博客> UITableViewCell嵌套UIWebView UITableViewCell嵌套UIWebView

1 獲取UIWebView高度

- (void)webViewDidFinishLoad:(UIWebView *)webView { // 若是要獲取webView高度必須在網頁加載完成以後獲取 // 方法一 CGFloat height = [self.webView sizeThatFits:CGSizeZero].height; // 方法二 CGFloat height = webView.scrollView.contentSize.height; // 方法三 （不推薦使用，當webView.scalesPageToFit = YES計算的高度不許確） CGFloat height = [[self.webView stringByEvaluatingJavaScriptFromString:@"document.body.offsetHeight"] floatValue]; }

2 UIWebView加載完成後cell高度的更新，使用通知來實現。

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); // 用通知發送加載完成後的高度 [[NSNotificationCenter defaultCenter] postNotificationName:@"WEBVIEW_HEIGHT" object:self userInfo:nil]; }

ViewController.m

- (void)viewDidLoad { [super viewDidLoad]; // 用於緩存cell高度 self.heightDic = [[NSMutableDictionary alloc] init]; // 註冊加載完成高度的通知 [[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]; } }