我正在尝试在Collection Cell的subView中添加 UILabels 。但是当我滚动到另一个单元格并返回时，所有 UIlabels 都出现在两个单元格上，有些写在另一个单元格下。
我试过了collectionView.cellForItemAtIndexPath(indexPath) as? CollectionViewCell，但是当我使用它时，没有显示 UIlabel（我尝试了断点，它没有在 if 语句之后）
我该如何解决？
谢谢！！！
class CollectionView: UIViewController, UICollectionViewDataSource, UICollectionViewDelegate {
var collection = [PFObject]()
@IBOutlet weak var collectionView: UICollectionView!
let sidePadding:CGFloat = 10
var checkLocation: Bool = false
override func viewDidLoad()
{
super.viewDidLoad();
self.collectionView!.delegate = self
self.collectionView!.dataSource = self
}
func numberOfSectionsInCollectionView(collectionView: UICollectionView) -> Int {
return 1
}
func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return self.collection.count
}
func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCellWithReuseIdentifier("CollectionCell", forIndexPath: indexPath) as! CollectionViewCell
cell.layer.borderColor = UIColor.lightGrayColor().CGColor
cell.layer.borderWidth = 0.5
cell.layer.cornerRadius = 3
let collectionViewWidth = self.collectionView.bounds.size.width - self.sidePadding * 2
cell.frame.size.width = collectionViewWidth
let collectionViewHeight = self.collectionView.bounds.size.height/4.5
cell.frame.size.height = collectionViewHeight
// Display the country name
if let value = self.collection[indexPath.row]["Name"] as? String {
cell.cellTitle.text = String(Int(indexPath.row)) + "." + value
}
let width = (cell.bounds.width - 94 - 4*3 - 60 - 20)/4
let cellheight = CGFloat(6)
let cellheight1 = CGFloat(6 + 12 + 2)
var array = [String]()
if let MWl = collection[indexPath.row]["MW"] as? Int
{
if MWl == 1 {
array.append("M")
} else if MWl == 2 {
array.append("M")
array.append("W")
}
}
if let JAl = collection[indexPath.row]["JA"] as? Int
{
if JAl == 1 {
array.append("Jy")
} else if JAl == 2 {
array.append("Jy")
array.append("Ac")
}
}
if let HK = collection[indexPath.row]["HK"] as? Int
{
if HK == 1 {
array.append("HB")
} else if HK == 2 {
array.append("HB")
array.append("Ks")
}
}
if let SSl = collection[indexPath.row]["SSl"] as? Int
{
if SSl == 1 {
array.append("AB")
} else if SSl == 2 {
array.append("AB")
array.append("CD")
}
//I tried here too
// if let myCell = collectionView.cellForItemAtIndexPath(indexPath) as? CollectionViewCell
if array.count <= 4 {
for i in 0..<array.count {
let taille = CGFloat(i)
var si = CGFloat((1+i)*3 + 94 + 30)
let label = UILabel() as UILabel
label.frame = CGRectMake((si + width*taille), cellheight, width, 12)
label.textColor = UIColor(red: 0/255, green: 125/255, blue: 255/255, alpha: 1.0)
label.backgroundColor = UIColor.clearColor()
label.layer.borderWidth = 0.7
label.layer.borderColor = UIColor.lightGrayColor().CGColor
label.font = UIFont(name: "Futura-Medium", size: 9)
label.textAlignment = NSTextAlignment.Center
label.numberOfLines = 1
label.text = array[i]
label.layer.masksToBounds = true
label.layer.cornerRadius = 3.5
if let myCell = collectionView.cellForItemAtIndexPath(indexPath) as? CollectionViewCell {
myCell.contentView.addSubview(label)
}
}
} else {
for i in 0...3 {
let taille = CGFloat(i)
var si = CGFloat((1+i)*3 + 94 + 30)
let label = UILabel() as UILabel
label.frame = CGRectMake((si + width*taille), cellheight, width, 12)
label.textColor = UIColor(red: 0/255, green: 125/255, blue: 255/255, alpha: 1.0)
label.backgroundColor = UIColor.clearColor()
label.layer.borderWidth = 0.7
label.layer.borderColor = UIColor.lightGrayColor().CGColor
label.font = UIFont(name: "Futura-Medium", size: 9)
label.textAlignment = NSTextAlignment.Center
label.numberOfLines = 1
label.text = array[i]
label.layer.masksToBounds = true
label.layer.cornerRadius = 3.5
if let myCell = collectionView.cellForItemAtIndexPath(indexPath) as? CollectionViewCell {
myCell.contentView.addSubview(label)
}
}
var j = 0 as Int
for i in 4..<array.count {
let taille = CGFloat(j)
let si = CGFloat((1+j)*3 + 94 + 30)
let label = UILabel() as UILabel
label.frame = CGRectMake((si + width*taille), cellheight1, width, 12)
label.textColor = UIColor(red: 0/255, green: 125/255, blue: 255/255, alpha: 1.0)
label.backgroundColor = UIColor.clearColor()
label.layer.borderWidth = 0.7
label.layer.borderColor = UIColor.lightGrayColor().CGColor
label.font = UIFont(name: "Futura-Medium", size: 9)
label.textAlignment = NSTextAlignment.Center
label.numberOfLines = 1
label.text = array[i]
label.layer.masksToBounds = true
label.layer.cornerRadius = 3.5
if let myCell = collectionView.cellForItemAtIndexPath(indexPath) as? CollectionViewCell {
myCell.contentView.addSubview(label)
}
j = j + 1
}
}
return cell
}
}
编辑
我尝试以编程方式创建 UILabel。但通过这种方式，我使用了用 StoryBoard 设计的元素和以编程方式创建的元素。实际上我不能因为这个：
collectionView!.registerClass(RDCell.self, forCellWithReuseIdentifier: "Cell")
我以编程方式创建单元格的所有内容（collectionView 是使用情节提要创建的）并且它运行良好。