Android的code获取选项菜单编程？ [英] Android code for getting Options Menu programmatically?

问题描述

Android的code获取选项菜单编程android系统中显示活动后??

Android code for getting Options Menu programmatically in android after displaying the Activity??

这可能吗？
在此先感谢！

Is this possible? Thanks in advance!!

推荐答案

我能够通过挂钩onAttachedToWindow（）事件打开菜单。创建视图后，这会自动启动。我用下面的code：

I was able to open the menu by hooking the onAttachedToWindow() event. This would fire automatically after the view was created. I used the following code:

@Override
public void onAttachedToWindow() {
    super.onAttachedToWindow();
    try {
        ((Activity) this).openOptionsMenu();        
    } catch (Exception ex) {
        Log.e("ERR", "Error: " + ex.getMessage());
    }
}

当我试图在的onCreate（...）或onPostCreate（...），打开选项菜单事件，我收到以下错误：无法添加窗口 - 令牌空无效是您的活动运行？似乎直到视图正在绘制和注册到该窗口的选项菜单不可用。

When I attempted to open the Option Menu in the "onCreate(...)" or "onPostCreate(...)" events, I received the following error: "Unable to add window -- token null is not valid; is your activity running?" It seems that the Option Menu is not available until the view is being drawn and registered to the Window.

顺便说一句，它可以是preferable通过挂钩onTouchEvent（运动事件）作为在打开选项菜单：

As an aside, it may be preferable to open the Options Menu by hooking the "onTouchEvent(Motion event)" as in:

@Override
public boolean onTouchEvent(MotionEvent event) {
    ((Activity) this).openOptionsMenu();
    return super.onTouchEvent(event);
}

这样，如果用户点击或挥笔活动显示的选项菜单。为了完善的讨论中，选项菜单可以通过下面的命令予以辞退：

This way, the Options Menu is displayed if the user taps or swipes the activity. To round out the discussion, the Option Menu may be dismissed via the following command:

（（活动）mContext）.closeOptionsMenu（）;

((Activity) mContext).closeOptionsMenu();

因此​​，选项菜单可以被翻转，使用下面的命令：

Thus, the Options Menu can be "toggled" by using the following commands:

    ((Activity) this).openOptionsMenu();
    ((Activity) this).closeOptionsMenu(); 

好了，我希望这有助于。

Well, I hope this helps.

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