在iOS中计算PDF内容的高度 [英] Calculate PDF content height in iOS

问题描述

我必须在UIWebView上呈现PDF文件，但是由于我正在使用UITableView，所以我无法计算PDF的实际高度，因此我需要设置具有UIWebView的像元高度. /p>

我可以使用以下代码来计算HTML内容.

    CGRect frame = newsWebView.frame;
    frame.size.height = 1;
    frame.size.height = newsWebView.scrollView.contentSize.height;  // Get the corresponding height from the webView's embedded scrollView.
    webViewHeight =frame.size.height ;

有什么方法可以计算PDF内容吗?

解决方案

您可以尝试设置setToToit属性，然后在webViewDidFinishLoad中再次设置UIWebView的框架

- (void)webViewDidFinishLoad:(UIWebView *)webView{
       [detailsWebView sizeToFit];
       [detailsWebView setFrame:CGRectMake(detailsWebView.frame.origin.x, detailsWebView.frame.origin.y, 300.0, detailsWebView.frame.size.height)];

}

在这里您可以使用此方法根据PDF内容来调整Webview的高度，然后再调整单元格的大小

I have to render PDF file on a UIWebView, but i am unable to calculate the actual height of the PDF, since i am using UITableView so i need to set the cell height which has UIWebView.

I am able to calculate the HTML content using below code.

    CGRect frame = newsWebView.frame;
    frame.size.height = 1;
    frame.size.height = newsWebView.scrollView.contentSize.height;  // Get the corresponding height from the webView's embedded scrollView.
    webViewHeight =frame.size.height ;

Is there any ways to calculate PDF content hieght??

解决方案

you can Try this set sizeToFit property and again set Frame of UIWebView in webViewDidFinishLoad

- (void)webViewDidFinishLoad:(UIWebView *)webView{
       [detailsWebView sizeToFit];
       [detailsWebView setFrame:CGRectMake(detailsWebView.frame.origin.x, detailsWebView.frame.origin.y, 300.0, detailsWebView.frame.size.height)];

}

here you can resize webview height according to your PDF content in this method and subsequently resize cell

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