How to show image while page is loading in swift?

问题

I'm beginner in swift and Xcode and want to know how to make an image appears while page finish loading in UIWebView,like when you enter a new website,image start appear on screen in webview

回答1:

You can use any loader meanwhile the website loads, like MBProgressHUD or any other progress bar.

And if you are willing to show an custom image over a screen while loading then you can handle that in following delegate methods:

say you have take any custom image or View called loadingView

func webView(webView: UIWebView!, didFailLoadWithError error: NSError!) {
**loadingView**.viewWithTag(1)?.hidden = true 
print("Webview fail with error \(error)");
}

**func webView(webView: UIWebView!, shouldStartLoadWithRequest request: NSURLRequest!, navigationType: UIWebViewNavigationType) -> Bool {**
return true;
}

func webViewDidStartLoad(webView: UIWebView!) {
**loadingView**.viewWithTag(1)?.hidden = false 
print("Webview started Loading")
}

func webViewDidFinishLoad(webView: UIWebView!) {
**loadingView**.viewWithTag(1)?.hidden = true 
print("Webview did finish load")
}

Hope this will help you.

来源：https://stackoverflow.com/questions/32422382/how-to-show-image-while-page-is-loading-in-swift