为什么不调用 onMenuOpened？

Question

一个应用程序通过以下方式隐藏操作栏：

    uiOptions =  View.SYSTEM_UI_FLAG_HIDE_NAVIGATION| View.SYSTEM_UI_FLAG_FULLSCREEN
            | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
            | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
            | View.SYSTEM_UI_FLAG_LAYOUT_STABLE;
    //Hide both the status bar and navigation bar
    getWindow().getDecorView().setSystemUiVisibility(uiOptions);

触摸屏幕时，调用以下方法显示操作栏：

uiOptions = View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
        | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
        | View.SYSTEM_UI_FLAG_LAYOUT_STABLE;
decorView.setSystemUiVisibility(uiOptions);

除了点击三点后打开溢出菜单，activity 的 onMenuOpened 没有被调用，但菜单正常打开时，一切正常。

有人能解释一下吗？

Answer 1

可能this.

The reason that onMenuOpened() and onPanelClosed() are not called is that Activity's default implementations of those methods will try and init the framework Action Bar.

为什么不调用 onMenuOpened？

Why is onMenuOpened is not called?

android

android-actionbar