模态显示所选表行中的新视图控制器

Question

 override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
        let memeShowViewController = self.storyboard!.instantiateViewControllerWithIdentifier("ShowMeme") as! MemeShowViewController
        memeShowViewController.memeImage = appDelegate.memes[indexPath.row].memeImage
        self.navigationController!.presentViewController(memeShowViewController, animated: true, completion: nil)
    }

So I have a tableview that has a nav controller embedded in it and when I present the memeShowViewController modally I was wondering why the view of the memeShowViewController has a black background color when I didn't change it to be black.

In storyboard:

In simulator

Right now I'm just adding a navigation bar to the segue-ed view controller, I was wondering if there is a better way to do as the only functionality I need from the navigation bar is for the done button to segue back to the tableView .

Answer 1

背景window具有黑色背景，因此如果您的应用程序不覆盖window任何部分（或alpha = 0 ），您将看到该黑色背景。