Question

我的UINavigationController包含UIViewController（例如'FirstVC'）。这个'FirstVC'包含UIScrollView，在UIScrollView的每一页上我添加了另一个UIViewCotroller（比如'SecondVC'）。此 SecondVC 包含具有多个链接的UIWebView。我想推送另一个UIViewController（比如'ThirdVC'），上面有UIScrollView。但是当我尝试做同样的事情时，它会崩溃我的应用程序。这是我申请的代码：

FirstVC

- (void)viewDidLoad{

    [super viewDidLoad];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(ShowThirdVCNotification:) name:@"ShowThirdVC" object:nil]; 

}

-(void)showAlbumNotification:(id)notificationObject{
    NSLog(@"ShowThirdVCNotification: %@", [notificationObject object]);// It's an array

    ThirdVC *controller = [[ThirdVC alloc] initWithNibName:@"ThirdVC" bundle:nil];
    [controller setImageArr:[notificationObject object]];
    [self.navigationController pushViewController:controller animated:NO];
}

/ * SecondVC.view在加载* /

时被添加到FirstVC的scrollView中

SecondVC ：

- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType{
NSString *urlStr = [NSString stringWithFormat:@"%@", [request URL]];

    if ([[urlStr lastPathComponent] rangeOfString:@".jpg"].length) {
        [[NSNotificationCenter defaultCenter] postNotificationName:@"ShowAlbum" object:self.imageDetailArr];
        return NO;
    }
return YES;
}

在主题1中，它列出了以下内容：

4   0x00b0a8ab in -[UIWebScrollView didMoveToWindow] ()
5   0x007a583e in -[UIView(Internal) _didMoveFromWindow:toWindow:] ()
6   0x007af6d1 in -[UIScrollView _didMoveFromWindow:toWindow:] ()
7   0x007a54bb in -[UIView(Internal) _didMoveFromWindow:toWindow:] ()
8   0x007a54bb in -[UIView(Internal) _didMoveFromWindow:toWindow:] ()
9   0x007a54bb in -[UIView(Internal) _didMoveFromWindow:toWindow:] ()
10  0x007af6d1 in -[UIScrollView _didMoveFromWindow:toWindow:] ()
11  0x007a54bb in -[UIView(Internal) _didMoveFromWindow:toWindow:] ()
12  0x007a54bb in -[UIView(Internal) _didMoveFromWindow:toWindow:] ()
13  0x007a1c72 in -[UIView(Hierarchy) _postMovedFromSuperview:] ()
14  0x007a04c6 in __UIViewWasRemovedFromSuperview ()
15  0x007a0141 in -[UIView(Hierarchy) removeFromSuperview] ()
16  0x009e69bb in -[UINavigationTransitionView _cleanupTransition] ()
17  0x009e6c86 in -[UINavigationTransitionView _navigationTransitionDidStop] ()
18  0x0079a499 in -[UIViewAnimationState sendDelegateAnimationDidStop:finished:] ()
19  0x00799d6d in +[UIViewAnimationState popAnimationState] ()
20  0x007a326c in +[UIView(Animation) commitAnimations] ()
21  0x009e6702 in -[UINavigationTransitionView transition:fromView:toView:] ()
22  0x009e5ccb in -[UINavigationTransitionView transition:toView:] ()
23  0x008422b7 in -[UINavigationController _startTransition:fromViewController:toViewController:] ()
24  0x008423df in -[UINavigationController _startDeferredTransitionIfNeeded] ()
25  0x00842561 in -[UINavigationController __viewWillLayoutSubviews] ()
26  0x0095e4ca in -[UILayoutContainerView layoutSubviews] ()
27  0x007a8301 in -[UIView(CALayerDelegate) layoutSublayersOfLayer:] ()

Answer 1

我认为您使用UIWebViewNavigationType条件并解决您的问题试试这个： -

 - (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType{
        NSString *urlStr = [NSString stringWithFormat:@"%@", [request URL]];

        if ([[urlStr lastPathComponent] rangeOfString:@".jpg"].length) {

            if (navigationType == UIWebViewNavigationTypeLinkClicked)
            {
                ThirdVC *controller = [[ThirdVC alloc] initWithNibName:@"ThirdVC" bundle:nil];
                controller setImageArr:self.imageDetailArr];
                [self.navigationController pushViewController:controller animated:NO];

            }
            return NO;
        }
        return YES;
    }

尝试从Web视图委托中推送新的视图控制器时，应用程序崩溃

1 个答案: