Android向unity发送消息

有些时候需要Android向unity发送消息，有两种方法实现，一、通过unity再带的消息机制，二、通过注册回调的方式。

一、通过UnityPlayer.UnitySendMessage（）；方法

详细的可以参考http://www.xuanyusong.com/archives/676

二、注册回调

用到的是 AndroidJavaProxy 这个类

下面是代码

Android部分

接口

public interface ExActivityListener {
    public void onRestart();
    public void onStart();
    public void onResume();
    public void onPause();
    public void onStop();
    public void onActivityResult(int requestCode, int resultCode, Intent data);
    public void onTest();
}

public class MainActivity extends UnityPlayerActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

    }
    private ExActivityListener listener;
    public void setListener(ExActivityListener listener)
    {
        Log.v("Unity", "setListener(1)!------------");
        this.listener = listener;
    }

    @Override
    public void onRestart()
    {
        Log.v("Unity", "onRestart!------------");
        super.onRestart();
        if(listener != null) listener.onRestart();
    }

    @Override
    public void onStart()
    {
        super.onStart();
        if(listener != null) listener.onStart();
    }

    @Override
    public void onResume()
    {
        super.onResume();
        if(listener != null) listener.onResume();
    }

    @Override
    public void onPause()
    {
        super.onPause();
        if(listener != null) listener.onPause();
    }

    @Override
    public void onStop()
    {
        if(listener != null) listener.onStop();
        super.onStop();
    }

    public void onTest()
    {
        if(listener != null) listener.onTest();
        super.onStop();
    }
    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data)
    {
        if(listener != null) listener.onActivityResult(requestCode, resultCode, data);
    }
    public String test()
    {
        Log.v("测试","成功");
        onTest();
        return "测试成功";
    }
}

unity代码

    public class ActivityListener : AndroidJavaProxy  
    {  
        public ActivityListener() : base("com.test.mytest.ExActivityListener")  
        {  
        }  

        public void onRestart()  
        {  
            UnityEngine.Debug.LogError("Back to Unity onRestart");  
        }  

        public void onStart()  
        {  
            UnityEngine.Debug.LogError("Back to Unity onStart");  
        }  

        public void onResume()  
        {  
            UnityEngine.Debug.LogError("Back to Unity onResume");  
        }  

        public void onPause()  
        {  
            UnityEngine.Debug.LogError("Back to Unity onPause");  
        }  

        public void onStop()  
        {  
            UnityEngine.Debug.LogError("Back to Unity onStop");  
        }  

        public void onActivityResult(int requestCode, int resultCode, AndroidJavaObject data)  
        {  
            UnityEngine.Debug.LogError("onActivityResult");  
        }  
        public void onTest()  
        {  
            UnityEngine.Debug.LogError("Back to Unity OnTest");  
        }  
    }  

    void Awake()  
    {  
        AndroidJavaObject activity = new AndroidJavaClass("com.unity3d.player.UnityPlayer").GetStatic<AndroidJavaObject>("currentActivity");  
        activity.Call("setListener", new ActivityListener());  
        UnityEngine.Debug.LogError("Awake");  
    }  

    void Start()
    {
        AndroidJavaObject activity = new AndroidJavaClass("com.unity3d.player.UnityPlayer").GetStatic<AndroidJavaObject>("currentActivity");  
        string value2 = activity.Call<string>("test");  
        Debug.Log (value2);

    }
}

如果报找不到类的错误，把AndroidManifest.Xml导进unity试试