ios - 推送 View Controller 时动画不会发生

Question

我正在尝试为按钮编辑设置动画:“同时”按下 View Controller 。但是，该按钮没有动画，但 View 已正确推送。

这是我的代码:

        createAccountButton.transform = CGAffineTransform(scaleX: 0.5, y: 0.5)
    UIView.animate(withDuration: 1, delay: 0, usingSpringWithDamping: 0.5, initialSpringVelocity: 1, options: .allowUserInteraction, animations: {
        self.createAccountButton.transform = .identity
        let signUpVC = SignUpViewController()
        //        presentDetail(signUpVC)
        let transition = CATransition()
        transition.duration = 0.5
        transition.type = CATransitionType.push
        transition.subtype = CATransitionSubtype.fromRight
        transition.timingFunction = CAMediaTimingFunction(name:CAMediaTimingFunctionName.easeInEaseOut)
        self.view.window!.layer.add(transition, forKey: kCATransition)
        self.present(signUpVC, animated: false, completion: nil)
    })

谢谢

Answer 1

您应该在动画 block 中为按钮设置动画，并在动画结束后执行的完成 block 中呈现下一个屏幕。

createAccountButton.transform = CGAffineTransform(scaleX: 0.5, y: 0.5)
  UIView.animate(withDuration: 1, delay: 0, usingSpringWithDamping: 0.5, initialSpringVelocity: 1, options: .allowUserInteraction, animations: {
     self.createAccountButton.transform = .identity
  }) { _ in
     let signUpVC = SignUpViewController()
     //        presentDetail(signUpVC)
     let transition = CATransition()
     transition.duration = 0.5
     transition.type = CATransitionType.push
     transition.subtype = CATransitionSubtype.fromRight
     transition.timingFunction = CAMediaTimingFunction(name:CAMediaTimingFunctionName.easeInEaseOut)
     self.view.window!.layer.add(transition, forKey: kCATransition)
     self.present(signUpVC, animated: false, completion: nil)
  }