collection view Autolayout Final
AutoLayout : for "CollectionView" only – "Hight" & "Right" to add new constrain in below to size
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//
// ViewController.swift
// collectioncart view
//
// Created by sital mandal on 4/18/18.
// Copyright © 2018 sital mandal. All rights reserved.
//
import UIKit
class ViewController: UIViewController, UICollectionViewDelegateFlowLayout, UICollectionViewDataSource {
var collectionView: UICollectionView?
var screenSize: CGRect!
var screenWidth: CGFloat!
var screenHeight: CGFloat!
// var myImage = UIImage(named: "1")
var imageArr : NSArray!
override func viewDidLoad() {
super.viewDidLoad()
screenSize = UIScreen.main.bounds
screenWidth = screenSize.width
screenHeight = screenSize.height
let layout: UICollectionViewFlowLayout = UICollectionViewFlowLayout()
layout.sectionInset = UIEdgeInsets(top: 20, left: 0, bottom: 10, right: 0)
layout.itemSize = CGSize(width: screenWidth / 3, height: screenWidth / 3)
collectionView = UICollectionView(frame: self.view.frame, collectionViewLayout: layout)
collectionView!.dataSource = self
collectionView!.delegate = self
imageArr = ["1","2","3","4","5","6","7","1","2","3","4","5","6","7","1","2","3","4","5","6","7"]
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return imageArr.count
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CollectionViewCell", for: indexPath) as! CollectionViewCell
cell.backgroundColor = UIColor.white
cell.imageView.image = UIImage(named:imageArr.object(at: indexPath.row) as! String )
return cell
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
let cellsAcross: CGFloat = 3
let spaceBetweenCells: CGFloat = 1
let dim = (collectionView.bounds.width - (cellsAcross - 1) * spaceBetweenCells) / cellsAcross
return CGSize(width: dim, height: dim)
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, insetForSectionAt section: Int) -> UIEdgeInsets {
return UIEdgeInsetsMake(0, 0, 0.0, 0.0)
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumLineSpacingForSectionAt section: Int) -> CGFloat {
return 0.0
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumInteritemSpacingForSectionAt section: Int) -> CGFloat {
return 0.0
}
}
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//
// CollectionViewCell.swift
// collectioncart view
//
// Created by sital mandal on 4/18/18.
// Copyright © 2018 sital mandal. All rights reserved.
//
import UIKit
class CollectionViewCell: UICollectionViewCell {
@IBOutlet weak var imageView: UIImageView!
}
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