LaunchImage persistent - iphone

Question

Using Xcode 7 I wanna to create a small application with a UIWebView.
This app will have to run it from all devices.
I'm using "New iOS Launch Image" in Assets.
But when the "Launch" terminate there is a waiting time (which varies from connection speed ) before that WebView is loaded .
In this time I would like to "Launch Screen" that continue to persist using the Image for the type of device .
Can you help me?

Answer 1

You cannot increase the time of splash screen as recommended by apple but you can do something which will make the user feel like splash screen is still there.
You can achieve it in this way:
I am assuming that the first screen load after your splash screen is your WebView screen. Add UIImageView on your WebView in interface builder and set splash screen image on your ImageView. Now make IBOutlet for this imageView and set it hidden property as yes when webview intimates you that its loaded in its delegate methods. Don't forget to set the delegate of your UIWebView in interface Builder.
class WebViewController: UIViewController, UIWebViewDelegate {
#IBOutlet var UIImageView: imgThumbSplash!
override func viewDidLoad() {
super.viewDidLoad()
imgThumbSplash.hidden = false
}
func webViewDidFinishLoad(webView: UIWebView){
imgThumbSplash.hidden = true
}
func webView(webView: UIWebView, didFailLoadWithError error: NSError?){
imgThumbSplash.hidden = true
}
}

Answer 2

I solved it with this code:
extension UIImage {
convenience init?(fullscreenNamed name: String) {
switch UIScreen.mainScreen().bounds.size.height {
case 480: //iPhone 4/4s
self.init(named: "\(name)-700#2x.png")
case 568: //iPhone 5/5s
self.init(named: "\(name)-700-568h#2x.png")
case 667: //iPhone 6/6s
self.init(named: "\(name)-800-667h#2x.png")
case 736: //iPhone 6+/6s+
self.init(named: "\(name)-800-Portrait-736h#3x.png")
default:
self.init(named: name)
}
}
}
I take in "LaunchImage" the right image for the device screen in use.