How to change background color of statusBar?

Question

iOS

How to change background color of statusBar? I tried through the view, it does not work

let statusBarView: UIView = UIView(frame: CGRectMake(0.0, 0.0, UIScreen.mainScreen().bounds.width, 20.0))
        statusBarView.backgroundColor = UIColor.yellowColor()
        view.addSubview(statusBarView)