UIWebView is (still) useful for showing web-based documents — such as help or FAQs — in your app. If the document background color and app's background color don't match and aren't white, you might sometimes see the the
UIWebView's white background color appear for a split second the first time a document is loaded.
You can't fix this by setting
UIWebView's background color, because it is ignored. Here's an easy way to fix this:
webview.isOpaque to false and make sure the
UIViewController instance holding the UIWebView has the correct background color.