如何动态更改webView的高度？ [英] How to change the height of webView dynamically?

问题描述

我目前正在使用webView来显示新闻，在我打算放置一些按钮的新闻下面。所以我需要获得webView的高度，以便在下载后根据webView的高度更改按钮的位置。换句话说，如何动态更改webView的高度？

I'm currently using webView to display news,below the news I intend to put some buttons.so I need to get the height of webView so as to change the position of buttons according to the height of webView after all are downloaded.in other words,how to change the height of webView dynamically?

推荐答案

试试这个

    - (void)webViewDidFinishLoad:(UIWebView *)webView
    {
        NSString *string = [_webView stringByEvaluatingJavaScriptFromString:@"document.getElementById(\"body\").offsetHeight;"];
        CGFloat height = [string floatValue] + 8;
        CGRect frame = [_webView frame];
        frame.size.height = height;
        [_webView setFrame:frame];

        if ([[self delegate] respondsToSelector:@selector(webViewController:webViewDidResize:)])
        {
            [[self delegate] webViewController:self webViewDidResize:frame.size];
        }
    }

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