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
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()
Older Versions:
NSURLCache.sharedURLCache().removeAllCachedResponses()
if let cookies = NSHTTPCookieStorage.sharedHTTPCookieStorage().cookies {
for cookie in cookies {
NSHTTPCookieStorage.sharedHTTPCookieStorage().deleteCookie(cookie)
}
}
Swift 3.
URLCache.shared.removeAllCachedResponses()
URLCache.shared.diskCapacity = 0
URLCache.shared.memoryCapacity = 0
if let cookies = HTTPCookieStorage.shared.cookies {
for cookie in cookies {
HTTPCookieStorage.shared.deleteCookie(cookie)
}
}