I have two containers in a view. The top one has a collection view. I want to update my collection view from a button when a button is hit from the below container. My button is also changing the value of an array, which my collection view uses.
I thought didSet would do the job but unfortunately did not work.
Top:
class TopViewController: UIViewController, UICollectionViewDataSource, UICollectionViewDelegate {
@IBOutlet weak var favoritesCV: UICollectionView!
var myFavorites = [] {
didSet {
self.favoritesCV.reloadData()
}
}
override func viewDidAppear(animated: Bool) {
myFavorites = favoritesInstance.favoritesArray
}
func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return myFavorites.count
}
func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
let cell : FavoritesCollectionViewCell = collectionView.dequeueReusableCellWithReuseIdentifier("Cell", forIndexPath: indexPath) as! FavoritesCollectionViewCell
var myPath = myFavorites[indexPath.row] as! String
cell.myImage.image = UIImage(named: myPath)
return cell
}
}
Bottom:
class BottomViewController: UIViewController, UIScrollViewDelegate {
@IBAction func addFavorites(sender: AnyObject) {
favoritesInstance.favoritesArray.append("aaaa.jpg")
}
}
Storage Class:
class Favorites {
var favoritesArray:Array <AnyObject>
init(favoritesArray:Array <AnyObject>) {
self.favoritesArray = favoritesArray
}
}
var favoritesInstance = Favorites(favoritesArray:[])
