iOS 5中的新错误：WebKit放弃了未捕获的异常 [英] New error in iOS 5: WebKit discarded an uncaught exception

问题描述

我正在尝试使用Facebook OAuth授权网址加载 UIWebView ，而且我使用以下代码。当我的 UIWebView 加载Facebook登录页面时，我输入我的凭据，然后按登录按钮。当我点击按钮，我得到以下错误：

I am trying to load a UIWebView with the Facebook OAuth authorization URL and I am using the following code. When my UIWebView loads with Facebook login page, I enter my credentials, then press the "Log in" button. When I hit the button I am getting the following error:

WebKit在webView中放弃了一个未捕获的异常：decisionPolicyForNavigationAction：request：frame：decisionListener ：delegate：应用程序试图以模态方式呈现活动控制器。

WebKit discarded an uncaught exception in the webView:decidePolicyForNavigationAction:request:frame:decisionListener:delegate: Application tried to present modally an active controller .

这个代码适用于iOS 4.3和以前的版本，在iOS 5.0中工作。我不明白问题，任何人都可以帮助我吗？

This same code works fine with iOS 4.3 and previous versions, but it doesn't work in iOS 5.0. I don't understand the problem, can anyone please help me?

NSString *redirectUrlString = @"http://www.facebook.com/connect/login_success.html";
NSString *authFormatString = @"https://graph.facebook.com/oauth/authorize?client_id=%@&redirect_uri=%@&scope=%@&type=user_agent&display=touch";

NSString *urlString = [NSString stringWithFormat:authFormatString, _apiKey, redirectUrlString, _requestedPermissions];
NSURL *url = [NSURL URLWithString:urlString];

NSLog(@"NSURL: %@", urlString);

NSURLRequest *request = [NSURLRequest requestWithURL:url];
[_webView loadRequest:request];

推荐答案

您使用的是Ray Wenderlich代码吗？ （FBFunLoginDialog）..我发现这修复它：

Are you using the Ray Wenderlich code? (FBFunLoginDialog).. I found that this fixes it:

-(void)checkLoginRequired:(NSString *)urlString {
    NSLog(@"Url: %@",urlString);
    if ([urlString rangeOfString:@"login.php"].location != NSNotFound && [urlString rangeOfString:@"refid"].location == NSNotFound) {
            [_delegate displayRequired];
    } else if ([urlString rangeOfString:@"user_denied"].location != NSNotFound) {
         [_delegate closeTapped];
    }
}

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