尝试使用UIWebView中的Xcode 4.2 iOS 5推送到详细视图 [英] Trying to push to detail view with Xcode 4.2 iOS 5 from UIWebView

问题描述

我有一个嵌入在NavigationController中的ViewController。 ViewController有一个UIWebView，我正试图从中捕获链接。我能够拦截链接，但是当我尝试将链接内容推送到详细页面时，它似乎正在触发一个新的控制器，但它是不可见的。如果我第二次点击链接（或者我只是点击第二个链接），我会看到弹出一个后退按钮，但新的ViewController的实际内容再次显示。

I have a ViewController embedded in a NavigationController. The ViewController has a UIWebView that I'm trying to capture links from. I'm able to intercept the links, but when I try to push the link content to a detail page, it seems to be firing a new Controller but it's invisible. If I click a link for a second time (or if I just click a second link) I see a back button pop up, but again the actual content of the new ViewController is not visible.

以下是第一个链接点击的日志输出：

Here is the log output for the first link click:

2011-11-07 10:38:27.526 WGGB[43875:f803] *** WebKit discarded an uncaught exception in the webView:decidePolicyForNavigationAction:request:frame:decisionListener: delegate:   <NSInternalInconsistencyException> Could not load NIB in bundle: 'NSBundle  </Users/sonnyjitsu/Library/Application Support/iPhone Simulator/5.0/Applications/4B3D5152-4EA5-4C84-BB22-A774FCB8B6A7/WGGB.app> (loaded)' with name 'Detail View'

如您所见，它正在加载新的查看，但我在模拟器中看不到任何内容。然后我第二次点击相同的链接（或点击一个新的链接）我在日志中看到这一点：

As you can see, it's "loading" the new view, but I see nothing in the simulator. Then the second time I click the same link (or click a new link) I see this in the log:

2011-11-07 10:38:30.605 WGGB[43875:f803] url is http://www.blahblahblah.com/mobile

有问题的方法是：

-(BOOL) webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
{

    NSURL *url = request.URL;
    NSString *urlString = url.absoluteString;
    NSRange page = [ urlString rangeOfString: @"/mobile" ];
    if (page.location == NSNotFound) {

        SingleStoryViewController *detailViewController = [[SingleStoryViewController alloc] initWithNibName:@"Detail View" bundle:nil];
        NSString *requestURL = 
            [NSString stringWithContentsOfURL:url encoding:NSUTF8StringEncoding error:nil];
        [detailViewController.webView loadRequest:
            [NSURLRequest requestWithURL:[NSURL URLWithString:requestURL]]];
        [self.navigationController pushViewController:detailViewController animated:YES];

        NSLog(@"url is %@", url);
        return NO;
    } else {
        return YES;
    }
}

我的SingleStoryViewController.m顶部

Top of my SingleStoryViewController.m

#import "SingleStoryViewController.h"

@implementation SingleStoryViewController

@synthesize webView;

整个SingleStoryViewController.h
#import

Entire SingleStoryViewController.h #import

@interface SingleStoryViewController : UIViewController

@property (weak, nonatomic) IBOutlet UIWebView *webView;

@end

这是我的Xcode故事板图片的链接，为了它的价值： http://i.imgur.com/I653v.png

Here is a link to an image of my Xcode storyboard, for what it's worth: http://i.imgur.com/I653v.png

我现在已经工作了14到16个小时，我终于说'叔叔'并寻求帮助。任何帮助将不胜感激，我是iOS编程的新手，所以我很抱歉，如果有一些非常愚蠢的东西，我很遗憾。

I've been working on this for a good 14 to 16 hours now and I'm finally saying 'uncle' and asking for help. Any help would be appreciated, I'm very new to iOS programming so I apologize if there is something really stupid I'm missing.

推荐答案

如您所见，它正在加载新视图......

As you can see, it's "loading" the new view...

这不是错误说的是什么。错误说明了这一点：

That's not what the error says. The error says this:

Could not load NIB in bundle: [...] with name 'Detail View'

我首先检查应用中.xib文件的名称 - 听起来好像不是匹配您在代码中使用的名称。

I'd start by checking the name of the .xib file in your app -- it sounds like it may not match the name you're using in the code.

更新：根据以下评论，事实证明这是应用程序使用的故事板并且没有不包含任何.xib文件，因此尝试从.xib加载视图控制器会产生错误也就不足为奇了。必要时，从故事板加载视图控制器的正确方法是使用UIStoryboard的 -instantiateViewControllerWithIdentifier：方法而不是UIViewController的 -initWithNibName：bundle： 。

Update: Per comments below, it turns out that this is app uses storyboards and doesn't contain any .xib files, so it's no surprise that attempting to load a view controller from a .xib produces an error. The correct way to load a view controller from a storyboard, when necessary, is to use UIStoryboard's -instantiateViewControllerWithIdentifier: method instead of UIViewController's -initWithNibName:bundle:.

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