Adding a UILabel to a UIToolbar

Question

I\'m trying to add a label to my toolbar. Button works great, however when I add the label object, it crashes. Any ideas?

UIBarButtonItem *setDateRangeButton         


        

Answer 1

Details

• Xcode 10.2.1 (10E1001), Swift 5

Full sample

import UIKit

class ViewController: UIViewController {

    private weak var toolBar: UIToolbar?

    override func viewDidLoad() {
        super.viewDidLoad()

        var bounds =  UIScreen.main.bounds
        let bottomBarWithHeight = CGFloat(44)
        bounds.origin.y = bounds.height - bottomBarWithHeight
        bounds.size.height = bottomBarWithHeight
        let toolBar = UIToolbar(frame: bounds)
        view.addSubview(toolBar)

        var buttons = [UIBarButtonItem]()
        buttons.append(UIBarButtonItem(barButtonSystemItem: .add, target: self, action: #selector(ViewController.action)))
        buttons.append(UIBarButtonItem(barButtonSystemItem: .camera, target: self, action: #selector(ViewController.action)))
        buttons.append(UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: nil, action: nil))
        buttons.append(UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: nil, action: nil))
        buttons.append(ToolBarTitleItem(text: "\(NSDate())", font: .systemFont(ofSize: 12), color: .lightGray))
        buttons.append(UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: nil, action: nil))
        buttons.append(UIBarButtonItem(barButtonSystemItem: .cancel, target: self, action:  #selector(ViewController.action)))
        toolBar.items = buttons

        self.toolBar = toolBar
    }
    @objc func action() { print("action") }
}

class ToolBarTitleItem: UIBarButtonItem {

    init(text: String, font: UIFont, color: UIColor) {
        let label =  UILabel(frame: UIScreen.main.bounds)
        label.text = text
        label.sizeToFit()
        label.font = font
        label.textColor = color
        label.textAlignment = .center
        super.init()
        customView = label
    }
    required init?(coder aDecoder: NSCoder) { super.init(coder: aDecoder) }
}

Result

Answer 2

If you want to adding a view up the toolbar view you can try this:

[self.navigationController.tabBarController.view addSubview:yourView];