如何將微調添加到動作欄的標題欄？

Question

private void setTabNavigation(ActionBar bar){ 
    String[] actions = new String[] { 
      "Bookmark", 
      "Subscribe", 
      "Share" 
    }; 
    bar.removeAllTabs(); 
    bar.setDisplayHomeAsUpEnabled(true); 
    bar.setBackgroundDrawable(new ColorDrawable(Color.parseColor("#a5a5a5"))); 
    bar.setNavigationMode(ActionBar.NAVIGATION_MODE_LIST); 
    ArrayAdapter<String> adapter = new ArrayAdapter<String>(
     getBaseContext(), 
      android.R.layout.simple_spinner_dropdown_item, actions); 
} 

我該如何添加spinners到我的動作欄的title bar？除了我的標題欄外，我還可以看到小箭頭，但是如何將微調添加到它和事件偵聽器中。

Answer 1

你缺少設置

bar.setListNavigationCallbacks(adapter, mNavigationCallback); 

您在developer.android.com http://developer.android.com/guide/topics/ui/actionbar.html