Android中导入Unity项目，界面点击事件失去焦点问题

package com.t.t;
import com.unity3d.player.*;
import android.app.NativeActivity;
import android.content.res.Configuration;
import android.graphics.PixelFormat;
import android.os.Bundle;import android.view.KeyEvent;import android.view.MotionEvent;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// Setup activity layout@Override 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);setContentView(mUnityPlayer);mUnityPlayer.requestFocus();}// Quit Unity@Override protected void onDestroy (){mUnityPlayer.quit();super.onDestroy();}// Pause Unity@Override protected void onPause(){super.onPause();mUnityPlayer.pause();}// Resume Unity@Override protected void onResume(){super.onResume();mUnityPlayer.resume();}// This ensures the layout will be correct.@Override public void onConfigurationChanged(Configuration newConfig){super.onConfigurationChanged(newConfig);mUnityPlayer.configurationChanged(newConfig);}// Notify Unity of the focus change.@Override public void onWindowFocusChanged(boolean hasFocus){super.onWindowFocusChanged(hasFocus);mUnityPlayer.windowFocusChanged(hasFocus);}// For some reason the multiple keyevent type is not supported by the ndk.// Force event injection by overriding dispatchKeyEvent().@Override public boolean dispatchKeyEvent(KeyEvent event){if (event.getAction() == KeyEvent.ACTION_MULTIPLE)return mUnityPlayer.injectEvent(event);return super.dispatchKeyEvent(event);}// Pass any events not handled by (unfocused) views straight to UnityPlayer@Override public boolean onKeyUp(int keyCode, KeyEvent event)     { return mUnityPlayer.injectEvent(event); }@Override public boolean onKeyDown(int keyCode, KeyEvent event)   { return mUnityPlayer.injectEvent(event); }@Override public boolean onTouchEvent(MotionEvent event)          { return mUnityPlayer.injectEvent(event); }/*API12*/ public boolean onGenericMotionEvent(MotionEvent event)  { return mUnityPlayer.injectEvent(event); }}