我正在使用集合视图为我的医院构建一个 iOS 应用程序。但是,根据目的,我需要在专科诊所使用多个部分。如果只是 1 部分,我已经完成了代码。当我尝试将其分成 2 个部分时,它总是返回一个 nil 值。
请检查我下面的代码
public func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath)
if indexPath.section == 0 {
var buttonSpecialist = cell.viewWithTag(1) as! UIButton
buttonSpecialist.setTitle(list[indexPath.row].SpecialtyName, for: .normal)
let btnimg = try? UIImage(data: Data(contentsOf: URL(string: list[indexPath.row].ImageUrl)!))
var newimg = imageResize(image: btnimg as! UIImage, scaledTo: CGSize(width: 50, height: 50))
buttonSpecialist.setImage(newimg, for: .normal)
buttonSpecialist.contentMode = .center
buttonSpecialist.imageView?.contentMode = .scaleAspectFit
//let sign: Int = imageOnTop ? 1 : -1
let imageSize: CGSize? = buttonSpecialist.imageView?.frame.size
buttonSpecialist.titleEdgeInsets = UIEdgeInsetsMake(((imageSize?.height)! + 5) * 1, -(imageSize?.width)!, 0, 0)
let titleSize: CGSize? = buttonSpecialist.titleLabel?.bounds.size
buttonSpecialist.imageEdgeInsets = UIEdgeInsetsMake(-((titleSize?.height)! + 5) * 1, 0, 0, -(titleSize?.width)!)
cell.layer.borderWidth = 1.0
cell.layer.borderColor = UIColor.black.cgColor
}
else if indexPath.section == 1 {
var buttonSpecialist = cell.viewWithTag(1) as! UIButton
buttonSpecialist.setTitle(list2[indexPath.row].SpecialtyName, for: .normal)
let btnimg = try? UIImage(data: Data(contentsOf: URL(string: list2[indexPath.row].ImageUrl)!))
var newimg = imageResize(image: btnimg as! UIImage, scaledTo: CGSize(width: 50, height: 50))
buttonSpecialist.setImage(newimg, for: .normal)
buttonSpecialist.contentMode = .center
buttonSpecialist.imageView?.contentMode = .scaleAspectFit
//let sign: Int = imageOnTop ? 1 : -1
let imageSize: CGSize? = buttonSpecialist.imageView?.frame.size
buttonSpecialist.titleEdgeInsets = UIEdgeInsetsMake(((imageSize?.height)! + 5) * 1, -(imageSize?.width)!, 0, 0)
let titleSize: CGSize? = buttonSpecialist.titleLabel?.bounds.size
buttonSpecialist.imageEdgeInsets = UIEdgeInsetsMake(-((titleSize?.height)! + 5) * 1, 0, 0, -(titleSize?.width)!)
cell.layer.borderWidth = 1.0
cell.layer.borderColor = UIColor.black.cgColor
}
这里的主要问题是,我不知道如何为特定部分设置特定单元格。我已经在函数“cellforindexpath”中使用了“IF”,但它不起作用。
这是我在该部分返回的商品数量
func numberOfSections(in collectionView: UICollectionView) -> Int {
// #warning Incomplete implementation, return the number of sections
return 2
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
// #warning Incomplete implementation, return the number of items
if section == 0 {
return list.count
}
else if section == 1{
return list2.count
}
return 0
}
请帮我