Question

我目前设置了一个集合视图，以在其视图中显示动态数量的对象。每个单元格显示来自相应对象的图像。当点击一个单元格时，它会触发一个segue到层次结构中的下一个视图。单元格的相应对象被传递到下一个视图但是，我注意到当我返回带有集合的视图时，单元格的排序已经改变，现在，当我点击一个来获得下一个视图时，它的属性来自对象其他细胞。

以下是我的UICollectionView方法：

func numberOfSectionsInCollectionView(collectionView: UICollectionView) -> Int {
    return 1
}

func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
    return objectsCount
}

func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCellWithReuseIdentifier("Chow Object Reuse ID", forIndexPath: indexPath) as UICollectionViewCell
    cell.backgroundColor = UIColor.whiteColor()
    var imageView:UIImageView = UIImageView()
    imageView.frame = CGRect(x: 0, y: 0, width: 90, height: 90)

    //Since loading of images is a time-intensive task, all the thumbnails 
    //may have not been fetched yet.
    if (imageThumbsArray.count == objectsCount) { //Eventually, a more elegant fix will be needed.
        imageView.image = imageThumbsArray[indexPath.row]
    }
    cell.addSubview(imageView)
    return cell
}

func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {
    self.objectToBePassed = self.chowObjectsArray[indexPath.row] as PFObject
    self.performSegueWithIdentifier("Show Chow Details", sender: self)
}

我也打电话给self.PastObjectsCollection.reloadData() 为什么要重新排序和混合细胞呢？

谢谢，亚洲时报Siddharth

Uicollectionview在返回视图时重新排序单元格

0 个答案: