ReplayKit.swift

import ReplayKit

class ViewController: UIViewController {

    @IBOutlet weak var mainView: UIView!
    
    var broadcastPicker: RPSystemBroadcastPickerView?
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        DispatchTimer(timeInterval: 1) { [weak self] timer in
            self?.mainView.backgroundColor = self?.randomColor()
        }
        
        broadcastPicker = RPSystemBroadcastPickerView(frame: CGRect.init(x: 20, y: 20, width: 50, height: 50))
        view.addSubview(broadcastPicker!)
    }
}