Question

我有一个需要修复以下崩溃详细信息的应用。流程是这样的，用户启动应用程序，新闻文章显示在uitableview上，每个单元格都有一个文章详细信息。当用户单击任何单元格时，我们使用uipageviewcontroller

将所有文章设置在

pageViewController.setViewControllers([newsDetails!], direction: UIPageViewControllerNavigationDirection.forward, animated: false, completion: nil)

上

如果文章仅在文本视图中显示，则向左和向右滑动控制器效果很好。但是，如果连续有2个Web视图文章，请向右滑动（从Web视图文章移至下一个Web视图文章），然后向左滑动（返回至Web视图文章），此应用crash log崩溃。

只是为了进行实验，我将数据放入了textview而不是uiwebview中，并且它仍然在相同的崩溃日志中崩溃，本文在其中使用了iframe标记。代码在这里：

  func pageViewController(_ pageViewController: UIPageViewController, viewControllerBefore viewController: UIViewController) -> UIViewController? {
        //----------------------------------------------------------------------
        // Returning the article's detail view controller for the previous index
        print("VIEW CONTROLLER AFTER")
        return articleDetailViewController(for: detailPageIndex()-1,fromDetail:false)
    }

func pageViewController(_ pageViewController: UIPageViewController, viewControllerAfter viewController: UIViewController) -> UIViewController? {
        //------------------------------------------------------------------
        // Returning the article's detail view controller for the next index
        print("VIEW CONTROLLER BEFORE")

        return articleDetailViewController(for: detailPageIndex()+1,fromDetail:false)
    }

// We create a new instance of detail View Controller when ever a new VC is requested 

func articleDetailViewController(for index: Int,fromDetail :Bool) -> MISNewsDetailViewController? {
        let allNews:Bool
         if(UserDefaults.standard.object(forKey: "IsAllNewsSelected") == nil || (UserDefaults.standard.object(forKey: "IsAllNewsSelected") as! String) == "YES"){
            allNews = true
         }else{
            allNews = false
        }
        //--------------------------------------------
        // If the index is out of bound, nil is return
        if(allNews){
            if (index == -1 || index >= (allArticles.count)) {
                return nil
            }
        }else{
            if (index == -1 || index >= (myArticles.count)) {
                return nil
            }
        }

        //---------------------------------------------------
        // Getting the article object for the requested index
        let article: MISArticle?
        let detailViewController = storyboard?.instantiateViewController(withIdentifier: "MISNewsDetailViewController") as? MISNewsDetailViewController

        let myAppDelegate = (UIApplication.shared.delegate as! AppDelegate)
        if(myAppDelegate.isLaunchedFromWidget){
            article =  self.getTheWidgetSelectedArticleBaasedOnGlobalId();
        }else{
            if(allNews){
                article = allArticles[index]
                 detailViewController?.isAllNewsPost = true
            }else{
                article = myArticles[index]
                 detailViewController?.isAllNewsPost = false
            }
        }

        detailViewController?.mPost = article
        detailViewController?.isRefreshPost = fromDetail
        return detailViewController
    }

UIPageViewController中的UIWebView使应用程序崩溃

0 个答案: