iOS WKWebView高度自适应以及截获页面点击的url

首先来看下UIWebView的做法:

UIWebView *webView = [[UIWebViewalloc]initWithFrame:CGRectMake(0,0,WIDTH,0)];

webView.delegate =self;

[self.viewaddSubview:webView];

[webView loadHTMLString:html/*html内容*/ baseURL:nil];

-(void)webViewDidFinishLoad:(UIWebView*) webView {

//获取页面高度，并重置webview的frame

CGFloat documentHeight = [[webViewstringByEvaluatingJavaScriptFromString:@"document.getElementById(\"content\").offsetHeight;"]floatValue];

CGRect frame = webView.frame;

frame.size.height = documentHeight;

webView.frame = frame;

}

- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest
*)request navigationType:(UIWebViewNavigationType)navigationType {

NSString* strRequest = request.URL.absoluteString;

if([strRequestisEqualToString:@"about:blank"]) {//主页面加载内容

returnYES;//允许跳转

} else {//截获页面里面的链接点击

//do something you want

returnNO;//不允许跳转

}

}

在来对应看下WKWebView:

WKWebView *wkWebview = [[WKWebView alloc] initWithFrame:CGRectMake(0, 0, WIDTH, 0)];

wkWebview.navigationDelegate = self;

[self.view wkWebview];

[wkWebview loadHTMLString:html/*html内容*/ baseURL:nil];

- (void)webView:(WKWebView *)webView didFinishNavigation:(null_unspecifiedWKNavigation
*)navigation {

[webView evaluateJavaScript:@"document.getElementById(\"content\").offsetHeight;"completionHandler:^(id_Nullable
result,NSError *_Nullable error) {

//获取页面高度，并重置webview的frame

CGFloat documentHeight = [resultdoubleValue];

CGRect frame = webView.frame;

frame.size.height = documentHeight;

webView.frame = frame;

}];

}

// 类似 UIWebView的 -webView: shouldStartLoadWithRequest: navigationType:

- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction
*)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler {

NSString *strRequest = [navigationAction.request.URL.absoluteStringstringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

if([strRequestisEqualToString:@"about:blank"]) {//主页面加载内容

decisionHandler(WKNavigationActionPolicyAllow);//允许跳转

} else {//截获页面里面的链接点击

//do something you want

decisionHandler(WKNavigationActionPolicyCancel);//不允许跳转

}

}

高度自适应代码下载链接：http://download.csdn.net/detail/luco2008/9502733