How to prevent initial white flash when showing a UIWebView?

Question

I use a `UIWebView` to show an "About" screen by displaying a bundled HTML file. My app's view hierarchy is: `UITabBarController` / `UIViewController` / `UIWebView`. The problem is that the HTML page has a dark background, and the very first time the tab is tapped, a white background is visible briefly before the web view is displayed. I tried setting the background color of the `UIWebView`, but that doesn't solve the problem. The problem occurs whether I load the content in `viewDidLoad` or `viewWillAppear`.

Accepted Answer

Swift:

```
webView.isOpaque = false
webView.backgroundColor = UIColor.clear
```

Objective-C:

```
webView.opaque = NO;
webView.backgroundColor = [UIColor clearColor];
```

How to prevent initial white flash when showing a UIWebView?

Solution

Problem