问题
I'm trying to accomplish the following:
I've followed the answer in this question, but I get the image below:
This is the code for the collection view controller:
class MainMenuViewController: UIViewController, UICollectionViewDataSource, UICollectionViewDelegate, UICollectionViewDelegateFlowLayout {
@IBOutlet var collectionView: UICollectionView!
@IBOutlet weak var dateTimeLabel: MarqueeLabel!
@IBOutlet weak var iconButton: UIButton!
@IBOutlet var imageView: UIImageView!
var iconButtonTimer: Timer!
var upDateTimer: Timer!
var statusString: String!
var alertTitle: String!
var networkStatusString: String!
override func viewDidLoad() {
super.viewDidLoad()
collectionView.dataSource = self
collectionView.delegate = self
collectionView.register(UINib.init(nibName: "MainMenuCell", bundle: nil), forCellWithReuseIdentifier: "MainMenuCell")
collectionView.collectionViewLayout = MainMenuLayout()
}
func numberOfSections(in collectionView: UICollectionView) -> Int {
return 8
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return 2
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
print(#function)
let padding: CGFloat = 50
let collectionViewSize = collectionView.frame.size.width - padding
return CGSize(width: collectionViewSize/2, height: collectionViewSize/2)
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "MainMenuCell", for: indexPath)
cell.backgroundColor = UIColor.red
return cell
}
}
And this is the storyboard...
回答1:
Conform to UICollectionViewDelegateFlowLayout and implement
func collectionView(_ collectionView: UICollectionView,
layout collectionViewLayout: UICollectionViewLayout,
insetForSectionAt section: Int) -> UIEdgeInsets {
return UIEdgeInsetsMake(10, 10, 10, 10)
}
Also comment this line
collectionView.collectionViewLayout = MainMenuLayout()
as no need for a custom layout to accomplish what you want
来源：https://stackoverflow.com/questions/51818189/display-uicollectionview-with-2-columns-of-equal-size-square-cells