Change navigation bar color in QLPreviewController

Question

I want to change navigation bar color of QLPreviewController in swift 3. I have used below code to change color but its not working

viewQLPreview = QLPreviewController()
viewQLPreview.dataSource = self
viewQLPreview.delegate = self
viewQLPreview.navigationController?.navigationBar.isTranslucent = false
viewQLPreview.navigationController?.navigationBar.tintColor = UIColor.red

Answer 1

I have used below code to Change navigation bar color of QLPreviewController in swift 3.0

UINavigationBar.appearance().barTintColor = UIColor.red

UINavigationBar.appearance(whenContainedInInstancesOf: [QLPreviewController.self]).backgroundColor = UIColor.red