swift - 如何更改 leftBarButtonItem 上 pushViewController 的动画方向？

Question

我已将 leftBarButtonItem 添加到 NavigationBar(与 NavigationController 结合使用)。 leftBarButtonItem 在顶部的 ViewController 上。

当我使用 pushViewController 函数转到下一个 ViewController 时，动画是从右到左的，就像按下导航栏右侧的按钮时一样。

如何将动画方向更改为从左到右，就像在 Tinder 中按下导航栏上的左按钮时一样？

代码如下:

let profileButton = UIBarButtonItem(image: #imageLiteral(resourceName: "profile"), style: .plain, target: self, action: #selector(self.showProfile))
    self.navigationItem.leftBarButtonItem = profileButton

@objc func showProfile() {
    let profileViewController = storyboard?.instantiateViewController(withIdentifier: "profile") as! ProfileViewController
    self.navigationController?.pushViewController(profileViewController, animated: true)
}

Answer 1

要在推送到另一个 viewController 时设置动画，您可以使用 CATransition

@objc func showProfile() {
    let profileViewController = storyboard?.instantiateViewController(withIdentifier: "profile") as! ProfileViewController
    let transition = CATransition()
    transition.duration = 0.5
    transition.timingFunction = CAMediaTimingFunction(name: CAMediaTimingFunctionName.easeInEaseOut)
    transition.type = CATransitionType.push
    transition.subtype = CATransitionSubtype.fromLeft       
    navigationController?.view.layer.add(transition, forKey: kCATransition)
    self.navigationController?.pushViewController(profileViewController, animated: true)
}

您可以将动画方向更改为fromRight, fromTopfromBottom