在开发iOS版的直播卖货系统源码过程中，如何在html上展示商品详情，下面小编将从WKWebView入手，来介绍下实现过程。
1、创建WKWebview

- (WKWebView *)webView{
    if (!_webView) {
        _webView = [[WKWebView alloc] initWithFrame:CGRectMake(0, 0, _window_width, _backScrollView.height)];
        _webView.navigationDelegate = self;
        _webView.opaque = NO;
        _webView.multipleTouchEnabled = YES;
        _webView.scrollView.delegate = self;
        _webView.scrollView.bounces = NO;
        _webView.scrollView.showsVerticalScrollIndicator = NO;
        _webView.scrollView.scrollEnabled = NO;
        _webView.scrollView.panGestureRecognizer.enabled = NO;
    }
    return _webView;
}

2、获取服务端返回的html的字符串

        NSString *description = minstr([storeInfo valueForKey:@“description"]);
//我这里更改一下html的格式，让其符合手机端展示，如果服务端返回的就是手机端展示的样式，这就可以不用更改 直接用就可以了
            NSString * htmlStyle = @" <style type=\"text/css\"> *{min-width: 0% !important;max-width: 100% !important;} table{ width: 100% !important;} img{ height: auto !important;}  </style> ";
            description = [htmlStyle stringByAppendingString:description];
            NSString *aaa = @"<meta content=\"width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0\" name=\"viewport\">";
            description = [aaa stringByAppendingString:description];
           [_webView loadHTMLString:description baseURL:nil];

3、在WKWebView加载完成的代理方法中更改webView的frame

- (void)webView:(WKWebView *)webView didFinishNavigation:(null_unspecified WKNavigation *)navigation{
    [webView evaluateJavaScript:@"document.body.scrollHeight" completionHandler:^(id _Nullable result, NSError * _Nullable error) {
//更改webview的frame
        _webView.frame = CGRectMake(0, _goodListView.bottom, _window_width, [result doubleValue]);//将WKWebView的高度设置为内容高度
        //更改背景scrollview的滑动范围
        _backScrollView.contentSize = CGSizeMake(0, _webView.bottom);
    }];
    
    //    插入js代码，对图片进行点击操作
    [webView evaluateJavaScript:@"function assignImageClickAction(){var imgs=document.getElementsByTagName('img');var length=imgs.length;for(var i=0; i < length;i++){img=imgs[i];if(\"ad\" ==img.getAttribute(\"flag\")){var parent = this.parentNode;if(parent.nodeName.toLowerCase() != \"a\")return;}img.οnclick=function(){window.location.href='image-preview:'+this.src}}}" completionHandler:^(id object, NSError *error) {
        
    }];
    [webView evaluateJavaScript:@"assignImageClickAction();" completionHandler:^(id object, NSError *error) {
        
    }];
    imageArray = [self getImgs:description];


}
#pragma mark -- 获取文章中的图片个数
- (NSMutableArray *)getImgs:(NSString *)string
{
   
    NSMutableArray *arrImgURL = [[NSMutableArray alloc] init];
    NSArray *array = [string componentsSeparatedByString:@"<img"];
    NSInteger count = [array count] - 1;


    for (int i = 0; i < count; i++) {
        NSString *jsString = [NSString stringWithFormat:@"document.getElementsByTagName('img')[%d].src", i];
        [_webView evaluateJavaScript:jsString completionHandler:^(NSString *str, NSError *error) {
            
            if (error ==nil) {
                [arrImgURL addObject:str];
            }
       
        }];
    }
    imageArray = [NSMutableArray arrayWithArray:arrImgURL];
    
    
    return arrImgURL;
}

4、在WKWebView的代理方法中拦截图片添加的点击方法，可使用HZPhotoBrowser来展示图片

- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler{
    
    NSURLRequest *request = navigationAction.request;
    if ([request.URL.scheme isEqualToString: @"image-preview"])
    {
        
        NSString *url = [request.URL.absoluteString substringFromIndex:14];
        
        
        //启动图片浏览器， 跳转到图片浏览页面
        if (imageArray.count != 0) {
            
            HZPhotoBrowser *browserVc = [[HZPhotoBrowser alloc] init];
            browserVc.imageArray = imageArray;
            browserVc.imageCount = imageArray.count; // 图片总数
            browserVc.currentImageIndex = (int)[imageArray indexOfObject:url];//当前点击的图片
            [browserVc show];
            
        }
        decisionHandler(WKNavigationActionPolicyAllow);
        return;
        
    }

    decisionHandler(WKNavigationActionPolicyAllow);
NSLog(@"在发送请求之前：%@",navigationAction.request.URL.absoluteString);

以上，就是在开发直播卖货系统源码时，利用WKWebView展示html格式的商品详情的过程。