unity与android交互

转自：http://blog.csdn.net/itolfn/article/details/38293627?utm_source=tuicool&utm_medium=referral

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，

[csharp] view plain copy

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>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>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>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。

[java] view plain copy

package com.dilitechcompany.demotest;
import com.unity3d>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>unity3d", "hide view");
}
public void _Display(String name) {
UnityPlayer.UnitySendMessage("Main Camera", "AndroidSendMessage", "");
Log.v("unity3d>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);
}
}