In my app I have 4 ViewController and in two of them I am changing the status bar from white to black like this:

```
override func viewWillAppear(animated: Bool) {
        super.viewWillAppear(animated)

        UIApplication.sharedApplication().statusBarStyle = UIStatusBarStyle.Default
    }

    override func viewWillDisappear(animated: Bool) {
        super.viewWillDisappear(animated)

        UIApplication.sharedApplication().statusBarStyle = .LightContent
    }

```

The problem is if I switch between two ViewController that both have the code above the status bar will first change to black which is right, but then it changes to white again when entering the other ViewController.

How can I keep the status bar white on certain ViewController's ?