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

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

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");

调用Android常用的api 如下

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

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

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 = "";@Overrideprotected 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;}}

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>

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 framevoid 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

Unity3d 与 Android之间的互相调用

Unity3d 与 Android之间的互相调用

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