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如何为PopupWindow选择菜单?
原标题:How to make an options menu for a PopupWindow?
  • 时间:2012-04-18 18:00:00
  •  标签:
  • java
  • android

几乎所有活动都有可供选择的菜单,这些活动是通过执行“CreateOptionsMenu(). 但是,在一个活动中,有一个PopupWindow,当这一PopupWindow(需要适当运作)把菜单打碎时,不会带来选择菜单。

PopupWindows没有CreateOptionsMenu()的功能。 是否有其他办法为PopupWindow增加选择菜单?

或者,是否有办法从活动背后获得选择菜单,以便在用户利用菜单时展示?

最佳回答

我通过拦截菜单钥匙,呼吁就这项活动公开宣布行动。 这里是主要听众:

OnKeyListener mMenuKeyListener = new OnKeyListener() {
    @Override
    public boolean onKey(View view, int keyCode, KeyEvent event) {
        if(keyCode==KeyEvent.KEYCODE_MENU) {
            activity.openOptionsMenu();
            return true;
        } else {
            return false;
        }
    }
};

我认为,你必须补充这一主要听众,听取PopupWindow的每一个观点,以便让它发挥作用。

public void setupMenuKeyListenerRecursive(View v) {
    if (v != null) {
        try {
            ViewGroup viewGroup = (ViewGroup)v;
            int childCount = viewGroup.getChildCount();
            for (int index = 0; index < childCount; index++) {
                View child = viewGroup.getChildAt(index);
                setupMenuKeyListenerRecursive(child);
            }
        } catch (Exception e) {
        }
        v.setOnKeyListener(mMenuKeyListener);
    }
}
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