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