I have a collectionView to which the data (String) is passed from another VC upon load. Now when I want to pass this data (String) to the UICollectionReusabelView. I am performing the following steps
CollectionViewVC:
class PhotoDetailVC: UIViewController, UICollectionViewDelegate, UICollectionViewDataSource, UICollectionViewDelegateFlowLayout, PDHeaderViewDelegate {
// Following variables are the ones to which the data is passed to.
var image : String!
var user: User!
var post: Posts!
@IBOutlet weak var collectionView: UICollectionView!
override func viewDidLoad() {
super.viewDidLoad()
print(post.imageURL)
collectionView.delegate = self
collectionView.dataSource = self
setupCells()
increaseView()
}
func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView {
let header = collectionView.dequeueReusableSupplementaryView(ofKind: kind, withReuseIdentifier: "mainImage", for: indexPath) as! PDHeader
// I am setting the ReusableView properties through this section. Instead I just want to pass them to the header and then do stuff over there.
header.post = self.post
header.lol = post.postauthor
header.label.text = post.caption
header.label.sizeToFit()
header.delegate = self
let ref = URL(string: post.imageURL)
Nuke.loadImage(with: ref!, into: header.mainPic)
imageInHeaderForAuthor(author: post.postauthor, view: header.profilePic)
return header
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, referenceSizeForHeaderInSection section: Int) -> CGSize {
let size = CGSize(width: collectionView.frame.width, height: collectionView.frame.height - 15)
return size
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
let width = (collectionView.bounds.size.width/3) - 1
let size = CGSize(width: width, height: width)
return size
}
func collectionView(_ collectionView: UICollectionView,
layout collectionViewLayout: UICollectionViewLayout,
minimumInteritemSpacingForSectionAt section: Int) -> CGFloat {
return 1.0
}
func collectionView(_ collectionView: UICollectionView, layout
collectionViewLayout: UICollectionViewLayout,
minimumLineSpacingForSectionAt section: Int) -> CGFloat {
return 1.0
}
func imageInHeaderForAuthor(author: String, view: UIImageView){
FBDataservice.ds.REF_USERS.child(author).observeSingleEvent(of: .value, with: { (snapshot) in
if let allData = snapshot.value as? Dictionary<String, Any> {
if let cred = allData["credentials"] as? Dictionary<String, Any> {
let postuser = User(userid: author, userData: cred)
if postuser.userPic != nil {
let req = URL(string: postuser.userPic)
Nuke.loadImage(with: req!, into: view)
}
}
}
})
}
}
ReusableView:
class PDHeader: UICollectionReusableView, FloatyDelegate {
@IBOutlet weak var label: UILabel!
@IBOutlet weak var mainPic: UIImageView!
@IBOutlet weak var profilePic: UIImageView!
var image : String!
var post: Posts!
var lol: String!
var floaty = Floaty()
var isOwner : Bool!
var delegate: PDHeaderViewDelegate!
override func awakeFromNib() {
super.awakeFromNib()
//This returns nil every time.
print(post.postauthor)
layoutFAB()
profilePic.makeCircle()
label.addDropShadow(opacity: 3, radius: 8)
}
func setDelegate(delegate: PDHeaderViewDelegate) {
self.delegate = delegate
}
func layoutFAB() {
floaty.openAnimationType = .pop
floaty.buttonImage = UIImage(named: "options")
floaty.addItem("Report", icon: UIImage(named: "trash")) { item in
self.delegate.fabReportClicked()
}
if isOwner{
floaty.addItem("Edit Profile", icon: UIImage(named: "edit")) { item in
self.delegate.fabEditClicked()
}
floaty.addItem("Delete", icon: UIImage(named: "trash")) { item in
self.delegate.fabDeleteButton()
}
}
floaty.fabDelegate = self
floaty.buttonColor = UIColor.white
floaty.hasShadow = true
floaty.size = 45
addSubview(floaty)
}
}
I have commented the code with the issues.
TL;DR - The collections doesn't pass data to header and as a result I have to set them from viewForSupplementaryElementOfKind.
what is the actual issue here? Is the header being load before the data is passed to it? If not, how can I fix this?
