private AndroidJavaObject jo;
   
       // Use this for initialization
       void Start () {
          
           Debug.Log("Launch");
           if (Application.platform == RuntimePlatform.Android)
           {
          
               AndroidJavaClass jc = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
               if (jc != null)
                   jo = jc.GetStatic<AndroidJavaObject>("currentActivity");
           }
           SetData("abc");
           GetData();
       }
   	
   	// Update is called once per frame
   	void Update () {
          
   		
   	}
   
       public void OnMessage(string str)
       {
          
           Debug.Log("OnMessage " + str);
       }
   
       public void SetData(string str)
       {
          
           if (jo != null)
               jo.Call("SetData", str);
       }
   
       public void GetData()
       {
          
           if (jo != null)
           {
          
               string str = jo.Call<string>("GetData");
               Debug.Log("GetData " + str);
           }
       }
   }
   

Demo参考地址：https://download.csdn.net/download/wangningzk123/12581772