UITableViewCell上面添加UIWebView

首先创建一个webView对象和

    private var webviewheight:CGFloat? =
    private var webViewcell : UIWebView?

在viewDidLoad里面设置创建webViewcell，设置属性并用kvo监听webViewcell中scrollView的size的变化

self.webViewcell = UIWebView(frame: CGRectMake(16, 0, UIScreen.mainScreen().bounds.size.width - 32, 1))
self.webViewcell?.delegate = self
self.webViewcell?.userInteractionEnabled = false
self.webViewcell?.scalesPageToFit = true
self.webViewcell?.scrollView.addObserver(self, forKeyPath: "contentSize", options: NSKeyValueObservingOptions.New, context: nil)

在tableview的数据源中把webViewCell添加到cell上面

 func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
        let cell = tableview.dequeueReusableCellWithIdentifier("FindDetailHuoDongNeiRongTableViewCell") as? FindDetailHuoDongNeiRongTableViewCell
        cell?.selectionStyle = UITableViewCellSelectionStyle.None
        if self.webViewcell != nil{
            cell?.contentView.addSubview(self.webViewcell!)
        }
        return cell!
    }

把监听到的高纪录一下，设置webviewcell的frame

    override func observeValueForKeyPath(keyPath: String?, ofObject object: AnyObject?, change: [String : AnyObject]?, context: UnsafeMutablePointer<Void>) {

       if keyPath == "contentSize"{

        if self.webviewheight != object!.contentSize.height{
                self.webviewheight  = object!.contentSize.height
                self.webViewcell?.frame = CGRectMake(16, 40, UIScreen.mainScreen().bounds.size.width - 32, webviewheight!)
                dispatch_async(dispatch_get_main_queue(), { () -> Void in
                    self.tableview.reloadData()
                })
            }
        }

    }

移除监听

    deinit{
        webViewcell?.scrollView.removeObserver(self, forKeyPath: "contentSize")
    }