Hiding the tabbar and removing the space

Question

Is there a way to hide tabbar and remove that space left (around 50px) ?

I tried

self.tabBarController?.tabBar.hidden = true
self.extendedLayoutIncludesOpaqueBars = true

No luck. I see blank space.

Answer 1

For those that like to do everything programmatically, add this line to the init method of a ViewController that shouldn't have the tabBar:

hidesBottomBarWhenPushed = true

Answer 2

My preferred way to do that is using a wrapping controller. If I want to hide the tab bar, I just increase the height of the tab bar controller, thus effectively the tab bar is moved out of the screen.

With this solution you don't need to hack tab bar frame and you don't depend on navigation controller push animation:

import UIKit

class ViewController: UIViewController {
    let tabController: UITabBarController = {
        let tabController = UITabBarController()
        // setup your tabbar controller here

        return tabController;
    }()

    var tabbarHidden = false {
        didSet {
            var frame = self.view.bounds;

            if (tabbarHidden) {
                frame.size.height += self.tabController.tabBar.bounds.size.height;
            }

            self.tabController.view.frame = frame;
        }
    }

    override func viewDidLoad() {
        super.viewDidLoad()

        // add the tab controller as child controller
        addChildViewController(self.tabController)
        self.tabController.view.frame = self.view.bounds
        self.tabController.view.autoresizingMask = [.FlexibleWidth, .FlexibleHeight]
        self.view.addSubview(self.tabController.view)
        self.tabController.didMoveToParentViewController(self)

        // for debugging
        let tapRecognizer = UITapGestureRecognizer(target: self, action: #selector(switchTabbar))
        self.tabController.view.addGestureRecognizer(tapRecognizer)
    }

    override func childViewControllerForStatusBarStyle() -> UIViewController? {
        return self.tabController
    }

    override func childViewControllerForStatusBarHidden() -> UIViewController? {
        return self.tabController
    }

    func switchTabbar() {
        UIView.animateWithDuration(0.3) {
            self.tabbarHidden = !self.tabbarHidden
        }
    }
}

Answer 3

Swift 3:

extension UITabBarController {
    func setTabBarVisible(visible:Bool, duration: TimeInterval, animated:Bool) {
        if (tabBarIsVisible() == visible) { return }
        let frame = self.tabBar.frame
        let height = frame.size.height
        let offsetY = (visible ? -height : height)

        // animation
        UIViewPropertyAnimator(duration: duration, curve: .linear) {
            self.tabBar.frame.offsetBy(dx:0, dy:offsetY)
            self.view.frame = CGRect(x:0,y:0,width: self.view.frame.width, height: self.view.frame.height + offsetY)
            self.view.setNeedsDisplay()
            self.view.layoutIfNeeded()
        }.startAnimation()
    }

    func tabBarIsVisible() ->Bool {
        return self.tabBar.frame.origin.y < UIScreen.main.bounds.height
    }
}

To use (if for example self is a UITabBarController):

self.setTabBarVisible(visible: false, duration: 0.3, animated: true)

Swift 2.x:

extension UITabBarController {
    func setTabBarVisible(visible:Bool, duration: NSTimeInterval, animated:Bool) {
        if (tabBarIsVisible() == visible) { return }
        let frame = self.tabBar.frame
        let height = frame.size.height
        let offsetY = (visible ? -height : height)

        // animation
        UIView.animateWithDuration(animated ? duration : 0.0) {
            self.tabBar.frame = CGRectOffset(frame, 0, offsetY)
            self.view.frame = CGRectMake(0, 0, self.view.frame.width, self.view.frame.height + offsetY)
            self.view.setNeedsDisplay()
            self.view.layoutIfNeeded()
        }
    }

    func tabBarIsVisible() ->Bool {
        return self.tabBar.frame.origin.y < UIScreen.mainScreen().bounds.height
    }
}

To use:

self.tabBarController?.setTabBarVisible(visible: false, duration: 0.3, animated: true)

Answer 4

Programmatically, add this to the next view controller for swift 4.

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
    tabBarController?.tabBar.isHidden = true
    edgesForExtendedLayout = UIRectEdge.bottom
    extendedLayoutIncludesOpaqueBars = true
}

And add a background color

Answer 5

You can refer this link - iOS/Swift - Hide/Show UITabBarController when scrolling down/up. For better Result Do not forget to add this line of code in your viewdidLoad() for Black screen removal after hiding Tab bar.

if #available(iOS 11.0, *) {
        self.myScroll.contentInsetAdjustmentBehavior = .never
    }

Answer 6

For me in iOS 13 I had to display image in cell with full screen, I had collection view with trailing, leading, top, bottom constraint. I removed all constraint. set collection view frame to UIScreen.main.bounds. then return sizeForItemAt as collection frame size.