如何在打开侧边菜单(SWRevealviewController)时关闭键盘？

view.endEditing(true)

if let revealViewController = self.revealViewController() {
    revealViewController.delegate = self
    // 添加打开事件监听
    revealViewController.rearViewRevealWidth = 200 // 侧边菜单的宽度
    yourOpenMenuButton.addTarget(revealViewController, action: #selector(SWRevealViewController.revealToggle(_:)), for: .touchUpInside)
    self.view.addGestureRecognizer(revealViewController.panGestureRecognizer())
}

func revealController(_ revealController: SWRevealViewController!, willMoveTo position: FrontViewPosition) {
    if position == .right { // 侧边菜单即将打开
        view.endEditing(true) // 关闭键盘
    }
}