ios webview自适应高度及关闭回弹效果

/////////////////////////////初始化,self.view是父控件/////////////////////////////////
  _webView = [[UIWebView alloc] initWithFrame: CGRectMake(0, 0, self.view.frame.size.width, 0)];
  _webView.delegate = self;
  _webView.scrollView.bounces = NO;
  _webView.scrollView.showsHorizontalScrollIndicator = NO;
  _webView.scrollView.scrollEnabled = NO;
  [_webView sizeToFit];

  ///////////////////////////////设置内容,这里包装一层div,用来获取内容实际高度(像素),htmlcontent是html格式的字符串//////////////	
  NSString * htmlcontent = [NSString stringWithFormat:@"
"webview_content_wrapper\">%@
"
, htmlcontent]; [_webView loadHTMLString:htmlcontent baseURL:nil]; ////////////////////////////////delegate的方法重载//////////////////////////////////////////// - (void)webViewDidFinishLoad:(UIWebView *)webView { //获取页面高度(像素) NSString * clientheight_str = [webView stringByEvaluatingJavaScriptFromString: @"document.body.offsetHeight"]; float clientheight = [clientheight_str floatValue]; //设置到WebView上 webView.frame = CGRectMake(0, 0, self.view.frame.size.width, clientheight); //获取WebView最佳尺寸(点) CGSize frame = [webView sizeThatFits:webView.frame.size]; //获取内容实际高度(像素) NSString * height_str= [webView stringByEvaluatingJavaScriptFromString: @"document.getElementById('webview_content_wrapper').offsetHeight + parseInt(window.getComputedStyle(document.getElementsByTagName('body')[0]).getPropertyValue('margin-top')) + parseInt(window.getComputedStyle(document.getElementsByTagName('body')[0]).getPropertyValue('margin-bottom'))"]; float height = [height_str floatValue]; //内容实际高度(像素)* 点和像素的比 height = height * frame.height / clientheight; //再次设置WebView高度(点) webView.frame = CGRectMake(0, 0, self.view.frame.size.width, height); } 关闭webview回弹效果代码  [(UIScrollView *)[[_webView subviews] objectAtIndex:0] setBounces:NO];

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