unity与android交互

今天药忘吃喽~ 2022-08-10 14:43 229阅读 0赞

网上大多数都是把android的工程放到unity里来打包成.apk。但是我感觉那样不好，因为我延用了ios的思想，unity和ios交互是使用unity导出xcode工程进行二次开发，其实unity也可以导出eclipse进行二次开发，我用的版本是unity4.3,我记得之前我用4.0导出eclipse工程会生成三个.java脚本，现在只生成一个，UnityPlayerNativeActivity，不过这个类往上继承两层也是UnityPlayerActivity,都一样一样的，只能说4.3更简化了unity和android的交互，

我做了个测试完全无压力交互。

unity测试代码，

using UnityEngine;
    using System.Collections;
    
    public class Test : MonoBehaviour {
    	bool isSend = false;
    	// Use this for initialization
    	void Start () {
    	
    	}
    	
    	// Update is called once per frame
    	void Update () {
    	
    	}
    	void OnGUI()
    	{
    		if(GUI.Button(new Rect(0,0,200,200),"one"))
    		{
    			using(AndroidJavaClass jc = new AndroidJavaClass("com.unity3d.player.UnityPlayer"))
    			{
    				using(AndroidJavaObject jo = jc.GetStatic<AndroidJavaObject>("currentActivity"))
    				{
    					AndroidJavaClass cls = new AndroidJavaClass("com.dilitechcompany.demotest.UnityPlayerNativeActivity");   
    					
    					//cls.CallStatic("_hideView", "one");   
    					jo.Call("_hideView","two");
    				}
    			}
    		
    		
    		}
    		if(GUI.Button(new Rect(0,200,200,200),"two"))
    		{
    			using(AndroidJavaClass jc = new AndroidJavaClass("com.unity3d.player.UnityPlayer"))
    			{
    				using(AndroidJavaObject jo = jc.GetStatic<AndroidJavaObject>("currentActivity"))
    				{
    					AndroidJavaClass cls = new AndroidJavaClass("com.dilitechcompany.demotest.UnityPlayerNativeActivity");   
    					
    					//cls.CallStatic("_Display", "one");   
    					jo.Call("_Display","two");
    				}
    			}
    			
    			
    		}
    		if(isSend)
    		{
    			GUI.Button(new Rect(200,0,200,200),"testbtn");
    		}
    	}
    	void AndroidSendMessage(string name)
    	{
    		isSend = !isSend;
    	}
    }

注解：unity为我们提供了调用android特定的类，AndroidJavaClass、AndroidJavaObject，这个不懂的可以查文档，网上解释一大堆，不过 com.unity3d.player.UnityPlayer这个我解释一下，这个写法是一种固定写法，会android一般可以理解，就是去根据这个包路径去找到这个UnityPlayer,currentActivity这个有歧义不是当前activity而是主activity,这个不知道的可以去AndroidManifest.xml去看主activity,

这是一种固定写法，参数是写死的

另外可以使用AndroidJavaClass cls\_CompassActivity = new AndroidJavaClass("com.dilitechcompany.demotest.UnityPlayerNativeActivity");

就是你导出的android工程包名+主activity，其实道理一样的也可以调用成功，

这样交互的代码只能写在主activity里了。

package com.dilitechcompany.demotest;
    
    import com.unity3d.player.UnityPlayer;
    import android.app.NativeActivity;
    import android.content.res.Configuration;
    import android.graphics.PixelFormat;
    import android.os.Bundle;
    import android.util.Log;
    import android.view.KeyEvent;
    import android.view.View;
    import android.view.Window;
    import android.view.WindowManager;
    
    public class UnityPlayerNativeActivity extends NativeActivity
    {
    	protected UnityPlayer mUnityPlayer;		// don't change the name of this variable; referenced from native code
    
    	// UnityPlayer.init() should be called before attaching the view to a layout - it will load the native code.
    	// UnityPlayer.quit() should be the last thing called - it will unload the native code.
    	protected void onCreate (Bundle savedInstanceState)
    	{
    		requestWindowFeature(Window.FEATURE_NO_TITLE);
    		super.onCreate(savedInstanceState);
    		
    		getWindow().takeSurface(null);
    		setTheme(android.R.style.Theme_NoTitleBar_Fullscreen);
    		getWindow().setFormat(PixelFormat.RGB_565);
    
    		mUnityPlayer = new UnityPlayer(this);
    		if (mUnityPlayer.getSettings ().getBoolean ("hide_status_bar", true))
    			getWindow ().setFlags (WindowManager.LayoutParams.FLAG_FULLSCREEN,
    			                       WindowManager.LayoutParams.FLAG_FULLSCREEN);
    
    		int glesMode = mUnityPlayer.getSettings().getInt("gles_mode", 1);
    		boolean trueColor8888 = false;
    		mUnityPlayer.init(glesMode, trueColor8888);
    
    		View playerView = mUnityPlayer.getView();
    		setContentView(playerView);
    		playerView.requestFocus();		
    //		View rootView=mUnityPlayer.getView();
    //		
    //		Toast.makeText(this, "class:"+rootView.getClass().getName(), Toast.LENGTH_LONG).show();
    //		
    	}
    	
    	public  void _hideView(String name) {
    		UnityPlayer.UnitySendMessage("Main Camera", "AndroidSendMessage", "");
    		Log.v("unity3d", "hide view");
    	}
    	public  void _Display(String name) {
    		UnityPlayer.UnitySendMessage("Main Camera", "AndroidSendMessage", "");
    		Log.v("unity3d", "display");
    	}
    	protected void onDestroy ()
    	{
    		mUnityPlayer.quit();
    		super.onDestroy();
    	}
    
    	// onPause()/onResume() must be sent to UnityPlayer to enable pause and resource recreation on resume.
    	protected void onPause()
    	{
    		super.onPause();
    		mUnityPlayer.pause();
    	}
    	protected void onResume()
    	{
    		super.onResume();
    		mUnityPlayer.resume();
    	}
    	public void onConfigurationChanged(Configuration newConfig)
    	{
    		super.onConfigurationChanged(newConfig);
    		mUnityPlayer.configurationChanged(newConfig);
    	}
    	public void onWindowFocusChanged(boolean hasFocus)
    	{
    		super.onWindowFocusChanged(hasFocus);
    		mUnityPlayer.windowFocusChanged(hasFocus);
    	}
    	public boolean dispatchKeyEvent(KeyEvent event)
    	{
    		if (event.getAction() == KeyEvent.ACTION_MULTIPLE)
    			return mUnityPlayer.onKeyMultiple(event.getKeyCode(), event.getRepeatCount(), event);
    		return super.dispatchKeyEvent(event);
    	}
    	
    }

最后java代码附上，这也是个3dview视图，操作方便，二次开发使用，大家可以看log信息，也可以反调unity看交互验证结果。