Ios 键盘视图与使用UIViewControllerTransitioningDelegate的模式显示视图混淆

我使用

UIViewControllerTransitioningDelegate

实例作为

TransitioningDelegate和modalPresentationStyle=Custom

来呈现另一个视图。 我使用的是

TableViewController

使用的是内部带有

UITextfields

的静态表视图单元格。现在，当在边框靠近键盘框架的文本字段上点击时，键盘下方的部分tableView会显示出来。我还删除了一个添加到半透明背景中的

uitappesturerecognizer

，以确保它不是问题的一部分，但问题仍然存在。有什么想法吗？下面是

animateTransition（）

方法

  func animateTransition(transitionContext: UIViewControllerContextTransitioning) {

dimmingView.backgroundColor = UIColor(white: 0.0, alpha: 0.5)
let containerView = transitionContext.containerView()
if let presentedViewController = transitionContext.viewControllerForKey(UITransitionContextToViewControllerKey) {

    let presentedView = presentedViewController.view
    let fromView = transitionContext.viewForKey(UITransitionContextFromViewControllerKey)
    let centre = presentedView.center

    if isPresenting {

        presentedView.center = containerView.center
        presentedView.frame = presentedView.bounds.rectByInsetting(dx: 30, dy: 150)

        transitionContext.containerView().addSubview(presentedView)

        dimmingView.frame = containerView.bounds
        dimmingView.alpha = 0.0
        containerView.insertSubview(dimmingView, atIndex: 0)

        presentedViewController.transitionCoordinator()?.animateAlongsideTransition({
            context in
            self.dimmingView.alpha = 1.0
            }, completion: nil)

    }
    else {
        presentedViewController.transitionCoordinator()?.animateAlongsideTransition({
            context in
            self.dimmingView.alpha = 0.0
            }, completion: {
                context in
                self.dimmingView.removeFromSuperview()
        })
    }



    UIView.animateWithDuration(self.transitionDuration(transitionContext),
        delay: 0, usingSpringWithDamping: 0.6, initialSpringVelocity: 10.0, options: nil,
        animations: {
            presentedView.center = centre
        }, completion: {
            _ in
            transitionContext.completeTransition(true)
    })
}

}