Segue公司回来导航栏

你好，我是在视图控制器B带其导航栏，按钮，在视图控制器乙按去的ViewController C（我不想在导航栏的viewController C）Segue公司回来导航栏

let vc = self.storyboard?.instantiateViewController(withIdentifier: "viewC") as! ViewcontrollerC 
    vc.passAction = "saveedit" 
    vc.passName = passName 
    self.present(vc, animated: true, completion: nil)

当我点击保存按钮在ViewcontrollerC我应该回去ViewcontrollerB与ViewcontrollerB导航栏

let vc = self.storyboard?.instantiateViewController(withIdentifier: "viewB") as! ViewcontrollerB 
      vc.passName = "\(firstNameTxt.text!)\(" ")\(lastNameTxt.text!)" 
      self.present(vc, animated: false, completion: nil)

这里的问题是，当我回到ViewcontrollerB我没有看到导航栏那里。

EDITED

class ViewcontrollerB : UpdateDataDelegate { 

    override func viewWillAppear(_ animated: Bool) { 
     super.viewWillAppear(animated); 
     self.navigationController?.isNavigationBarHidden = false 
    } 


@IBAction func click_edit(_ sender: Any) { 

    let vc = self.storyboard?.instantiateViewController(withIdentifier: "patientPersonalData") as! patientPersonalDataVC 
    vc.passName = passName 
    vc.passAction = "saveedit" 

    self.navigationController?.pushViewController(vc, animated: true) 

    } 

func loadData() { 

} 
}

// ViewcontrollerC

protocol UpdateDataDelegate { 
    func loadData() 
} 
class Viewcontroller C { 
var delegate: UpdateDataDelegate? 

override func viewWillAppear(_ animated: Bool) { 
     super.viewWillAppear(animated) 
     self.navigationController?.isNavigationBarHidden = true 
    } 

fun click_save() { 
self.navigationController?.popViewController(animated: true) 
self.delegate?.loadData() 
}

}

来源

2017-08-10 swiftuser123

你嵌入您的视图 - 控制与导航控制器 –

@ Anbu.Karthik是的，在故事板与导航控制器 – swiftuser123

-1

试试这个..取消隐藏的导航栏在viewControllerC的viewWillAppear中，并把它藏在viewControllerB的viewWillAppear中。

//ViewController C 
override func viewWillAppear(_ animated: Bool) { 
super.viewWillAppear(animated) 
self.navigationController?.isNavigationBarHidden = true 
} 

//ViewController B 
override func viewWillAppear(_ animated: Bool) { 
super.viewWillAppear(animated); 
self.navigationController?.isNavigationBarHidden = false 
}

试试这个，然后

//ViewController C 
override func viewWillAppear(_ animated: Bool) { 
super.viewWillAppear(animated) 
self.navigationController?.setNavigationBarHidden(true, animated: true) 
} 

//ViewController B 
override func viewWillAppear(_ animated: Bool) { 
super.viewWillAppear(animated); 
    self.navigationController?.setNavigationBarHidden(false, animated: true) 
}

来源

2017-08-10 10:14:49

连接我想这并没有为我工作 – swiftuser123

尝试编辑答案 –

看来你创建一个新的ViewcontrollerB。试试这个回到ViewcontrollerB。

self.dismiss(animated: true, completion: nil)

来源

2017-08-10 10:20:06 ZHZ

你为什么不干脆就按Save按钮辞退ViewcontrollerC？

在ViewcontrollerC：

var closure: ((String)->())? //Set this closure when you present ViewcontrollerC from ViewcontrollerB 

func save() 
{ 
    self.dismiss(animated: true) {[weak self] in 
     self?.closure?("Your_Data") 
    } 
}

这将你搬回ViewControllerB其中navigation bar已经存在。

您不需要在任何地方隐藏/显示navigation bar，既不会显示ViewControllerC，也不需要关闭它。

来源

2017-08-10 10:20:09 PGDev

但在这里你不能将数据发送到前一个控制器。我想将我在ViewcontrollerC中添加的新数据发送给ViewcontrollerB。 – swiftuser123

您可以为此使用闭包，并在完成解雇方法时调用闭包。 – PGDev

我编辑了答案。看一看。 – PGDev

尝试使用导航控制器

let vc = self.storyboard!.instantiateViewController(withIdentifier: "viewC") as! ViewcontrollerC 
let navController = UINavigationController(rootViewController: vc) 
self.present(navController, animated:true, completion: nil)

出示它，并添加下面一行在你ViewcontrollerC的viewWillAppear中的方法。

override func viewWillAppear(_ animated: Bool) { 
super.viewWillAppear(animated) 
self.navigationController?.isNavigationBarHidden = true 
}

当离开ViewcontrollerC的viewWillDisAppear方法。

override func viewWillDisAppear(_ animated: Bool) { 
super.viewWillDisAppear(animated) 
self.navigationController?.isNavigationBarHidden = false 
}

来源

2017-08-10 10:24:34 Ved

Segue公司回来导航栏

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