Question

当用户点击某个单元格中的按钮时（查看）我想推送到另一个标签的viewcontroller

tabbarController
  ---导航控制器---- VC A
  ---导航控制器---- VC B
  ---导航控制器---- VC C ---- VC D

从viewcontroller A到viewcontroller D

我试过了segue

self.window?.visibleViewController?.performSegue(withIdentifier:"homeSegueDetailStatement", sender: self)

工作但没有导航栏......

我尝试创建一个导航控制器并呈现，崩溃......

if let visibleViewCtrl = UIApplication.shared.keyWindow?.visibleViewController {

            let nav = UINavigationController(rootViewController: visibleViewCtrl)
            let b = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "PendingStatementVC") as! PendingStatementViewController
        nav.pushViewController(b, animated:false)
            visibleViewCtrl.present(nav, animated:true, completion:nil)
        }

请帮帮我

EDIT ---

实际上我想将标签和导航更改为第二个视图控制器。我从collectionCell调用这个函数，这就是为什么我必须使用当前的viewcontroller

EDIT --- 我找到了我想要的东西

DispatchQueue.global().async {
        DispatchQueue.main.async {
            self.tabBarController?.selectedIndex = 2
                if let controller = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "DetailStatementVC") as? DetailStatementViewController {

                if let navigator = self.tabBarController?.viewControllers?[2] as? UINavigationController {
                    navigator.pushViewController(controller, animated: true)
                }
            }
        }
    }

Answer 1

使用下面的代码，您可以从VC-A转到VC-D，然后可以从VC-D返回到VC-C

let dViewController = self.storyboard?.instantiateViewController(withIdentifier: "DViewController") as! DViewController
let thirdTabNavController = self.tabBarController?.viewControllers?[2] as! UINavigationController
thirdTabNavController.pushViewController(dViewController, animated: false)
self.tabBarController?.selectedIndex = 2

Answer 2

尝试这样的事情：

let storyBoard : UIStoryboard = UIStoryboard(name: "Main", bundle:nil)
let nextViewController = storyBoard.instantiateViewController(withIdentifier: "mainView") as! MainViewController
self.present(nextViewController, animated:true, completion:nil)

Answer 3

试试这个

let mainStoryboardIpad : UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
let MainViewControllerObj : MainViewController = mainStoryboardIpad.instantiateViewController(withIdentifier: "MainViewController") as! MainViewController
let navigationControllerObj:UINavigationController = UINavigationController.init(rootViewController: MainViewControllerObj)
self.present(navigationControllerObj, animated:true, completion:nil)

Answer 4

Kamil3的答案肯定是最好的，但是如果有人需要在导航栏中的“后退”按钮旁边隐藏标题，我发现解决方案不是很优雅，但是想分享，因为它花了我很多时间：

guard let dViewController = 
    self.storyboard?.instantiateViewController(withIdentifier: "DViewController") as! DViewController,
    let thirdTabNavController = self.tabBarController?.viewControllers?[2] as! UINavigationController else {
  return
}
self.tabBarController?.selectedIndex = 2
// here what you need
thirdTabNavController.viewControllers.first?.title = " "
thirdTabNavController.pushViewController(dViewController, animated: false)

Answer 5

Try below code:

let mainStoryBoard : UIStoryboard = UIStoryboard(name: "Main", bundle:nil)
let nextViewController = mainStoryBoard.instantiateViewController(withIdentifier: "DcontrollerIdentifier") as! DViewController
 self.navigationController?.pushViewController(nextViewController, animated: true)

推送到另一个标签的viewcontroller

5 个答案: