在 Collection View 中准备 segue

Question

我已经实现了集合视图，但是有一个 segue 错误。我正在尝试使用 segue 将图像传递给另一个视图控制器。这是它的代码。

func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath)
{
    self.performSegueWithIdentifier("showImage", sender: self)
}

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?)
{
    if segue.identifier == "showImage"
    {
        let indexPaths = self.collectionView!.indexPathsForSelectedItems()!
        let indexPath = indexPaths[0] as NSIndexPath
        let vc = segue.destinationViewController as! NewViewController
        vc.image = self.imageArray[indexPath.row]!
        vc.title = self.appleProducts[indexPath.row]
    }
}

 }

但是我在 collectionView!.indexPathsForSelectedItems 处遇到错误，提示找不到成员 indexPathsForSelectedItems。为什么会这样，应该如何改变。谢谢

Answer 1

我对您的代码进行了一些修改

在您的代码中添加以下更改

func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath)
{
    self.performSegueWithIdentifier("showImage", sender: indexPath)
}

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?)
{
    if segue.identifier == "showImage"
    {
        let indexPath : NSIndexPath = sender as! NSIndexPath           
        let vc = segue.destinationViewController as! NewViewController
        vc.image = self.imageArray[indexPath.row]!
        vc.title = self.appleProducts[indexPath.row]
    }
}

在 Collection View 中准备 segue

Preparing segue in Collection View

ios

segue

uicollectionview

swift