1.WKWebView
从 iOS 8 开始呢，就可以用 WKWebView 了，好处有很多，坑呢也不少。这些网上文章也多，这里就不介绍这些东西了。接下来进入我们这个文章的主题
@protocol WKNavigationDelegate <NSObject>
@optional
/*! @abstract Decides whether to allow or cancel a navigation.
@param webView The web view invoking the delegate method.
@param navigationAction Descriptive information about the action
triggering the navigation request.
@param decisionHandler The decision handler to call to allow or cancel the
navigation. The argument is one of the constants of the enumerated type WKNavigationActionPolicy.
@discussion If you do not implement this method, the web view will load the request or, if appropriate, forward it to another application.
*/
- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler;
/*! @abstract Decides whether to allow or cancel a navigation.
@param webView The web view invoking the delegate method.
@param navigationAction Descriptive information about the action
triggering the navigation request.
@param preferences The default set of webpage preferences. This may be
changed by setting defaultWebpagePreferences on WKWebViewConfiguration.
@param decisionHandler The policy decision handler to call to allow or cancel
the navigation. The arguments are one of the constants of the enumerated type
WKNavigationActionPolicy, as well as an instance of WKWebpagePreferences.
@discussion If you implement this method,
-webView:decidePolicyForNavigationAction:decisionHandler: will not be called.
*/
- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction preferences:(WKWebpagePreferences *)preferences decisionHandler:(void (^)(WKNavigationActionPolicy, WKWebpagePreferences *))decisionHandler API_AVAILABLE(macos(10.15), ios(13.0));
/*! @abstract Decides whether to allow or cancel a navigation after its
response is known.
@param webView The web view invoking the delegate method.
@param navigationResponse Descriptive information about the navigation
response.
@param decisionHandler The decision handler to call to allow or cancel the
navigation. The argument is one of the constants of the enumerated type WKNavigationResponsePolicy.
@discussion If you do not implement this method, the web view will allow the response, if the web view can show it.
*/
- (void)webView:(WKWebView *)webView decidePolicyForNavigationResponse:(WKNavigationResponse *)navigationResponse decisionHandler:(void (^)(WKNavigationResponsePolicy))decisionHandler;
/*! @abstract Invoked when a main frame navigation starts.
@param webView The web view invoking the delegate method.
@param navigation The navigation.
*/
- (void)webView:(WKWebView *)webView didStartProvisionalNavigation:(null_unspecified WKNavigation *)navigation;
/*! @abstract Invoked when a server redirect is received for the main
frame.
@param webView The web view invoking the delegate method.
@param navigation The navigation.
*/
- (void)webView:(WKWebView *)webView didReceiveServerRedirectForProvisionalNavigation:(null_unspecified WKNavigation *)navigation;
/*! @abstract Invoked when an error occurs while starting to load data for
the main frame.
@param webView The web view invoking the delegate method.
@param navigation The navigation.
@param error The error that occurred.
*/
- (void)webView:(WKWebView *)webView didFailProvisionalNavigation:(null_unspecified WKNavigation *)navigation withError:(NSError *)error;
/*! @abstract Invoked when content starts arriving for the main frame.
@param webView The web view invoking the delegate method.
@param navigation The navigation.
*/
- (void)webView:(WKWebView *)webView didCommitNavigation:(null_unspecified WKNavigation *)navigation;
/*! @abstract Invoked when a main frame navigation completes.
@param webView The web view invoking the delegate method.
@param navigation The navigation.
*/
- (void)webView:(WKWebView *)webView didFinishNavigation:(null_unspecified WKNavigation *)navigation;
/*! @abstract Invoked when an error occurs during a committed main frame
navigation.
@param webView The web view invoking the delegate method.
@param navigation The navigation.
@param error The error that occurred.
*/
- (void)webView:(WKWebView *)webView didFailNavigation:(null_unspecified WKNavigation *)navigation withError:(NSError *)error;
/*! @abstract Invoked when the web view needs to respond to an authentication challenge.
@param webView The web view that received the authentication challenge.
@param challenge The authentication challenge.
@param completionHandler The completion handler you must invoke to respond to the challenge. The
disposition argument is one of the constants of the enumerated type
NSURLSessionAuthChallengeDisposition. When disposition is NSURLSessionAuthChallengeUseCredential,
the credential argument is the credential to use, or nil to indicate continuing without a
credential.
@discussion If you do not implement this method, the web view will respond to the authentication challenge with the NSURLSessionAuthChallengeRejectProtectionSpace disposition.
*/
- (void)webView:(WKWebView *)webView didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition disposition, NSURLCredential * _Nullable credential))completionHandler;
/*! @abstract Invoked when the web view's web content process is terminated.
@param webView The web view whose underlying web content process was terminated.
*/
- (void)webViewWebContentProcessDidTerminate:(WKWebView *)webView API_AVAILABLE(macos(10.11), ios(9.0));
@protocol WKUIDelegate <NSObject>
@optional
/*! @abstract Creates a new web view.
@param webView The web view invoking the delegate method.
@param configuration The configuration to use when creating the new web
view. This configuration is a copy of webView.configuration.
@param navigationAction The navigation action causing the new web view to
be created.
@param windowFeatures Window features requested by the webpage.
@result A new web view or nil.
@discussion The web view returned must be created with the specified configuration. WebKit will load the request in the returned web view.
If you do not implement this method, the web view will cancel the navigation.
*/
- (nullable WKWebView *)webView:(WKWebView *)webView createWebViewWithConfiguration:(WKWebViewConfiguration *)configuration forNavigationAction:(WKNavigationAction *)navigationAction windowFeatures:(WKWindowFeatures *)windowFeatures;
/*! @abstract Notifies your app that the DOM window object's close() method completed successfully.
@param webView The web view invoking the delegate method.
@discussion Your app should remove the web view from the view hierarchy and update
the UI as needed, such as by closing the containing browser tab or window.
*/
- (void)webViewDidClose:(WKWebView *)webView API_AVAILABLE(macos(10.11), ios(9.0));
/*! @abstract Displays a JavaScript alert panel.
@param webView The web view invoking the delegate method.
@param message The message to display.
@param frame Information about the frame whose JavaScript initiated this
call.
@param completionHandler The completion handler to call after the alert
panel has been dismissed.
@discussion For user security, your app should call attention to the fact
that a specific website controls the content in this panel. A simple forumla
for identifying the controlling website is frame.request.URL.host.
The panel should have a single OK button.
If you do not implement this method, the web view will behave as if the user selected the OK button.
*/
- (void)webView:(WKWebView *)webView runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(void))completionHandler;
/*! @abstract Displays a JavaScript confirm panel.
@param webView The web view invoking the delegate method.
@param message The message to display.
@param frame Information about the frame whose JavaScript initiated this call.
@param completionHandler The completion handler to call after the confirm
panel has been dismissed. Pass YES if the user chose OK, NO if the user
chose Cancel.
@discussion For user security, your app should call attention to the fact
that a specific website controls the content in this panel. A simple forumla
for identifying the controlling website is frame.request.URL.host.
The panel should have two buttons, such as OK and Cancel.
If you do not implement this method, the web view will behave as if the user selected the Cancel button.
*/
- (void)webView:(WKWebView *)webView runJavaScriptConfirmPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(BOOL result))completionHandler;
/*! @abstract Displays a JavaScript text input panel.
@param webView The web view invoking the delegate method.
@param prompt The prompt to display.
@param defaultText The initial text to display in the text entry field.
@param frame Information about the frame whose JavaScript initiated this call.
@param completionHandler The completion handler to call after the text
input panel has been dismissed. Pass the entered text if the user chose
OK, otherwise nil.
@discussion For user security, your app should call attention to the fact
that a specific website controls the content in this panel. A simple forumla
for identifying the controlling website is frame.request.URL.host.
The panel should have two buttons, such as OK and Cancel, and a field in
which to enter text.
If you do not implement this method, the web view will behave as if the user selected the Cancel button.
*/
- (void)webView:(WKWebView *)webView runJavaScriptTextInputPanelWithPrompt:(NSString *)prompt defaultText:(nullable NSString *)defaultText initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(NSString * _Nullable result))completionHandler;
#if TARGET_OS_IPHONE
/*! @abstract Allows your app to determine whether or not the given element should show a preview.
@param webView The web view invoking the delegate method.
@param elementInfo The elementInfo for the element the user has started touching.
@discussion To disable previews entirely for the given element, return NO. Returning NO will prevent
webView:previewingViewControllerForElement:defaultActions: and webView:commitPreviewingViewController:
from being invoked.
This method will only be invoked for elements that have default preview in WebKit, which is
limited to links. In the future, it could be invoked for additional elements.
*/
- (BOOL)webView:(WKWebView *)webView shouldPreviewElement:(WKPreviewElementInfo *)elementInfo API_DEPRECATED_WITH_REPLACEMENT("webView:contextMenuConfigurationForElement:completionHandler:", ios(10.0, 13.0));
/*! @abstract Allows your app to provide a custom view controller to show when the given element is peeked.
@param webView The web view invoking the delegate method.
@param elementInfo The elementInfo for the element the user is peeking.
@param defaultActions An array of the actions that WebKit would use as previewActionItems for this element by
default. These actions would be used if allowsLinkPreview is YES but these delegate methods have not been
implemented, or if this delegate method returns nil.
@discussion Returning a view controller will result in that view controller being displayed as a peek preview.
To use the defaultActions, your app is responsible for returning whichever of those actions it wants in your
view controller's implementation of -previewActionItems.
Returning nil will result in WebKit's default preview behavior. webView:commitPreviewingViewController: will only be invoked
if a non-nil view controller was returned.
*/
- (nullable UIViewController *)webView:(WKWebView *)webView previewingViewControllerForElement:(WKPreviewElementInfo *)elementInfo defaultActions:(NSArray<id <WKPreviewActionItem>> *)previewActions API_DEPRECATED_WITH_REPLACEMENT("webView:contextMenuConfigurationForElement:completionHandler:", ios(10.0, 13.0));
/*! @abstract Allows your app to pop to the view controller it created.
@param webView The web view invoking the delegate method.
@param previewingViewController The view controller that is being popped.
*/
- (void)webView:(WKWebView *)webView commitPreviewingViewController:(UIViewController *)previewingViewController API_DEPRECATED_WITH_REPLACEMENT("webView:contextMenuForElement:willCommitWithAnimator:", ios(10.0, 13.0));
#endif // TARGET_OS_IPHONE
#if TARGET_OS_IOS
/**
* @abstract Called when a context menu interaction begins.
*
* @param webView The web view invoking the delegate method.
* @param elementInfo The elementInfo for the element the user is touching.
* @param completionHandler A completion handler to call once a it has been decided whether or not to show a context menu.
* Pass a valid UIContextMenuConfiguration to show a context menu, or pass nil to not show a context menu.
*/
- (void)webView:(WKWebView *)webView contextMenuConfigurationForElement:(WKContextMenuElementInfo *)elementInfo completionHandler:(void (^)(UIContextMenuConfiguration * _Nullable configuration))completionHandler API_AVAILABLE(ios(13.0));
/**
* @abstract Called when the context menu will be presented.
*
* @param webView The web view invoking the delegate method.
* @param elementInfo The elementInfo for the element the user is touching.
*/
- (void)webView:(WKWebView *)webView contextMenuWillPresentForElement:(WKContextMenuElementInfo *)elementInfo API_AVAILABLE(ios(13.0));
/**
* @abstract Called when the context menu configured by the UIContextMenuConfiguration from
* webView:contextMenuConfigurationForElement:completionHandler: is committed. That is, when
* the user has selected the view provided in the UIContextMenuContentPreviewProvider.
*
* @param webView The web view invoking the delegate method.
* @param elementInfo The elementInfo for the element the user is touching.
* @param animator The animator to use for the commit animation.
*/
- (void)webView:(WKWebView *)webView contextMenuForElement:(WKContextMenuElementInfo *)elementInfo willCommitWithAnimator:(id <UIContextMenuInteractionCommitAnimating>)animator API_AVAILABLE(ios(13.0));
/**
* @abstract Called when the context menu ends, either by being dismissed or when a menu action is taken.
*
* @param webView The web view invoking the delegate method.
* @param elementInfo The elementInfo for the element the user is touching.
*/
- (void)webView:(WKWebView *)webView contextMenuDidEndForElement:(WKContextMenuElementInfo *)elementInfo API_AVAILABLE(ios(13.0));
#endif // TARGET_OS_IOS
#if !TARGET_OS_IPHONE
/*! @abstract Displays a file upload panel.
@param webView The web view invoking the delegate method.
@param parameters Parameters describing the file upload control.
@param frame Information about the frame whose file upload control initiated this call.
@param completionHandler The completion handler to call after open panel has been dismissed. Pass the selected URLs if the user chose OK, otherwise nil.
If you do not implement this method, the web view will behave as if the user selected the Cancel button.
*/
- (void)webView:(WKWebView *)webView runOpenPanelWithParameters:(WKOpenPanelParameters *)parameters initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(NSArray<NSURL *> * _Nullable URLs))completionHandler API_AVAILABLE(macos(10.12));
#endif
H5调用原生方法
1.UIWebview加载的URL
-(void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler{
//获取url里的相关参数(就是把URL里?后面的玩意儿取出来)
//如下：
//http://127.0.0.1:8080/index.html?message=ocuiwebviewurl拦截&flag=yjkwap://wjj.com&action=helloOC'
//这个玩意儿获取到的 dict = {@"message":@"ocuiwebviewurl拦截", @"flag":@"yjkwap://wjj.com", @"action":@"helloOC"}
NSDictionary *dict = [YJKTool urlPramaDictionaryWithUrlString:request.URL.absoluteString];
//存在约定的规则就进行拦截（这里约定的规则就是flag=yjkwap://wjj.com）
if ([[dict valueForKey:@"flag"] isEqualToString:@"yjkwap://wjj.com"]) {
//执行相关的动作（action代表要执行的动作，就是要调用原生的啥方法）
if ([[dict valueForKey:@"action"] isEqualToString:@"helloOC"]) {
// message 就是H5给我们传递过来的参数
//在这里搞事情
// ... 此处省略十来行代码 ...
// 最后要阻止页面的加载
decisionHandler(WKNavigationActionPolicyCancel);
}
}
decisionHandler(WKNavigationActionPolicyAllow);
}
2、WKScriptMessageHandler。
//弄一个 WKWebViewConfiguration 对象
WKWebViewConfiguration *configuration = [[WKWebViewConfiguration alloc] init];
//然后 configuration.userContentController 对象初始化一下哦
configuration.userContentController = [[WKUserContentController alloc] init];
//添加 helloOC 方法给H5小伙伴调用哦
[configuration.userContentController addScriptMessageHandler:self name:@"helloOC"];
//下面就是创建 WKWebView 对象的相关代码，没啥好看的哦
self.wkWebView = [[WKWebView alloc] initWithFrame:self.view.bounds configuration:configuration];
self.wkWebView.navigationDelegate = self;
[self.wkWebView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://192.168.2.50:8080/index.html"]]];
[self.view addSubview:self.wkWebView];
helloOC 方法的具体实现使用下面的代理就好啦
- (void)userContentController:(WKUserContentController *)userContentController didReceiveScriptMessage:(WKScriptMessage *)message{
// message.name 获取到对应的方法名
if ([message.name isEqualToString:@"helloOC"]) {
// message.body H5传过来的参数，具体啥类型要看H5所传参数是啥类型哦
NSDictionary *dict = message.body;
}
}
2.UIWebview
H5调用原生方法
1.UIWebview加载的URL
相信iOS的小伙伴应该都知道Delegate这个玩意儿，在UIWebview中就存在UIWebViewDelegate这个玩意儿，拦截URL就是通过代理中的一个方法实现的。
API_UNAVAILABLE(tvos) @protocol UIWebViewDelegate <NSObject>
@optional
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType API_DEPRECATED("No longer supported.", ios(2.0, 12.0));
- (void)webViewDidStartLoad:(UIWebView *)webView API_DEPRECATED("No longer supported.", ios(2.0, 12.0));
- (void)webViewDidFinishLoad:(UIWebView *)webView API_DEPRECATED("No longer supported.", ios(2.0, 12.0));
- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error API_DEPRECATED("No longer supported.", ios(2.0, 12.0));
@end
1、注入JS。
//注入JS
NSString *html = [self.web stringByEvaluatingJavaScriptFromString:@"document.documentElement.innerHTML"];
2、JSContext。
// context 这个玩意儿还记得么？就是在页面加载完成时，通过
//JSContext *context = [webView valueForKeyPath:@"documentView.webView.mainFrame.javaScriptContext"];
//代码获取到的
[self.context evaluateScript:@"changeString('haahhahah')"];
3、iOS同行小伙伴封装的WebViewJavascriptBridge库。
//调用H5 helloJS 方法，参数为nil
[self.bridge callHandler:@"helloJS" data:nil responseCallback:^(id responseData) {
//等待H5的回调然后做事情
NSLog(@"%@",responseData);
}];
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