如何查找UIWebView的最后一次加载(Ready State 4)

Question

我有一个问题的didFinishLoad方法UIWebView是继续射击.我想尝试一下estimatedProgress 解决方案,但不幸的是我不知道在哪里找到这些框架.我正在运行Mountain Lion并使用最新版本的XCode.此外,对于多次触发的UIWebView,这是最好的方法还是有新的方法.似乎有关于SO 的javascript 答案,但这对我不起作用.这可追溯到2009年,我听说苹果公司拒绝任何使用私有API的应用程序.请帮帮我吧!

谢谢大家!

Answer 1

跟踪未完成请求的数量怎么样？我编写了一些似乎有效的测试代码：

@interface WebViewDelegate : NSObject<UIWebViewDelegate>
@property ( nonatomic ) NSUInteger numberOfRunningRequests ;
@end

@implementation WebViewDelegate

-(void)webViewDidStartLoad:(UIWebView *)webView
{
    self.numberOfRunningRequests = self.numberOfRunningRequests + 1 ;
}

-(void)webViewDidFinishLoad:(UIWebView *)webView
{
    self.numberOfRunningRequests = self.numberOfRunningRequests - 1 ;
    if ( self.numberOfRunningRequests == 0 )
    {
        NSLog(@"done!\n") ;
    }
}

@end

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    // Override point for customization after application launch.
    self.window.backgroundColor = [UIColor whiteColor];
    [self.window makeKeyAndVisible];

    UIWebView * webView = [[ UIWebView alloc ] initWithFrame:self.window.bounds ] ;
    static WebViewDelegate * delegate = nil ;
    delegate = [[ WebViewDelegate alloc ] init ] ;
    webView.delegate = delegate ;

    [self.window addSubview:webView ] ;
    NSURLRequest * request = [ NSURLRequest requestWithURL:[ NSURL URLWithString:@"http://stackoverflow.com"] ];
    [ webView loadRequest:request ] ;
    return YES;
}

@end

（创建一个 Xcode 示例项目并用它替换您的 AppDelegate.m）