Javascript 在ios中将图像从文档目录注入html_Javascript_Html_Ios_Uiwebview

Javascript 在ios中将图像从文档目录注入html

javascript html ios

Javascript 在ios中将图像从文档目录注入html,javascript,html,ios,uiwebview,Javascript,Html,Ios,Uiwebview,我有一个html页面。其中我必须使用文档目录url加载图像。下面是html和javascript <html> <head> <script type="text/javascript"> function fetchObjDetails(scanImageLeftURL, scanImageRightURL) { /* left image */ var leftImg = new Image;

我有一个html页面。其中我必须使用文档目录url加载图像。下面是html和javascript

<html>
 <head>
  <script type="text/javascript">
    function fetchObjDetails(scanImageLeftURL, scanImageRightURL)
    {
        /* left image */
        var leftImg = new Image;
        leftImg.onload = function() {
        document.getElementById('left_foot').src = this.src;
        }   
        leftImg.src = scanImageLeftURL;

        /* right image */
        var rightImg = new Image;
        rightImg.onload = function() {
        document.getElementById('right_foot').src = this.src;
        }   
        rightImg.src = scanImageRightURL;
    }
    </script>
 </head>

 <body>
    <div class="container padall">
      <img alt="Left Foot" id="left_foot" src="" width="30%" />
      <img alt="Right Foot" id="right_foot" src="" width="30%" />
    </div>
</body>
</html>

但是我在html端没有得到任何图像。有人能告诉我这是否是正确的过程吗？

刚刚检查了您的代码似乎正常工作，我将图像路径替换为在internet上找到的一个，是的，我在WebView中看到了两个图像，您肯定不应该硬编码到“documetns”目录的路径，看看这个或者谷歌如何以正确的方式来做，所以我想如果你想加载本地图片->html元素的src应该从file://path_to_file@Injectios:我硬编码了有文档记录的目录url以便于理解。@Injectios:但是如何在webview完成加载后编辑html并插入图像？

-(void)viewDidLoad
{
    [super viewDidLoad];

    NSString *fullURL = @"some live url";
    NSURL *url = [NSURL URLWithString:fullURL];
    NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
    webFormView.delegate=self;
    [webFormView loadRequest:requestObj];
}

    -(void)webViewDidFinishLoad:(UIWebView *)webView
    {
        NSString *leftImgURL = @"/var/mobile/Containers/Data/Application/95736371-EA3D-475D-942D-835A037F8795/Documents/LeftImage_1454405366000.jpg";

        NSString *rightImgURL = @"/var/mobile/Containers/Data/Application/95736371-EA3D-475D-942D-835A037F8795/Documents/RightImage_1454405366000.jpg";

        NSString *script = [NSString stringWithFormat:@"fetchObjDetails('%@','%@')", leftImgURL, rightImgURL];

        [webView stringByEvaluatingJavaScriptFromString:script];
    }