I have totally different layouts for landscape and portrait.

In portrait the screen does not have the menu on left and in landscape the screen contains the menu on left side.

Is that possible to do so in iOS?

CodePudding user response：

You can do it programmatically, declare your button menu under your class controller like that:

let myButton: UIButton = {
    let b = UIButton()
    b.backgroundColor = .white
    b.setTitle("Menu", for: .normal)
    b.setTitleColor(.black, for: .normal)
    b.titleLabel?.font = .systemFont(ofSize: 17, weight: .semibold)
    b.layer.cornerRadius = 16
    b.clipsToBounds = true
    b.alpha = 0
    b.isEnabled = false
    b.translatesAutoresizingMaskIntoConstraints = false
    
    return b
}()

Now in viewDidLoad set constraints and cal the detect func:

override func viewDidLoad() {
    super.viewDidLoad()
    
    view.backgroundColor = .darkGray
    
    view.addSubview(myButton)
    myButton.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor).isActive = true
    myButton.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor, constant: 20).isActive = true
    myButton.heightAnchor.constraint(equalToConstant: 50).isActive = true
    myButton.widthAnchor.constraint(equalToConstant: 120).isActive = true
    
    detectRotation()
}

after that write the detect func (I add animation but you can't do it):

fileprivate func detectRotation() {
    if UIDevice.current.orientation == UIDeviceOrientation.landscapeLeft {
        print("landscape left")
        UIView.animate(withDuration: 0.3, delay: 0, options: .curveEaseOut, animations: {
            self.myButton.alpha = 1
            self.myButton.isEnabled = true
            self.view.layoutIfNeeded()
        }, completion: nil)
    } else if UIDevice.current.orientation == UIDeviceOrientation.landscapeRight {
        print("landscape right")
        UIView.animate(withDuration: 0.3, delay: 0, options: .curveEaseOut, animations: {
            self.myButton.alpha = 1
            self.myButton.isEnabled = true
            self.view.layoutIfNeeded()
        }, completion: nil)
    } else {
        print("porrait")
        UIView.animate(withDuration: 0.3, delay: 0, options: .curveEaseOut, animations: {
            self.myButton.alpha = 0
            self.myButton.isEnabled = false
            self.view.layoutIfNeeded()
        }, completion: nil)
    }

override viewWillTransition func and cal detectRotation func:

override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) {
    detectRotation()
}

This is the result:

portrait

Landscape

CodePudding user response：

You can use

yourMenuView.isHidden = UIDevice.current.orientation.isPortrait

like that

override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) {
    super.viewWillTransition(to: size, with: coordinator)
    yourMenuView.isHidden = UIDevice.current.orientation.isPortrait
}