using Unity Android but action bar doesn't works

Question

I exported a simple animation from Unity3D (version 4.5) in android project. With eclipse I modified the manifest and added another activity.

In this activity I put a button that it makes start the animation,and this is the result.

The action bar appear in the main activity and in unity's activity but it doesn't work in the unity's activity :(

This is a screenshot of the first activity where the action bar correctly works :

And this is a screenshot of the second activity where the action bar doesn't work, it isn't clickable:

_{(source: tapatalk.com)}

This is the unity's activity's code :

package com.rabidgremlin.tut.redcube;

import android.app.ActionBar.LayoutParams;
import android.app.NativeActivity;
import android.content.res.Configuration;
import android.graphics.PixelFormat;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;

import com.unity3d.player.UnityPlayer;

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_Holo_Light);
    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);
}
// proviamo ad abilitare l'action bar :
@Override
public boolean onCreateOptionsMenu(Menu menu) {

    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();
    if (id == R.id.action_settings) {
        return true;
    }
    return super.onOptionsItemSelected(item);
}
// 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); }
    }

And this is the manifest :

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.rabidgremlin.tut.redcube"
android:installLocation="auto"

android:versionCode="1"
android:versionName="1.0" >
<!--  android:theme="@android:style/Theme.NoTitleBar"-->
<supports-screens
    android:anyDensity="true"
    android:largeScreens="true"
    android:normalScreens="true"
    android:smallScreens="true"
    android:xlargeScreens="true" />

  <application
     android:icon="@drawable/app_icon"
    android:label="@string/app_name"
    android:theme="@android:style/Theme.Holo.Light"  >
     
    <activity
        android:name="com.rabidgremlin.tut.redcube.UnityPlayerNativeActivity"
               android:configChanges="mcc|mnc|locale|touchscreen|keyboard|keyboardHidden|navigation|orient        action|screenLayout|uiMode|screenSize|smallestScreenSize|fontScale"
        android:label="@string/app_name"
       
        android:screenOrientation="portrait" >
 <!--android:launchMode="singleTask"-->
        <meta-data
            android:name="unityplayer.UnityActivity"
            android:value="true" />
        <meta-data
            android:name="unityplayer.ForwardNativeEventsToDalvik"
            android:value="false" />
    </activity>
    <activity
        android:name="com.rabidgremlin.tut.redcube.MainActivity"
        android:label="@string/title_activity_main" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
</application>
<uses-sdk
    android:minSdkVersion="17"
    android:targetSdkVersion="19" />

<uses-feature android:glEsVersion="0x00020000" />

</manifest>

Why isn't the action bar in unity's activity clickable ??

EDIT : I modified oncreate() in this way:

public class UnityPlayerNativeActivity extends Activity
{
protected UnityPlayer mUnityPlayer;        // don't change the name of this variable;  referenced from native code

// Setup activity layout
@Override protected void onCreate (Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    getWindow().takeSurface(null);
    setTheme(android.R.style.Theme_Holo_Light);
    getWindow().setFormat(PixelFormat.RGB_565);

    mUnityPlayer = new UnityPlayer(this);
    setContentView(mUnityPlayer);
    mUnityPlayer.requestFocus();
}

And now the action bar is clickable,but I have a question : What change from extends NativeActivity to Activity ?