iOS测量网页加载时间 [英] iOS measuring web page loading time

问题描述

我搜索了很多但是找不到用iOS测量网页加载时间的方法。
在应用程序中，我想显示某些页面加载时间..是否可以使用iOS sdk或第三方sdk？

I searched a lot but couldn't find the way to measure web page loading time with iOS. In the app, I want to show certain page loading time.. Is it possible with iOS sdk or third party sdk?

谢谢

推荐答案

您可以加载URL请求并使用NSDate查看花了多长时间...让我们假设您使用UIWebView来显示您的页面测量加载时间我将捕获请求URL的时间，然后在委托方法中 - （void）webViewDidFinishLoad：（UIWebView *）webView再次捕获时间并获取差异，例如

You can load a URL request and use NSDate to see how long it took...lets assume you use a UIWebView to show your page so to measure the loading time i would capture the time when the URL is requested and then in the delegate methods - (void)webViewDidFinishLoad:(UIWebView *)webView capture the time again and take the difference, for example

//lets say this is where you load the request and you already have your webview set up with a delegate

    -(void)loadRequest
    {
       [webView loadRequest:yourRequest];


       startDate=[NSDate date]
}
//this is the delegate call back for UIWebView
- (void)webViewDidFinishLoad:(UIWebView *)webView
{
   NSDate *endDate=[NSDate date];
   double ellapsedSeconds= [endDate timeIntervalSinceDate:startDate];
}

如果你想在没有UIWebView的情况下这样做，你可以使用NSURLRequest / NSURLConnection ...你可以做以下事情（我会同步做你也可以做异步）

If you want to do this without the UIWebView you can just use NSURLRequest/NSURLConnection... you can do the following (I will do it synchrnosly you can also do it async)

    NSDate *start=[NSDate date];
    NSURLRequest *r= [[ [NSURLRequest alloc] initWithURL:url] autorelease]; 
    NSData *response=   [NSURLConnection sendSynchronousRequest:r returningResponse:nil error:nil];
   NSDate *end=[NSDate date];
 double ellapsedSeconds= [start timeIntervalSinceDate:end];

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