我的应用程序中有一个UIWebView。每次viewDidLoad
时,都需要完全重新加载此UIWebView(即清除所有图像/ HTML / cookie缓存等)。
那么我可以在Swift中执行任何代码吗?
这是我的代码:
let myUrl = NSURL(string: "http://www.example.com")
let myRequest = NSURLRequest(URL: myUrl!)
myWebView.loadRequest(myRequest)
谢谢!
答案 0 :(得分:26)
您可以使用
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
您还可以更改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)
答案 1 :(得分:10)
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")
}
}
UserDefaults.standard.synchronize()
}
}
// Usage
WebCacheCleaner.clear()
旧版本:
NSURLCache.sharedURLCache().removeAllCachedResponses()
if let cookies = NSHTTPCookieStorage.sharedHTTPCookieStorage().cookies {
for cookie in cookies {
NSHTTPCookieStorage.sharedHTTPCookieStorage().deleteCookie(cookie)
}
}
答案 2 :(得分:9)
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)
}
}
答案 3 :(得分:2)
Swift 4
func clear(cache: Bool, cookies: Bool) {
if cache { clearCache() }
if cookies { clearCookies() }
}
fileprivate func clearCache() {
URLCache.shared.removeAllCachedResponses()
URLCache.shared.diskCapacity = 0
URLCache.shared.memoryCapacity = 0
}
fileprivate func clearCookies() {
let cookieStorage = HTTPCookieStorage.shared
guard let cookies = cookieStorage.cookies else { return }
for cookie in cookies {
cookieStorage.deleteCookie(cookie)
}
}
如果期望的结果是拥有隐私浏览体验,您可能还希望在websiteDataStore
对象上设置WKWebViewConfiguration
属性,如下所示。
let configuration = WKWebViewConfiguration()
configuration.websiteDataStore = WKWebsiteDataStore.nonPersistent()
...
答案 4 :(得分:0)
它确实有效
func clean() {
HTTPCookieStorage.shared.removeCookies(since: Date.distantPast)
WKWebsiteDataStore.default().fetchDataRecords(ofTypes: WKWebsiteDataStore.allWebsiteDataTypes()) { records in
records.forEach { record in
WKWebsiteDataStore.default().removeData(ofTypes: record.dataTypes, for: [record], completionHandler: {})
}
}
}