如何获得正确的UIWebView内容高度？ [英] how to get proper UIWebView content height?

问题描述

我在View中添加了UIWebView，在ScrollView中添加了该视图。

I am add UIWebView in View and That view in ScrollView.

我想获得UIWebView内容的框架。那么我可以设置框架来查看和滚动查看吗？

I want to get frame of the UIWebView Content. So can I set the frame to view and scrollview?

我知道我们可以通过使用javascript获得高度。如下所述：

I know we can get the height by using javascript. As mention below:

float height = [[webView stringByEvaluatingJavaScriptFromString:@"document.body.offsetHeight;"] floatValue];

但是当我旋转视图并重新计算 didRotateFromInterfaceOrientation ::（UIInterfaceOrientation）fromInterfaceOrientation 方法，然后内容高度增加。

But when I am rotating the view and recalculate the height of the UIWebView content in didRotateFromInterfaceOrientation::(UIInterfaceOrientation)fromInterfaceOrientation method, then content height was increased.

所以请建议我如何才能获得适当的高度我正在轮换方向？

So please suggest me how can I get the proper height when i am rotate the orientation?

谢谢。

推荐答案

采用这个方法：

- (void) webViewDidFinishLoad:(UIWebView *)webView{
    CGRect frame = wvContent.frame;
    CGSize fittingSize = [wvContent sizeThatFits:CGSizeZero];
    frame.size = fittingSize;
    wvContent.frame = frame;
}

然后每次设备旋转时调用此方法：

Then call this method everytime device rotating:

- (void) reloadContent
{
    CGRect frame = wvContent.frame;
    frame.size.height = 1;
    frame.size.width = wvContent.frame.size.width; // you should change webview's width here.
    wvContent.frame = frame;

    [wvContent loadHTMLString:yourHTML baseURL:nil]; // reload webview
}

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