Clearing UIWebView's Cache in Swift

Question

I have a UIWebView inside my app. This UIWebView needs to be reloaded fully (i.e. clear all cache of images/HTML/cookies etc.) every time when viewDidLoad.

Answer 1

Swift 4:

final class WebCacheCleaner {

    class func clear() {
        URLCache.shared.removeAllCachedResponses()

        HTTPCookieStorage.shared.removeCookies(since: Date.distantPast)
        print("[WebCacheCleaner] All cookies deleted")

        WKWebsiteDataStore.default().fetchDataRecords(ofTypes: WKWebsiteDataStore.allWebsiteDataTypes()) { records in
            records.forEach { record in
                WKWebsiteDataStore.default().removeData(ofTypes: record.dataTypes, for: [record], completionHandler: {})
                print("[WebCacheCleaner] Record \(record) deleted")
            }
        }
    }

}

// Usage
WebCacheCleaner.clear()

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Older Versions:

NSURLCache.sharedURLCache().removeAllCachedResponses()
if let cookies = NSHTTPCookieStorage.sharedHTTPCookieStorage().cookies {
    for cookie in cookies {
        NSHTTPCookieStorage.sharedHTTPCookieStorage().deleteCookie(cookie)
    }
}