iOS|UITableViewCell嵌套UIWebView

获取UIWebView高度

- (void)webViewDidFinishLoad:(UIWebView *)webView { // 如果要获取webView高度必须在网页加载完成之后获取 // 方法一 CGFloat height = [self.webView sizeThatFits:CGSizeZero].height; // 方法二 CGFloat height = webView.scrollView.contentSize.height; // 方法三 (不推荐使用,当webView.scalesPageToFit = YES计算的高度不准确) CGFloat height = [[self.webView stringByEvaluatingJavaScriptFromString:@"document.body.offsetHeight"] floatValue]; }

UIWebView加载完成后cell高度的更新,使用通知来实现。 【iOS|UITableViewCell嵌套UIWebView】TableViewCell.m
- (void)webViewDidFinishLoad:(UIWebView *)webView { CGSize fittingSize = [self.webView sizeThatFits:CGSizeZero]; self.height = fittingSize.height; self.webView.frame = CGRectMake(0, 0, fittingSize.width, fittingSize.height); // 用通知发送加载完成后的高度 [[NSNotificationCenter defaultCenter] postNotificationName:@"WEBVIEW_HEIGHT" object:self userInfo:nil]; }

ViewController.m
- (void)viewDidLoad { [super viewDidLoad]; // 用于缓存cell高度 self.heightDic = [[NSMutableDictionary alloc] init]; // 注册加载完成高度的通知 [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(noti:) name:@"WEBVIEW_HEIGHT" object:nil]; }- (void)noti:(NSNotification *)sender { TableViewCell *cell = [sender object]; if (![self.heightDic objectForKey:[NSString stringWithFormat:@"%ld",cell.tag]]||[[self.heightDic objectForKey:[NSString stringWithFormat:@"%ld",cell.tag]] floatValue] != cell.height) { [self.heightDic setObject:[NSNumber numberWithFloat:cell.height] forKey:[NSString stringWithFormat:@"%ld",cell.tag]]; [self.tableView reloadRowsAtIndexPaths:@[[NSIndexPath indexPathForRow:cell.tag inSection:0]] withRowAnimation:UITableViewRowAnimationNone]; } }

iOS|UITableViewCell嵌套UIWebView
文章图片

完整项目工程
参考
http://www.jianshu.com/p/e199496a8b8a
http://blog.zlcode.com/2016/04/28/ios-webview-cell/

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