How to add the UISegmentedControl in UINavigationBar?

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遥遥无期
遥遥无期 2021-02-04 03:44

I have tried to add the UISegmentedControl to the bottom of UINavigationBar with title. But i cannot add it and I cannot add UISegmentedControl

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6条回答
  • 2021-02-04 04:26

    To put it in the navigationBar has a right left and title view for such things... accessed using....

    self.navigationItem.titleView = mySegmentedControl

    for future reference....

    self.navigationItem.rightBarButtonItem
    self.navigationItem.leftBarButtonItems // for adding an Array of items
    

    To add it below the navigation view but have it static.. add it to the viewController.view... Are you using a UITableViewController? If so maybe switch to a UIViewController and add a tableView then your toolbarview as subviews to that self.view.

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  • 2021-02-04 04:26

    you can custom navigationItem's titleView, like this:

    self.navigationItem.titleView = segmentview
    

    you should not add subview to the navigationbar, for after push or pop UIViewcontroller ,the subview is still exsit on the navigationbar.

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  • 2021-02-04 04:33

    This is how I do it in Objective C (sorry, I haven't learned Swift yet):

    - (void)viewDidLoad
    {
        [super viewDidLoad];
    
        self.viewControllers = [self segmentViewControllers];
    
        self.segmentedControl = [[UISegmentedControl alloc] initWithItems: [self.segmentedControl addTarget: self
                              action: @selector(segmentClicked:)
                    forControlEvents: UIControlEventValueChanged];
    
        CGFloat topOffset = self.navigationController.navigationBar.frame.size.height + [UIApplication sharedApplication].statusBarFrame.size.height;
    
        self.toolbar = [[UIToolbar alloc] initWithFrame: CGRectMake(0, topOffset, self.navigationController.navigationBar.frame.size.width, kDefaultViewHeight)];
        self.toolbar.delegate = self;
    
        self.navigationController.navigationBar.backgroundColor = [UIColor whiteColor];
        self.toolbar.backgroundColor = [UIColor whiteColor];
        self.toolbar.clipsToBounds = YES;
    
        UIBarButtonItem *segmentedControlItem = [[UIBarButtonItem alloc] initWithCustomView: self.segmentedControl];
        UIBarButtonItem *flexibleItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem: UIBarButtonSystemItemFlexibleSpace
                                                                                  target: nil
                                                                                  action: nil];
    
        [self.toolbar setItems: @[flexibleItem, segmentedControlItem, flexibleItem] animated: YES];
    
        [self.navigationController.view addSubview: self.toolbar];
    
        self.segmentedControl.selectedSegmentIndex = 0;
    }
    

    And in UITableViewController (one of the segmentViewControllers):

      self.tableView.contentInset = UIEdgeInsetsMake(topOffset, 0, 0, 0);
    
        CGRect currentFrame = self.tableView.frame;
        [self.tableView setFrame: CGRectMake(currentFrame.origin.x,
                                         currentFrame.origin.y,
                                         currentFrame.size.width,
                                         currentFrame.size.height + [UIApplication sharedApplication].statusBarFrame.size.height)];
    
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  • 2021-02-04 04:34

    To add segment control in UINavigationBar in Swift 5

        let segment: UISegmentedControl = UISegmentedControl(items: ["First", "Second"])
        segment.sizeToFit()
        if #available(iOS 13.0, *) {
            segment.selectedSegmentTintColor = UIColor.red
        } else {
           segment.tintColor = UIColor.red
        }
        segment.selectedSegmentIndex = 0
        segment.setTitleTextAttributes([NSAttributedString.Key.font : UIFont(name: "ProximaNova-Light", size: 15)!], for: .normal)
        self.navigationItem.titleView = segment
    
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  • 2021-02-04 04:35

    I think you are looking for this.

    let searchVC = self.storyboard?.instantiateViewController(withIdentifier:"idofcontroller")
    let searchController = UISearchController(searchResultsController: searchVC)
    searchController.searchResultsUpdater = self
    searchController.obscuresBackgroundDuringPresentation = false
    searchController.searchBar.placeholder = "Search"
    navigationItem.searchController = searchController
    definesPresentationContext = true
    
    searchController.searchBar.scopeButtonTitles = ["News", "Photos", "Videos"]
    searchController.searchBar.delegate = self
    

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  • 2021-02-04 04:41

    You can also add the segment control to a search bar, not the navigation item. If you're like me, I needed a large title + search bar + navigation item, which would be impossible with the current top answer.

    @Abhishek 's answer is close. You would do something like the following:

    // Create the search controller
    let searchController = UISearchController(searchResultsController: nil)
    searchController.searchResultsUpdater = self
    searchController.obscuresBackgroundDuringPresentation = false
    searchController.searchBar.scopeButtonTitles = ["Option 1", "Option 2"]
    
    // Make sure the scope bar is always showing, even when not actively searching
    searchController.searchBar.showsScopeBar = true
    
    // Make sure the search bar is showing, even when scrolling
    navigationItem.hidesSearchBarWhenScrolling = false
    
    // Add the search controller to the nav item   
    navigationItem.searchController = searchController
    definesPresentationContext = true
    

    @Gurjit Singh, the line with .showsScopeBar = true is the solution to your problem.

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