Android 为谷歌眼镜创建选项菜单

按照StopWatch GDK示例中的准则和约定，我无法打开菜单选项

我的应用程序已编译并能够输出嵌入的日志语句“@@@@TEST”，但没有显示选项菜单

这是Android API中用于菜单的方法

openOptionsMenu();

我根据秒表的惯例编写代码：

/*
 * 
 * Menu Code
 */
protected void onCreate(Bundle savedInstanceState){ 
    super.onCreate(savedInstanceState);
}

 @Override
public boolean onKeyDown(int keycode, KeyEvent event) {
    if (keycode == KeyEvent.KEYCODE_DPAD_CENTER) {
        openOptionsMenu();
        Log.v("@@@@","TEST");
        return true;
    }
    return false;
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.menu, menu);
    return true;
}
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
    // Implement if needed
    return false;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle item selection. Menu items typically start another
    // activity, start a service, or broadcast another intent.
    switch (item.getItemId()) {
        case R.id.stop:
            //startActivity(new Intent(this, StopStopWatchActivity.class));
            Log.v("@@@@","HI");
                return true;
        case R.id.read_aloud:
            Log.v("@@@@","READ_ALOUD");
            return true;
        default:
            return super.onOptionsItemSelected(item);
    }
}
    //open the optionsMenu to make sure
@Override
public void openOptionsMenu() {
        super.openOptionsMenu();

}

菜单的XML

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <item
        android:id="@+id/read_aloud"
        android:title="@string/read_aloud"
        android:icon="@drawable/ic_launcher"/>
    <item
        android:id="@+id/stop"
        android:title="@string/stop"
        android:icon="@drawable/ic_launcher"/>
</menu>

---

编辑：我发现了问题所在。我注释掉了返回false的prepared选项，这导致我的选项未启用

这里的参考资料是一个很好的例子来正确地做这件事

感谢@w9jds的帮助

我在代码中找不到问题所在，但下面是一个创建正确菜单并点击一次的工作示例解决方案

该程序所做的是显示一个玻璃应用程序，该应用程序呈现一张hello world卡。点击该卡可创建一个带有“共享”选项的选项菜单

此功能与卡片在时间轴上的工作方式非常相似

Menu-Main.Xml

<menu xmlns:android="http://schemas.android.com/apk/res/android" >

     <item
        android:id="@+id/share_menu_item"
        android:title="@string/share_label"
        android:icon="@drawable/ic_share_50"/>

</menu>

package com.example.glassmenuexample;

import com.google.android.glass.app.Card;
import com.google.android.glass.media.Sounds;
import com.google.android.glass.touchpad.Gesture;
import com.google.android.glass.touchpad.GestureDetector;

import android.media.AudioManager;
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;

public class MainActivity extends Activity 
{
    private GestureDetector mGestureDetector;

    private AudioManager maManager;

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

        //initialize the audio manager
        maManager = (AudioManager) getSystemService(this.AUDIO_SERVICE);
        //create gesture listener
        mGestureDetector = createGestureDetector(this);

        //create a new card for the view
        Card cView = new Card(this);
        //set the text of the card to the hello world string
        cView.setText(R.string.hello_world);
        //set the card as the content view
        setContentView(cView.toView());


    }

    @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;
    }


    private GestureDetector createGestureDetector(Context context) 
    {
        GestureDetector gdDetector = new GestureDetector(context);
        //Create a base listener for generic gestures
        gdDetector.setBaseListener( new GestureDetector.BaseListener() 
        {
            @Override
            public boolean onGesture(Gesture gesture) 
            {
                if (gesture == Gesture.TAP) 
                {
                    //play the tap sound
                    maManager.playSoundEffect(Sounds.TAP);
                    //open the menu
                    openOptionsMenu();
                    return true;
                } 

                return false;
            }
        });

        return gdDetector;
    }

    @Override
    public boolean onGenericMotionEvent(MotionEvent event) 
    {
        if (mGestureDetector != null) 
            return mGestureDetector.onMotionEvent(event);

        return false;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) 
    {
        // Handle item selection. Menu items typically start another
        // activity, start a service, or broadcast another intent.
        switch (item.getItemId()) 
        {
            case R.id.share_menu_item:
                //do something on menu item click
                return true;
            default:
                return super.onOptionsItemSelected(item);
        }
    }

}