首先来看下UIWebView的做法:
//---------------viewDidload里面---------------
UIWebView *webView = [[UIWebViewalloc]initWithFrame:CGRectMake(0,0,WIDTH,0)];
webView.delegate =self;
[self.viewaddSubview:webView];
[webView loadHTMLString:html/*html内容*/ baseURL:nil];
//---------------代理方法---------------
-(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:
//---------------viewDidload里面---------------
WKWebView *wkWebview = [[WKWebView alloc] initWithFrame:CGRectMake(0, 0, WIDTH, 0)];
wkWebview.navigationDelegate = self;
[self.view wkWebview];
[wkWebview loadHTMLString:html/*html内容*/ baseURL:nil];
//---------------代理方法---------------
- (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
}
}
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