Create navigation bar with title and subtitle

Solution:

You can easily set the title and subtitle using the below method.Just call the below method to set the subtitle to the navigationBar.

    func setsubTitle(titleStr: String, subStr: String,viewControl:UIViewController) {

        let rect = CGRect(x: 0, y: 0, width: UIScreen.main.bounds.width, height: 50)

        let titleSize: CGFloat = 20

        let subtitleSize: CGFloat = 15

        let titleLabel = UILabel(frame: rect)

        titleLabel.backgroundColor = .clear

        titleLabel.numberOfLines = 2

        titleLabel.textColor = .white

        let text = NSMutableAttributedString()

        text.append(NSAttributedString(string: titleStr, attributes: [.font : UIFont.boldSystemFont(ofSize: titleSize)]))

        text.append(NSAttributedString(string: "\n\(subStr)", attributes: [.font : UIFont.systemFont(ofSize: subtitleSize)]))

        titleLabel.attributedText = text

        viewControl.navigationItem.titleView = titleLabel

    }