How to hide share button in QLPreviewController using swift?

Question

I\'m using the below code to use QLPreviewcontroller to show some documents in my app,

let ql = QLPreviewController()
ql.dataSource = self
//ql.navigationIte         


        

Answer 1

1. Create a subclass of QLPreviewController

2. Add the following code to it

Swift:

var toolbars: [UIView] = []

var observations : [NSKeyValueObservation] = []

    override func viewDidLoad() {
        super.viewDidLoad()

        navigationItem.setRightBarButton(UIBarButtonItem(), animated: false)

    }

    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)

        navigationController?.toolbar.isHidden = true

        if let navigationToobar = navigationController?.toolbar {
            let observation = navigationToobar.observe(\.isHidden) {[weak self] (changedToolBar, change) in

                if self?.navigationController?.toolbar.isHidden == false {
                     self?.navigationController?.toolbar.isHidden = true
                }
            }
            observations.append(observation)
        }

        toolbars = toolbarsInSubviews(forView: view)

        for toolbar in toolbars {

            toolbar.isHidden = true

            let observation = toolbar.observe(\.isHidden) { (changedToolBar, change) in
                if let isHidden = change.newValue,
                    isHidden == false {
                    changedToolBar.isHidden = true
                }
            }

            observations.append(observation)
        }
    }

    private func toolbarsInSubviews(forView view: UIView) -> [UIView] {

        var toolbars: [UIView] = []

        for subview in view.subviews {
            if subview is UIToolbar {
                toolbars.append(subview)
            }
            toolbars.append(contentsOf: toolbarsInSubviews(forView: subview))
        }
        return toolbars
    }