macos – 有时在NSPopover错误的位置,在El Capitan

我正在建立一个小状态栏应用程序,当我点击它显示NSPopover的图标.一切正常,直到我升级到El Capitan.问题是当我第一次启动应用程序时,我模拟状态栏图标自动按下,因为我想看到弹出框,它出现在屏幕的左下角.关闭它并再次打开后,它从屏幕顶部显示正常.你觉得有什么不对吗？这是代码,当我在showPopover中打印值时没有错

private let menu = MenuBarController()

override init() {
    super.init()

    self.menu.onMouseDown = {
        if (self.menu.iconView?.isSelected == true) {
            self.showPopover()
        } else {
            self.hidePopover()
        }
    }
}
func showPopover() {
    let icon = self.menu.iconView!
    let edge = NSRectEdge.MinY
    let rect = icon.frame
    self.popover?.showRelativeToRect(rect,ofView: icon,preferredEdge: edge);
}
func applicationDidFinishLaunching(aNotification: NSNotification) {
    let icon = self.menu.iconView!
    icon.mouseDown(NSEvent())
}

此外,如果我在一小段延迟后模拟图标按下它的工作原理.

func applicationDidFinishLaunching(aNotification: NSNotification) {
    showPopover() // If you only have this,then popover will open in bottom left corner

    hidePopover() // Adding this
    showPopover() // and this will open it from the status bar button.
}