I would like to create a custom WKWebView class, because I want to set a custom HTTP header. But I get this error:
Overriding method with selector 'loadRequest:' has incompatible type '(NSURLRequest) -> WKNavigation?'
import WebKit
class CustomWkWebView: WKWebView {
override func loadRequest(request: NSURLRequest) -> WKNavigation? {
var mutable_request = request.mutableCopy() as! NSMutableURLRequest
mutable_request.setValue("SHOTWORKS_IOS_APPLICATION", forKey: "App-MyParameter")
return super.loadRequest(mutable_request.copy() as! NSURLRequest)
}
}
It is written in the class of 'wkwebview' in this way
@availability(iOS, introduced=8.0)
class WKWebView : UIView {
/*! @abstract A copy of the configuration with which the web view was
initialized. */
@NSCopying var configuration: WKWebViewConfiguration { get }
/*! @abstract The web view's navigation delegate. */
weak var navigationDelegate: WKNavigationDelegate?
/*! @abstract The web view's user interface delegate. */
weak var UIDelegate: WKUIDelegate?
/*! @abstract The web view's back-forward list. */
var backForwardList: WKBackForwardList { get }
/*! @abstract Returns a web view initialized with a specified frame and
configuration.
@param frame The frame for the new web view.
@param configuration The configuration for the new web view.
@result An initialized web view, or nil if the object could not be
initialized.
@discussion This is a designated initializer. You can use
@link -initWithFrame: @/link to initialize an instance with the default
configuration. The initializer copies the specified configuration, so
mutating the configuration after invoking the initializer has no effect
on the web view.
*/
init(frame: CGRect, configuration: WKWebViewConfiguration)
/*! @abstract Navigates to a requested URL.
@param request The request specifying the URL to which to navigate.
@result A new navigation for the given request.
*/
func loadRequest(request: NSURLRequest) -> WKNavigation?
/*! @abstract Sets the webpage contents and base URL.
@param string The string to use as the contents of the webpage.
@param baseURL A URL that is used to resolve relative URLs within the document.
@result A new navigation.
*/
func loadHTMLString(string: String, baseURL: NSURL?) -> WKNavigation?
/*! @abstract Navigates to an item from the back-forward list and sets it
as the current item.
@param item The item to which to navigate. Must be one of the items in the
web view's back-forward list.
@result A new navigation to the requested item, or nil if it is already
the current item or is not part of the web view's back-forward list.
@seealso backForwardList
*/
func goToBackForwardListItem(item: WKBackForwardListItem) -> WKNavigation?
/*! @abstract The page title.
@discussion @link WKWebView @/link is key-value observing (KVO) compliant
for this property.
*/
var title: String? { get }
/*! @abstract The active URL.
@discussion This is the URL that should be reflected in the user
interface.
@link WKWebView @/link is key-value observing (KVO) compliant for this
property.
*/
@NSCopying var URL: NSURL? { get }
/*! @abstract A Boolean value indicating whether the view is currently
loading content.
@discussion @link WKWebView @/link is key-value observing (KVO) compliant
for this property.
*/
var loading: Bool { get }
/*! @abstract An estimate of what fraction of the current navigation has been completed.
@discussion This value ranges from 0.0 to 1.0 based on the total number of
bytes expected to be received, including the main document and all of its
potential subresources. After a navigation completes, the value remains at 1.0
until a new navigation starts, at which point it is reset to 0.0.
@link WKWebView @/link is key-value observing (KVO) compliant for this
property.
*/
var estimatedProgress: Double { get }
/*! @abstract A Boolean value indicating whether all resources on the page
have been loaded over securely encrypted connections.
@discussion @link WKWebView @/link is key-value observing (KVO) compliant
for this property.
*/
var hasOnlySecureContent: Bool { get }
/*! @abstract A Boolean value indicating whether there is a back item in
the back-forward list that can be navigated to.
@discussion @link WKWebView @/link is key-value observing (KVO) compliant
for this property.
@seealso backForwardList.
*/
var canGoBack: Bool { get }
/*! @abstract A Boolean value indicating whether there is a forward item in
the back-forward list that can be navigated to.
@discussion @link WKWebView @/link is key-value observing (KVO) compliant
for this property.
@seealso backForwardList.
*/
var canGoForward: Bool { get }
/*! @abstract Navigates to the back item in the back-forward list.
@result A new navigation to the requested item, or nil if there is no back
item in the back-forward list.
*/
func goBack() -> WKNavigation?
/*! @abstract Navigates to the forward item in the back-forward list.
@result A new navigation to the requested item, or nil if there is no
forward item in the back-forward list.
*/
func goForward() -> WKNavigation?
/*! @abstract Reloads the current page.
@result A new navigation representing the reload.
*/
func reload() -> WKNavigation?
/*! @abstract Reloads the current page, performing end-to-end revalidation
using cache-validating conditionals if possible.
@result A new navigation representing the reload.
*/
func reloadFromOrigin() -> WKNavigation?
/*! @abstract Stops loading all resources on the current page.
*/
func stopLoading()
/* @abstract Evaluates the given JavaScript string.
@param javaScriptString The JavaScript string to evaluate.
@param completionHandler A block to invoke when script evaluation completes or fails.
@discussion The completionHandler is passed the result of the script evaluation or an error.
*/
func evaluateJavaScript(javaScriptString: String, completionHandler: ((AnyObject!, NSError!) -> Void)?)
/*! @abstract A Boolean value indicating whether horizontal swipe gestures
will trigger back-forward list navigations.
@discussion The default value is NO.
*/
var allowsBackForwardNavigationGestures: Bool
/*! @abstract The scroll view associated with the web view.
*/
var scrollView: UIScrollView { get }
}
How to write method is same with my code.
I have only written it by suggestion.
I don't know why i couldn't override.
What should I do?
Following capture is this error.
