How to save dynamic webpage in cache using UIWebview in Swift 3

Question

I am developing an application(Swift 3 using UIWebview). I need to load webpages into webview and save some webpages into cache. If there is not internet user will able to see those pages. But I am confused on how to save whole webpage in cache. The main thing is we need to show pages back even if there is not internet.

I used the following documention : http://nshipster.com/nsurlcache/ and https://developer.apple.com/reference/foundation/urlcache

let url = NSURL(string: load_url1)
let request = NSURLRequest(url: url as! URL,cachePolicy: NSURLRequest.CachePolicy.returnCacheDataElseLoad, timeoutInterval: 60)
self.webView.loadRequest(request as URLRequest);

Has anyone implemented this before. Please provide some demo code as this is my first attempt on cache

see this http://stackoverflow.com/questions/1348696/how-to-cache-content-in-uiwebview-for-faster-loading-later-on — Anbu.Karthik, Feb 07 '17 at 13:04
@Anbu.Karthik i tried this one but pages not loaded in offline — S.Sathya Priya, Feb 07 '17 at 13:11
its loaded only for static pages. I am getting problem when rendering pages with help of JSON data — S.Sathya Priya, Feb 07 '17 at 14:00

score 8 · Answer 1 · answered Apr 23 '17 at 19:59

8

Just use

let url = URL(string: urlString)
var urlRequest = URLRequest(url: url!)
urlRequest.cachePolicy = .returnCacheDataElseLoad
webView.loadRequest(urlRequest)

answered Apr 23 '17 at 19:59

LNI

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Excellent. Working perfect. Thank you. – Hilaj S L Apr 09 '18 at 07:42
I am getting black screen – Akash Raghani Nov 20 '19 at 09:59
You can define the cachePolicy when initiating the URLRequest by doing something like **URLRequest(url: URL!, cachePolicy:.returnCacheDataElseLoad)** .This is helpful in inline calls in SwiftUI. – Sethu Senthil Jul 03 '22 at 03:34

How to save dynamic webpage in cache using UIWebview in Swift 3

1 Answers1