Android菜单在Android平板电脑上无法显示

Question

大家。这是我的代码。菜单在我的手机上完美运行。但是在我的平板电脑（Android 4.0）上它没有显示它（“关于”，“信息”，“网站”）。

public final class IntentsDemoActivity extends Activity implements OnItemClickListener {

    public static final int ABOUT = 0;
    public static final int INFO = 1;
    public static final int WEBSITE = 2;    


   // This is the value of Intent.EXTRA_LOCAL_ONLY for API level 11 and above.
   private static final String EXTRA_LOCAL_ONLY = "android.intent.extra.LOCAL_ONLY";
   private static final String VIDEO_ID = "-Uwjt32NvVA";
   private static final String PLAYLIST_ID = "PLF3DFB800F05F551A";
   private static final String USER_ID = "Google";
   private static final int SELECT_VIDEO_REQUEST = 1000;

   private List<DemoListViewItem> intentItems;


   public boolean onCreateOptionsMenu(android.view.Menu menu) {
    super.onCreateOptionsMenu(menu);
    menu.add(0, ABOUT,0, "About").setIcon(R.drawable.about);
    menu.add(0, INFO,0, "Info").setIcon(R.drawable.info);
    menu.add(0, WEBSITE,0, "Website").setIcon(R.drawable.website);
    return true;
    }

     public boolean onMenuItemSelected(int featureId, MenuItem item) {
    switch (item.getItemId()) {
    case ABOUT:
        Toast.makeText(IntentsDemoActivity.this, "About", Toast.LENGTH_SHORT).show();
        Uri uri = Uri.parse("https://www.google.com/about);
        Intent it = new Intent(Intent.ACTION_VIEW,uri);
        startActivity(it);
        return true;

        case PAGE:
        Toast.makeText(IntentsDemoActivity.this, "Info", Toast.LENGTH_SHORT).show();
        Uri uri = Uri.parse("https://www.google.com/info");
        Intent it = new Intent(Intent.ACTION_VIEW,uri);
        startActivity(it);
        return true;
       case WEBSITE:
      Toast.makeText(IntentsDemoActivity.this, "Webiste", Toast.LENGTH_SHORT).show();
      Uri uri1 = Uri.parse("http://www.google.com/");
        Intent it1 = new Intent(Intent.ACTION_VIEW,uri1);
        startActivity(it1);
      return true;

      }
      return false;
  }




   @Override
   public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.intents_demo);

intentItems = new ArrayList<DemoListViewItem>();
intentItems.add(new IntentItem("X", IntentType.X));
intentItems.add(new IntentItem("Play Video", IntentType.PLAY_VIDEO));
intentItems.add(new IntentItem("Open Playlist", IntentType.OPEN_PLAYLIST));
intentItems.add(new IntentItem("Play Playlist", IntentType.PLAY_PLAYLIST));
intentItems.add(new IntentItem("Open User", IntentType.OPEN_USER));
intentItems.add(new IntentItem("Open Search Results", IntentType.OPEN_SEARCH));
intentItems.add(new IntentItem("Upload Video", IntentType.UPLOAD_VIDEO));

ListView listView = (ListView) findViewById(R.id.intent_list);
DemoArrayAdapter adapter =
    new DemoArrayAdapter(this, R.layout.list_item, intentItems);
listView.setAdapter(adapter);
listView.setOnItemClickListener(this);

TextView youTubeVersionText = (TextView) findViewById(R.id.youtube_version_text);
String version = YouTubeIntents.getInstalledYouTubeVersionName(this);
if (version != null) {
  String text = String.format(getString(R.string.youtube_currently_installed), version);
  youTubeVersionText.setText(text);
} else {
  youTubeVersionText.setText(getString(R.string.youtube_not_installed));
}
   }

   public boolean isIntentTypeEnabled(IntentType type) {
switch (type) {
  case PLAY_VIDEO:
    return YouTubeIntents.canResolvePlayVideoIntent(this);
  case OPEN_PLAYLIST:
    return YouTubeIntents.canResolveOpenPlaylistIntent(this);
  case PLAY_PLAYLIST:
    return YouTubeIntents.canResolvePlayPlaylistIntent(this);
  case OPEN_SEARCH:
    return YouTubeIntents.canResolveSearchIntent(this);
  case OPEN_USER:
    return YouTubeIntents.canResolveUserIntent(this);
  case UPLOAD_VIDEO:
    return YouTubeIntents.canResolveUploadIntent(this);
}

return false;
   }

    @Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
IntentItem clickedIntentItem = (IntentItem) intentItems.get(position);

     Intent intent;
switch (clickedIntentItem.type) {
case X:
    // This will load a picker view in the users' gallery.
    // The upload activity is started in the function onActivityResult.
    intent = new Intent(Intent.ACTION_PICK, null).setType("video/*");
    intent.putExtra(EXTRA_LOCAL_ONLY, true);
    startActivityForResult(intent, SELECT_VIDEO_REQUEST);
    break;

case PLAY_VIDEO:
    intent = YouTubeIntents.createPlayVideoIntentWithOptions(this, VIDEO_ID, true, false);
    startActivity(intent);
    break;
  case OPEN_PLAYLIST:
    intent = YouTubeIntents.createOpenPlaylistIntent(this, PLAYLIST_ID);
    startActivity(intent);
    break;
  case PLAY_PLAYLIST:
    intent = YouTubeIntents.createPlayPlaylistIntent(this, PLAYLIST_ID);
    startActivity(intent);
    break;
  case OPEN_SEARCH:
    intent = YouTubeIntents.createSearchIntent(this, USER_ID);
    startActivity(intent);
    break;
  case OPEN_USER:
    intent = YouTubeIntents.createUserIntent(this, USER_ID);
    startActivity(intent);
    break;
  case UPLOAD_VIDEO:
    // This will load a picker view in the users' gallery.
    // The upload activity is started in the function onActivityResult.
    intent = new Intent(Intent.ACTION_PICK, null).setType("video/*");
    intent.putExtra(EXTRA_LOCAL_ONLY, true);
    startActivityForResult(intent, SELECT_VIDEO_REQUEST);
    break;
    }
   }

     @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent returnedIntent) {
    if (resultCode == RESULT_OK) {
  switch (requestCode) {
    case SELECT_VIDEO_REQUEST:
      Intent intent = YouTubeIntents.createUploadIntent(this, returnedIntent.getData());
      startActivity(intent);
      break;
  }
}
super.onActivityResult(requestCode, resultCode, returnedIntent);
  }

    private enum IntentType {
  X,
PLAY_VIDEO,
OPEN_PLAYLIST,
PLAY_PLAYLIST,
OPEN_USER,
OPEN_SEARCH,
UPLOAD_VIDEO;
    }

     private final class IntentItem implements DemoListViewItem {

     public final String title;
 public final IntentType type;

      public IntentItem(String title, IntentType type) {
  this.title = title;
  this.type = type;
    }

    @Override
public String getTitle() {
  return title;
    }

     @Override
public boolean isEnabled() {
  return isIntentTypeEnabled(type);
    }

    @Override
public String getDisabledText() {
  return getString(R.string.intent_disabled);
   }

 }

}