Clearing Uiwebview's Cache in Swift

Clearing UIWebView's Cache in Swift

You can use

NSURLCache.sharedURLCache().removeAllCachedResponses()
NSURLCache.sharedURLCache().diskCapacity = 0
NSURLCache.sharedURLCache().memoryCapacity = 0

Swift 3.0

URLCache.shared.removeAllCachedResponses()
URLCache.shared.diskCapacity = 0
URLCache.shared.memoryCapacity = 0

You can also change the cache policy of the NSURLRequest

let day_url = NSURL(string: "http://www.domain.com")
let day_url_request = NSURLRequest(URL: day_url,
    cachePolicy: NSURLRequestCachePolicy.ReloadIgnoringLocalAndRemoteCacheData,
    timeoutInterval: 10.0)

let day_webView = UIWebView()
day_webView.loadRequest(day_url_request)

Swift 3.0

let day_url = URL(string: "http://www.domain.com")
let day_url_request = URLRequest(url: day_url!,
    cachePolicy:NSURLRequest.CachePolicy.reloadIgnoringLocalAndRemoteCacheData,
    timeoutInterval: 10.0)

let day_webView = UIWebView()
day_webView.loadRequest(day_url_request)

For more information on cache policies : https://developer.apple.com/library/mac/documentation/Cocoa/Reference/Foundation/Classes/NSURLRequest_Class/index.html#//apple_ref/c/tdef/NSURLRequestCachePolicy

Clearing UIWebview cache

I actually think it may retain cached information when you close out the UIWebView. I've tried removing a UIWebView from my UIViewController, releasing it, then creating a new one. The new one remembered exactly where I was at when I went back to an address without having to reload everything (it remembered my previous UIWebView was logged in).

So a couple of suggestions:

[[NSURLCache sharedURLCache] removeCachedResponseForRequest:NSURLRequest];

This would remove a cached response for a specific request. There is also a call that will remove all cached responses for all requests ran on the UIWebView:

[[NSURLCache sharedURLCache] removeAllCachedResponses];

After that, you can try deleting any associated cookies with the UIWebView:

for(NSHTTPCookie *cookie in [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookies]) {

    if([[cookie domain] isEqualToString:someNSStringUrlDomain]) {

        [[NSHTTPCookieStorage sharedHTTPCookieStorage] deleteCookie:cookie];
    }
}

Swift 3:

// Remove all cache 
URLCache.shared.removeAllCachedResponses()

// Delete any associated cookies     
if let cookies = HTTPCookieStorage.shared.cookies {
    for cookie in cookies {
        HTTPCookieStorage.shared.deleteCookie(cookie)
    }
}

How to clear cache on UIWebView in swift?

You can easily do it with ;

NSURLCache.sharedURLCache().removeAllCachedResponses()
NSURLCache.sharedURLCache().diskCapacity = 0
NSURLCache.sharedURLCache().memoryCapacity = 0

Also use like this;

let url = NSURL(string: "http://www.web.com")
let url_request = NSURLRequest(URL: url,
    cachePolicy: NSURLRequestCachePolicy.ReloadIgnoringLocalAndRemoteCacheData,
    timeoutInterval: 5.0)

let webView = UIWebView()
webView.loadRequest(url_request)

Thanks

Clear Cache in a web view Swift 3.3

This is working in Swift 3.1 , XCode 8.3.1 :

//Delete Cookies
        if let cookies = HTTPCookieStorage.shared.cookies {
            for cookie in cookies {
                NSLog("\(cookie)")
            }
        }

        let storage = HTTPCookieStorage.shared
        for cookie in storage.cookies! {
            storage.deleteCookie(cookie)
        }

Swift Clear webview cache on app termination

I got this working, but only when the app is terminated with VC with UIWebView being displayed.

override func viewDidLoad() { 
NotificationCenter.default.addObserver(self, selector: #selector(applicationWillTerminate), name: NSNotification.Name.UIApplicationWillTerminate, object: nil)
}

func applicationWillTerminate() {
    clearBtnPressed(Any.self)
}

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