How to transfer/display an image from CollectionView to another ViewController - ios

Question

I have looked up many examples and tried to incorporate but have been unsuccessful. In my CollectionView (That has been placed in a ViewController), I'd like to select a cell and push the cell image to another ViewController. The images have been placed in an Array of Dictionaries. I'm not sure, how i should edit both my prepareForSegue or my func collectionView...didSelectItemAtIndexPath. Also, any detailed explanation to go along with your code will be helpful as I'm still learning swift and its syntax.
Below is what i think all the information you need but please let me know if you need more:
func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if (segue.identifier == "ShowToStory") {
var story = sender as! UICollectionViewCell, indexPath = collectionView.indexPathForCell(story)
}
}
private func initStoryImages() {
var storyArchives = [StoryImages]()
let inputFile = NSBundle.mainBundle().pathForResource("StoryArchive", ofType: "plist")
let inputDataArray = NSArray(contentsOfFile: inputFile!)
for inputItem in inputDataArray as! [Dictionary<String, String>] {
let storyImage = StoryImages(dataDictionary: inputItem)
storyArchives.append(storyImage)
}
storyImages = storyArchives
}
ADDITIONAL CLASS: CollectionViewCell class
class CollectionViewCell: UICollectionViewCell {
#IBOutlet weak var cellImage: UIImageView!
func setStoryImage(item:StoryImages){
cellImage.image = UIImage(named:item.itemImage)
}
}
ADDITIONAL CLASS: UIViewController
class StoryView: UIViewController{
#IBOutlet weak var ImageToStory: UIImageView!
var story: StoryImages?
override func viewDidLoad() {
super.viewDidLoad()
ImageToStory.image = UIImage(named: (story?.itemImage)!)
}
}
ADDITIONAL CLASS: StoryImages
class StoryImages{
var itemImage: String
init(dataDictionary:Dictionary <String,String>) {
itemImage = dataDictionary["ItemImage"]!
}
class func newStoryImage(dataDictionary:Dictionary<String,String>) -> StoryImages {
return StoryImages(dataDictionary: dataDictionary)
}
}
}

Answer 1

First pass the indexPath of selectedItem in didSelectItemAtIndexPath
Now pass the image in prepareForSegue method like this
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if (segue.identifier == "ShowToStory") {
let cell = sender as! UICollectionViewCell //Change UICollectionViewCell with CustomCell name if you are using CustomCell
let indexPath = self.collectionView?.indexPathForCell(cell)
let story = storyImages[indexPath.row]
let destVC = segue.destinationViewController as! StoryView
destVC.selectedStory = story
}
}
Now declare one StoryImages types of object in your StoryView where you want to pass image and use that object in viewDidLoad to assign image
var selectedStory: StoryImages?
override func viewDidLoad() {
super.viewDidLoad()
ImageToStory.image = selectedStory.itemImage // or use NSData if it contain url string
}