我正在使用sqlite数据库，该数据库具有1000多个记录，并在collection view单元中获取数据。我已使用自定义收集单元格来显示数据。多数时候，当我对按钮执行操作并重新加载集合视图时，我会遇到内存问题。因此，我正在共享代码，请迅速引导我。
在我的viewDidLoad中，我从数据库中填充数组列表
override func viewDidLoad() {
super.viewDidLoad()
// Register cell
navigationView.dropShadow()
collectionView.register(UINib(nibName: "HomeViewCell", bundle: nil), forCellWithReuseIdentifier: "HomeViewCell")
navigationController?.navigationBar.isHidden = true
appDelegate = UIApplication.shared.delegate as! AppDelegate
profilesArray.removeAll()
profileImageArray.removeAll()
let tempProfilesArray = masterDBObj.retriveMsterData(fromDB: "PROFILE", withGroupName: groupname)
//Get offers IMG data from local DB / Remove duplicates - sub sets
let IMGDBObj = TCMasterImageDB()
var sameProfileSet: Set<AnyHashable> = []
for i in 0 ..< tempProfilesArray!.count {//tempProfilesArray!.count
autoreleasepool {
guard let DBObj = tempProfilesArray![i] as? TCMasterDB else {return}
guard let IMGArray = IMGDBObj.retriveIMGData(fromDB: "PROFILE", withCode: DBObj.codeString) else {return}
let destinationName = DBObj.nameString
if !sameProfileSet.contains(destinationName){
print("Profile name : \(DBObj.nameString)")
if !(DBObj.nameString == "25-OH VITAMIN D (TOTAL)" || DBObj.nameString == "HbA1c"){
profilesArray.append(DBObj)
profileImageArray.append(IMGArray)
sameProfileSet.insert(destinationName)
}
}
}
}
}
此功能用于在单元格中显示数据
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
self.customCell = collectionView.dequeueReusableCell(withReuseIdentifier: "HomeViewCell", for: indexPath) as? HomeViewCell
self.customCell!.configureCell(imageName: self.profilesArray[indexPath.item].nameString, cell: self.customCell!, forItemAtIndexPath: indexPath)
self.customCell!.lblTes.text! = self.profilesArray[indexPath.row].nameString
var subIMGArray = self.profileImageArray[indexPath.row] as! Array<Any>
if subIMGArray.count == 0 {
self.customCell!.profileImageView.image = UIImage(named: "OfferProfileDefault.png")
}else{
var IMGDBObj = TCMasterImageDB()
IMGDBObj = subIMGArray[0] as! TCMasterImageDB
self.customCell!.profileImageView.contentMode = .scaleToFill
self.customCell!.profileImageView.image = ImageManager.imageNamed("OfferProfileDefault.png")
self.customCell!.profileImageView.loadImage(fromURL: IMGDBObj.imgLocationString!)
}
let offerDBObj = self.profilesArray[indexPath.row]
self.customCell!.testRateLbl.text = "\(offerDBObj.testCountString!) tests @ ₹ \(offerDBObj.rateB2CString!)"
self.customCell!.addToCartBtn.tag = (indexPath.row)
self.customCell!.addToCartBtn.addTarget(self, action: #selector(self.myProfileCartAction), for: UIControlEvents.touchUpInside)
//Offer price
if TCUtilityManager.retrieve(fromUserDefaults: "USERTYPE") == "LOYALTY"{
//LOYALTY_DISCOUNT
let loyaltyDiscout: Float = Float(TCUtilityManager.retrieve(fromUserDefaults: "LDISCOUNT")) ?? 0.0
let offerRateAmount: Float = Float(offerDBObj.ratePayAmountString)!
let finalAmount = Int(roundf(offerRateAmount * (loyaltyDiscout / 5)) * 5)
if finalAmount == 0 {
if (offerDBObj.rateB2CString == offerDBObj.ratePayAmountString) {
self.customCell!.testRateLbl.text = "\(offerDBObj.testCountString!) tests @ ₹ \(offerDBObj.rateB2CString!)"
} else {
self.customCell!.testRateLbl.text = "\(offerDBObj.testCountString!) tests @ ₹ \(offerDBObj.rateB2CString!)"
}
}else{
if Int(offerDBObj.rateB2CString) == finalAmount {
self.customCell!.testRateLbl.text = "\(offerDBObj.testCountString!) tests @ ₹ \(finalAmount)"
} else {
self.customCell!.testRateLbl.text = "\(offerDBObj.testCountString!) tests @ ₹ \(finalAmount)"
}
}
}else{
if (offerDBObj.rateB2CString == offerDBObj.ratePayAmountString) {
self.customCell!.testRateLbl.text = "\(offerDBObj.testCountString!) tests @ ₹ \(offerDBObj.ratePayAmountString!)"
} else {
self.customCell!.testRateLbl.text = "\(offerDBObj.testCountString!) tests @ ₹ \(offerDBObj.ratePayAmountString!)"
}
}
//Cart button
let addToCartValue = offerDBObj.addTestToCartString!
print("Result : \(addToCartValue)")
// autoreleasepool {
// DispatchQueue.main.async {
switch addToCartValue {
case "TRUE","TRUE_WITHOUT_PROFILE":
self.customCell!.addToCartBtn.isUserInteractionEnabled = true
// customCell!.addToCartBtn.setImage(UIImage(named: "cart_Nav"), for: .normal)//red
self.customCell!.backgroundColor = #colorLiteral(red: 0.8922533393, green: 0.2110714018, blue: 0.2173824012, alpha: 1)
self.customCell!.topView.backgroundColor = #colorLiteral(red: 0.8922533393, green: 0.2110714018, blue: 0.2173824012, alpha: 1)
self.customCell!.lblTes.textColor = #colorLiteral(red: 1.0, green: 1.0, blue: 1.0, alpha: 1.0)
self.customCell!.testRateLbl.textColor = #colorLiteral(red: 1.0, green: 1.0, blue: 1.0, alpha: 1.0)
self.customCell!.addToCartBtn.backgroundColor = #colorLiteral(red: 1, green: 1, blue: 1, alpha: 1)
self.customCell!.addToCartBtn.setTitleColor(#colorLiteral(red: 0.8922533393, green: 0.2110714018, blue: 0.2173824012, alpha: 1), for: .normal)
self.customCell!.addToCartBtn.setTitle("REMOVE", for: .normal)
break
case "TRUE_WITH_PROFILE","TRUE_WITH_OFFER","TRUE_WITH_THYRONOMICS":
self.customCell!.addToCartBtn.isUserInteractionEnabled = false
self.customCell!.backgroundColor = #colorLiteral(red: 1, green: 1, blue: 1, alpha: 1)
self.customCell!.topView.backgroundColor = #colorLiteral(red: 1, green: 1, blue: 1, alpha: 1)
self.customCell!.lblTes.textColor = #colorLiteral(red: 0, green: 0, blue: 0, alpha: 1)
self.customCell!.testRateLbl.textColor = #colorLiteral(red: 0, green: 0, blue: 0, alpha: 1)
self.customCell!.addToCartBtn.backgroundColor = #colorLiteral(red: 0.8039215803, green: 0.8039215803, blue: 0.8039215803, alpha: 1)
self.customCell!.addToCartBtn.setTitleColor(#colorLiteral(red: 0.501960814, green: 0.501960814, blue: 0.501960814, alpha: 1), for: .normal)
self.customCell!.addToCartBtn.setTitle("INCLUDE", for: .normal)
break
default:
self.customCell!.addToCartBtn.isUserInteractionEnabled = true
self.customCell!.backgroundColor = #colorLiteral(red: 1, green: 1, blue: 1, alpha: 1)
self.customCell!.topView.backgroundColor = #colorLiteral(red: 1, green: 1, blue: 1, alpha: 1)
self.customCell!.lblTes.textColor = #colorLiteral(red: 0, green: 0, blue: 0, alpha: 1)
self.customCell!.testRateLbl.textColor = #colorLiteral(red: 0, green: 0, blue: 0, alpha: 1)
self.customCell!.addToCartBtn.backgroundColor = #colorLiteral(red: 0.8922533393, green: 0.2110714018, blue: 0.2173824012, alpha: 1)
self.customCell!.addToCartBtn.setTitleColor(#colorLiteral(red: 1, green: 1, blue: 1, alpha: 1), for: .normal)
self.customCell!.addToCartBtn.setTitle("ADD", for: .normal)
break
}
// }
// }
print("end Result : \(addToCartValue)")
return customCell! // return your cell
}