UIWebView添加頭部視圖

環境：系統版本：OSX 10.10.2

Xcodel版本：7.1.1

模擬器：iPhone6   

功能：網頁滾動的時候，表頭也跟着滾動

1.首先創建webView的類，定義屬性

UIWebView *webView = [[UIWebView alloc]initWithFrame:CGRectMake(0, 0, 375, 667)];
        webView.scalesPageToFit = YES;
        NSURL *url = [NSURL URLWithString:@"https://m.yhouse.com/meal-app/774"];
        [webView loadRequest:[NSURLRequest requestWithURL:url]];
        [self.contentView addSubview:webView];

2.創建表頭視圖

UIView *myview = [[UIView alloc]initWithFrame:CGRectMake(0, -500, 375, 500)]; // 頭部視圖的y要給負值
        myview.backgroundColor = [UIColor magentaColor];
        <span style="background-color: rgb(255, 255, 153);">webView.scrollView.contentInset = UIEdgeInsetsMake(500, 0, 0, 0);// 設置內部偏移量</span>
        [webView.scrollView addSubview:myview];

關鍵需要設置網頁的內部偏移量

4.此外webView還有4個代理方法，可以在裏面處理點擊事件

- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType;
- (void)webViewDidStartLoad:(UIWebView *)webView;
- (void)webViewDidFinishLoad:(UIWebView *)webView;
- (void)webView:(UIWebView *)webView didFailLoadWithError:(nullable NSError *)error;