问题是，下面的方法被调用一次时，菜单按钮是pressed：

The problem is that the following method gets called one time when the Menu button is pressed:

public boolean onCreateOptionsMenu(Menu menu)

我怎样才能重新在以后的时间，以改变一些选项的菜单，禁用某些选项，等等？

How can I recreate the menu at a later time in order to change some options, disable some options, etc?

推荐答案

覆盖此 在prepareOptionsMenu（功能菜单）

Override this onPrepareOptionsMenu(Menu menu)

@Override
    public boolean onPrepareOptionsMenu(Menu menu) {

        MenuItem item = menu.findItem(R.id.refresh);

        if (item != null) {
         item.setVisible (shouldIShowThisItem)
        }
}