如何根据其内容调整WebView的大小？ [英] How to resize WebView according to its content?

问题描述

我想在网页视图中设置简单的html内容，然后根据其内容调整大小。

I want to set simple html contents within a web view and then resize it according to its content.

要在网页视图中设置简单的html内容，它工作正常：

To set simple html contents within web view I used this code and it is working fine:

[[myWebView mainFrame] loadHTMLString:webViewContents baseURL:baseURLFramed];

现在，如果内容超过其实际大小，水平卷轴。我想设置一些默认宽度，并根据其内容管理高度，以使水平和垂直卷轴都不会出现。

Right now, if content is more than its actual size then it appears in web view showing both vertical and horizontal scroller in it. I want to set some default width and manage height according to its content in a way so that neither horizontal nor vertical scroller appears.

任何人都可以给我一些解决方案？

Can anyone suggest me some solution for it?

感谢，

Miraaj

推荐答案

您可以注册为 WebView 的框架加载代理，当页面加载时，您可以询问主框架的文档视图的大小，调整 WebView 的大小。确保您关闭了框架上的滚动条，否则会出现问题。

You can register as the WebView's frame load delegate, and when the page loads you can ask the main frame's document view for its size and resize the WebView. Make sure you turn off scrollbars on the frame or you will have problems.

请注意，某些网页可能非常大，当我测试daringfireball.net它进来17612点高，这显然太大而不能在屏幕上显示。

Be aware that certain pages can be very large, when I tested daringfireball.net it came in at 17612 points high, which is obviously too large to display on-screen.

- (void)applicationDidFinishLaunching:(NSNotification *)aNotification 
{
    //set ourselves as the frame load delegate so we know when the window loads
    [webView setFrameLoadDelegate:self];

    //turn off scrollbars in the frame
    [[[webView mainFrame] frameView] setAllowsScrolling:NO];

    //load the page
    NSURLRequest* request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://daringfireball.net"]];
    [[webView mainFrame] loadRequest:request];
}

//called when the frame finishes loading
- (void)webView:(WebView *)sender didFinishLoadForFrame:(WebFrame *)webFrame
{
    if([webFrame isEqual:[webView mainFrame]])
    {
        //get the rect for the rendered frame
        NSRect webFrameRect = [[[webFrame frameView] documentView] frame];
        //get the rect of the current webview
        NSRect webViewRect = [webView frame];

        //calculate the new frame
        NSRect newWebViewRect = NSMakeRect(webViewRect.origin.x, 
                                           webViewRect.origin.y - (NSHeight(webFrameRect) - NSHeight(webViewRect)), 
                                           NSWidth(webViewRect), 
                                           NSHeight(webFrameRect));
        //set the frame
        [webView setFrame:newWebViewRect];

        //NSLog(@"The dimensions of the page are: %@",NSStringFromRect(webFrameRect));
    }
}

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