ios webview自适应实际内容高度4种方法 iOS

第一种方法

- (void)webViewDidFinishLoad:(UIWebView *)webView{ CGFloat webViewHeight=[webView.scrollView contentSize].height; CGRect newFrame = webView.frame; newFrame.size.height = webViewHeight; webView.frame = newFrame; _webTablewView.contentSize = CGSizeMake(320, newFrame.size.height + 64 + KWIDTH - 100); }

执行js语句直接获取html文档的dom高度

- (void)webViewDidFinishLoad:(UIWebView *)webView{ CGFloatwebViewHeight =[[webViewstringByEvaluatingJavaScriptFromString:@document.body.offsetHeight]floatValue]; // CGFloat webViewHeight= [[webViewstringByEvaluatingJavaScriptFromString:@document.body.scrollHeight]floatValue]; CGRectnewFrame = webView.frame; newFrame.size.height= webViewHeight; webView.frame= newFrame; }

先将UIWebView的高度设为最小，然后再使用sizeThatFits就会返回刚好合适的大小

-(void)webViewDidFinishLoad:(UIWebView*)webVie{ CGSize actualSize = [webView sizeThatFits:CGSizeZero]; CGRect newFrame = webView.frame; newFrame.size.height = actualSize.height; webView.frame = newFrame; }

遍历webview子视图获取UIWebDocumentView高度即实际高度

-(void)webViewDidFinishLoad:(UIWebView *)webView{ CGFloat webViewHeight = 0.0f; if([webView.subviews count] > 0) { UIView *scrollerView = webView.subviews[0]; if([scrollerView.subviews count] >0) { UIView *webDocView = scrollerView.subviews.lastObject; if ([webDocView isKindOfClass:[NSClassFromString(@UIWebDocumentView)class]]) { webViewHeight = webDocView.frame.size.height; //获取文档的高度 webView.frame=webDocView.frame; //更新UIWebView 的高度 } } } }