Android中导入Unity项目，界面点击事件失去焦点问题

====================问题描述====================
1.将Unity中的项目导出成Android项目，再放入到Eclipse中，然后新建一个Android项目，以Unity那个项目为类库。
2.然后我开始写一个xml布局，布局中间是一个LinearLayout，上下分别是Button。LinearLayout用来放Unity里的内容。
现在遇到的问题是如果再Unity画面加载完成之前，按钮的点击事件是可以执行的。当Unity加载完成以后，按钮就失效了。根本点不了。是因为Unity盖住了整个屏幕还是占据了整个焦点？现在不知道是应该在Unity代码里面改还是在Android里面改，有大神知道么？
下面附上代码：

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

//设置布局文件
setContentView(R.layout.test);

//mUnityPlayer为一个全局的引用变量，而且已 经在父类中设置好了，所以直接拿来用就可以了
View playerView = mUnityPlayer.getView();
//将Unity的视图添加到我们为其准备的父容器中
unity = (LinearLayout) findViewById(R.id.unity);
playerView.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Toast.makeText(MainActivity.this, "222222", Toast.LENGTH_LONG).show();
}
});

unity.addView(playerView);

round = (Button) findViewById(R.id.trun_round);
round.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
UnityPlayer.UnitySendMessage("shouchengchangmaobing", "Answer", "3");

}
});
left = (Button) findViewById(R.id.left);
left.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
UnityPlayer.UnitySendMessage("shouchengchangmaobing", "Answer", "1");
}
});

}
}

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); }
}

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >

<Button
android:id="@+id/trun_round"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:text="around" />

<LinearLayout
android:id="@+id/unity"
android:layout_width="100dp"
android:layout_height="200dp"
android:layout_below="@+id/trun_round"
android:background="#ccffcc"
android:orientation="horizontal" >

</LinearLayout>

<Button
android:id="@+id/left"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:text="left" />

</RelativeLayout>

====================解决方案1====================
Unity盖住了整个屏幕？？？
按钮可见能点击不？