Ẩn NativationBar khi vuốt in IOS

extension DetailViewController : UIScrollViewDelegate {

    

    

    func scrollViewDidScroll(_ scrollView: UIScrollView) // any offset changes

    {

        

        

    }

    func scrollViewWillEndDragging(_ scrollView: UIScrollView, withVelocity velocity: CGPoint, targetContentOffset: UnsafeMutablePointer<CGPoint>) {

        

        if(velocity.y>0) {

            

            UIView.animate(withDuration: 2.5, delay: 0, options: UIViewAnimationOptions(), animations: {

                self.navigationController?.setNavigationBarHidden(true, animated: true)

                //self.navigationController?.setToolbarHidden(true, animated: true)

                print("Hide")

                

            }, completion: nil)

            

        } else {

            UIView.animate(withDuration: 2.5, delay: 0, options: UIViewAnimationOptions(), animations: {

                self.navigationController?.setNavigationBarHidden(false, animated: true)

                //self.navigationController?.setToolbarHidden(false, animated: true)

                print("Unhide")

            }, completion: nil)

        }

        

    }

    

}

Fix loi PageView bị nativation che Controler view in IOS

- Chỉ cần vào property -- > un check Under Top Bar

Ẩn nativation in IOS

self.navigationController?.setNavigationBarHidden(true, animated: true)

Tham khảo cách cập nhật màu Nativation bằng code

self.navigationBar.barTintColor = [UIColor blueColor];
self.navigationBar.tintColor = [UIColor whiteColor];
self.navigationBar.translucent = NO;

Cài đặt Nativation Bar

func initBtnBar(){

        

        let imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 30, height: 30))

        imageView.contentMode = .scaleAspectFit

        let image = UIImage(named: "logo-white.png")

        imageView.image = image

        navigationItem.titleView = imageView

        //navigationItem.titleView?.sizeToFit()

        

        

        let myBackButton = UIButton(type: UIButtonType.custom)

        myBackButton.frame = CGRect(x: 0, y: 0, width: 35.0, height: 35.0)

        //myBackButton.addTarget(self, action: #selector(self.btnMenuLeftClicked), for: .touchUpInside)

        myBackButton.setImage( UIImage(named: "icon-menu.png")?.resizedImageWithinRect( rectSize: CGSize(width: 35, height: 35)), for: .normal )

        

        let myBackButtonBtn = UIBarButtonItem(customView: myBackButton)

        

        let myBackButtonBtnMargin = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.fixedSpace, target: nil, action: nil)

        myBackButtonBtnMargin.width = -12

        self.navigationItem.leftBarButtonItems  = [myBackButtonBtnMargin,myBackButtonBtn]

        

        

        let myBackButtonRight = UIButton(type: UIButtonType.custom)

        myBackButtonRight.frame = CGRect(x: 0, y: 0, width: 35.0, height: 35.0)

        //myBackButtonRight.addTarget(self, action: #selector(self.btnMenuRightClicked), for: .touchUpInside)

        myBackButtonRight.setImage(UIImage(named: "icon_send_office.png")?.resizedImageWithinRect(rectSize: CGSize(width: 35, height: 35)), for: .normal)

        

        let myBackButtonRightBtn = UIBarButtonItem(customView: myBackButtonRight)

        

        let myBackButtonRightBtnMargin = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.fixedSpace, target: nil, action: nil)

        myBackButtonRightBtnMargin.width = -12

        self.navigationItem.rightBarButtonItems  = [myBackButtonRightBtnMargin,myBackButtonRightBtn]

        

        

 }

- Gắn thêm : 

extension UIImage {

    

    /// Returns a image that fills in newSize

    func resizedImage(newSize: CGSize) -> UIImage {

        // Guard newSize is different

        guard self.size != newSize else { return self }

        

        UIGraphicsBeginImageContextWithOptions(newSize, false, 0.0);

        self.draw(in: CGRect(x:0, y:0, width:newSize.width,height: newSize.height))

        let newImage: UIImage = UIGraphicsGetImageFromCurrentImageContext()!

        UIGraphicsEndImageContext()

        return newImage

    }

    

    /// Returns a resized image that fits in rectSize, keeping it's aspect ratio

    /// Note that the new image size is not rectSize, but within it.

    func resizedImageWithinRect(rectSize: CGSize) -> UIImage {

        let widthFactor = size.width / rectSize.width

        let heightFactor = size.height / rectSize.height

        

        var resizeFactor = widthFactor

        if size.height > size.width {

            resizeFactor = heightFactor

        }

        

        let newSize = CGSize(width:size.width/resizeFactor,height: size.height/resizeFactor)

        let resized = resizedImage(newSize: newSize)

        return resized

    }

    

}

Tạo navigator và di chuyễn các màn hỉnh ios

// tạo navigator

Editor -- > Embed in --> Navigator controler 

// di chuyen toi man hinh và truyền dữ liệu

 let sb = UIStoryboard(name: "Main", bundle: nil)

        let manHinhXanh = sb.instantiateViewController(withIdentifier: "ManHinhXanh") as! ManHinhXanhViewController

  manHinhXanh.textHoTen = txtText.text

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

* day man hinh hien tai ra 

self.navigationController?.popViewController(animated: true)

* day ve man hinh goc 

self.navigationController?.popToRootViewController(animated: true)

* Day toi mot man hinh

let sb = UIStoryboard(name: "Main", bundle: nil)

let manHinh = sb.instantiateViewController(withIdentifier: "ManHinhXanh") as! ManHinhXanhViewController

        

        self.navigationController?.popToViewController(manHinh, animated: true)

// vong doi 


   // chạy trước khi hiển thị màn hình

   override func viewWillAppear(_ animated: Bool) {

        print("viewWillAppear() : Đỏ ")

        txtTextXanh.text = textHoTen ;

    }

    
    // chạy sau khi hiển thị giao diện

    override func viewDidAppear(_ animated: Bool) {

        print("viewDidAppear() : Đỏ ")

        

    }

    
   // trước khi mất giao diện

    override func viewWillDisappear(_ animated: Bool) {

        print("viewWillDisappear() : Đỏ ")

    }

    
    // sau khi mất giao diện

    override func viewDidDisappear(_ animated: Bool) {

        print("viewWillDisappear() : Đỏ ")

    }