Android与Unity3D交互。启动UnityActivity出现黑屏、第一次要加载、第二次则秒开

Android工程：新建两个类。MyUnityPlayerActivity、MyUnityPlay

import android.app.Activity;import android.content.res.Resources;import android.graphics.PixelFormat;import android.os.Bundle;import android.os.Handler;import android.view.Window;import android.widget.ImageView;import com.unity3d.player.UnityPlayer;import com.unity3d.player.UnityPlayerActivity;import static com.unity3d.player.UnityPlayer.currentActivity;public class MyUnityPlayerActivity extends UnityPlayerActivity{    private static Activity mActivity;    // 这是启动画面的图片，这里可以使任意一个View，可以根据自己的需要去自定义    private ImageView bgView = null;    //Unity3D 点击返回按钮事件    public void Exit()    {        moveTaskToBack(true);    }    public void OnShowSplash()    {        if (bgView != null)            return;        try        {            bgView = new ImageView(currentActivity);            bgView.setImageResource(R.drawable.splash);            bgView.setScaleType(ImageView.ScaleType.FIT_XY);            Resources r = currentActivity.getResources();            mUnityPlayer.addView(bgView, r.getDisplayMetrics().widthPixels, r.getDisplayMetrics().heightPixels);        }        catch (Exception e)        {            e.printStackTrace();        }    }    // 在unity的Activity中暴露方法给unity，让unity在准备好内容后调用隐藏启动画面    public void OnHideSplash() {        try {            if (bgView == null)                return;            currentActivity.runOnUiThread(new Runnable()            {                public void run()                {                    mUnityPlayer.removeView(bgView);                    bgView = null;                }            });        }        catch (Exception e)        {            e.printStackTrace();        }    }    @Override    protected  void  onDestroy()    {        super.onDestroy();    }    @Override    protected void onCreate(Bundle savedInstanceState) {        requestWindowFeature(Window.FEATURE_NO_TITLE);        super.onCreate(savedInstanceState);        mActivity = this;        getWindow().setFormat(PixelFormat.RGBX_8888); // <--- This makes xperia play happy        mUnityPlayer = new MyUnityPlay(this);        setContentView(mUnityPlayer);        mUnityPlayer.requestFocus();        OnShowSplash();    }    // Resume Unity    @Override    protected void onResume()    {        super.onResume();        new Handler().post(new Runnable()        {            @Override            public void run()            {                mUnityPlayer.resume();                currentActivity.runOnUiThread(new Runnable() {                    @Override                    public void run()                    {                        UnityPlayer.UnitySendMessage("Root","CommodityID","1");                        //Unity3D 随便写一个类，需要挂载到Root物体上。                        //这个类里边有个CommodityID方法，该方法有参数string                    }                });            }        });    }}

import android.content.ContextWrapper;import com.unity3d.player.UnityPlayer;public class MyUnityPlay extends UnityPlayer{    public MyUnityPlay(ContextWrapper contextWrapper) {        super(contextWrapper);    }}

AndroidMainfest.xml 文件

commodity.html  这里是用H5写的调用UnityActivityfunction aaaaaaaaaaaaaaaaaaaa(){   var Intent = plus.android.importClass("android.content.Intent");   var MyUnityPlayerActivity = plus.android.importClass("com.包名.MyUnityPlayerActivity");   var intent=new Intent();   var main = plus.android.runtimeMainActivity();      intent.setClass(main,MyUnityPlayerActivity.class);             main.startActivity(intent);             main.overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out);}

Unity3D 工程：随便写一个类，需要挂载到Root物体上。

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System;
using MySql.Data.MySqlClient;
using System.Data;
using I18N;
using I18N.West;
using I18N.CJK;
using UnityEngine.EventSystems;
using UnityEngine.UI;
using UnityEngine.Networking;
using System.Linq;

public class MyTest :MonoBehaviour
{

private AndroidJavaObject my_activity;
void Awake()
{
AndroidJavaClass jc = new AndroidJavaClass("com.xywf.MyUnityPlayerActivity");
my_activity = jc.GetStatic("mActivity");
}
///

/// 点击Unity3D里的返回按钮调用Android里的方法
///

public void Return()
{
my_activity.Call("Exit");
}
///

/// 隐藏启动UnityActivity的启动图
///

IEnumerator HideAndroidSplash()
{
yield return new WaitForSeconds(0f);
my_activity.Call("OnHideSplash");
}

private void Start()
{
StartCoroutine(HideAndroidSplash());//在Start里重写Android写的启动图(非APP启动图，跳UnityActivity的黑屏图)
}

//android 要调用的方法
public void CommodityID(string commodityID)
{
}

}

本人并不懂Android，瞎猫碰死耗子。如有不对的地方，请尽管指点。

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