Question

我正在尝试从视图切换到另一个视图，代码运行，但没有任何视图被推送。是不是由于视图无法弹出并同时推送？

pushview ：

func showChatControllerForGroup(_ user: [User], groupName: String) {

    let storyboard = UIStoryboard(name: "Main", bundle: nil)
    let vc: GroupChatMessangingViewController = storyboard.instantiateViewController(withIdentifier: "GroupChatMessangingViewController") as! GroupChatMessangingViewController

        vc.group?.members = user
        vc.group?.name = groupName
        self.navigationController?.pushViewController(vc, animated: true)
}

弹出

 let transition = CATransition()
    transition.duration = 0.5
    transition.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
    transition.type = kCATransitionReveal
    transition.subtype = kCATransitionFromBottom
    navigationController?.view.layer.add(transition, forKey: nil)
    _ = navigationController?.popViewController(animated: true)
        let user = self.chosenUser
        self.nextVC.showChatControllerForGroup(user, groupName: self.groupNameTextField.text!)

Answer 1

在pop viewcontroller

之前调用delegate方法

let transition = CATransition()
        transition.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
        transition.type = kCATransitionReveal
        transition.subtype = kCATransitionFromBottom
        navigationController?.view.layer.add(transition, forKey: nil)
    let user = self.chosenUser
            self.nextVC.showChatControllerForGroup(user, groupName: self.groupNameTextField.text!)
        _ = navigationController?.popViewController(animated: true)

Answer 2

为PushViewController尝试此语法：

    let nextVC = self.storyboard?.instantiateViewController(withIdentifier: "NextViewController") as!   NextViewController
    self.navigationController?.pushViewController(nextVC, animated: true)

对于pop：

    self.navigationController?.popViewController(animated: true)

在Swift

2 个答案: