webview内容适应

来源：互联网发布：java xml与json互转编辑：程序博客网时间：2024/06/05 11:05
解决方法：方法1可以得到内容的实际高度，方法2得到了将内容显示完整后的 webView 的尺寸（包含 UIEdgeInsets）- (void)webViewDidFinishLoad:(UIWebView *)wb{    //方法1    CGFloat documentWidth = [[wb stringByEvaluatingJavaScriptFromString:@"document.getElementById('content').offsetWidth"] floatValue];    CGFloat documentHeight = [[wb stringByEvaluatingJavaScriptFromString:@"document.getElementById(\"content\").offsetHeight;"] floatValue];    NSLog(@"documentSize = {%f, %f}", documentWidth, documentHeight);    //方法2    CGRect frame = wb.frame;    frame.size.width = 768;    frame.size.height = 1;//    wb.scrollView.scrollEnabled = NO;    wb.frame = frame;    frame.size.height = wb.scrollView.contentSize.height;    NSLog(@"frame = %@", [NSValue valueWithCGRect:frame]);    wb.frame = frame;}//其他几种方案//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);}//2.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;}//方法3.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;}//方法4.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}}}}
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