Unity3d 与 Android之间的互相调用

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最新推荐文章于 2025-03-25 22:10:36 发布

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分类专栏： Unity3d 文章标签： unity android eclipse java

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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 = "";
	
	@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;
	}
}

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 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);
        }
    }
}