为什么我无法在 swift 中再删除一个带有 JSON 参数的 CollectionVIew Cell？

Question

在我的 viewcontroller 中，我有两个 JSON APIs 1) 用于将图像和标题添加到 collectionView 单元格和 2) 用于删除单元格

使用下面的代码 我第一次只能删除一个单元格，如果我尝试删除另一个单元格我无法删除，..我收到 json 验证错误, 为什么?..我想随时删除选中的单元格..

这是我的第一个 JSON API 回复：为了将图像和标题添加到 collectionview... 相应的 pic_id 我需要删除单元格.. 在我的第二个JSONAPI

  {
"jsonrpc": "2.0",
"result": {
    "image": {
        "image": "1616588156.jpg",
        "image_title": "City",
        "user_id": 2,
        "updated_at": "2021-03-24 17:45:56",
        "created_at": "2021-03-24 17:45:56",
        "pic_id": 14
    },
    "message": "Image uploaded Successfully!"
 }
 }

上述 JSON 服务的代码，用于将图像和标题添加到 collectionview.. 这里我在 UserDefaults UserDefaults.standard.set(picId, forKey: "pic_id")

中像这样保存 pic_id

   fileprivate func postServiceCall(){
    
   if titleTextfield.text?.trim() == ""{
   return self.view.makeToast("please add service title")
   }
    let parameters = ["image_title" : titleTextfield.text?.trim() ?? ""]
    
    APIReqeustManager.sharedInstance.uploadMultipartFormData(param: parameters, url: CommonUrl.edit_profile_images, image: imageProfile, fileName: "image", vc: self, isHeaderNeeded: true) {(responseData) in
        print("edit profile result \(responseData)")
            if let result = responseData.dict?["result"] as? NSDictionary{
                    let success = result["status"] as? [String : Any]
                    let message = success?["message"] as? String
                if message == "Success"{
                    let image = result["image"] as? [String : Any]
                    let picId = image?["id"]
                    UserDefaults.standard.set(picId, forKey: "pic_id")// here i am saving pic_id
                    self.arrImageItems.append(ImageItemModel(title: self.titleTextfield.text, imgTitle: self.imageProfile))
                    self.collectionView.reloadData()
                }
                else{
                    self.view.makeToast(CommonMessages.somethingWentWrong)
                }
            }
        }
    }

JSON 删除集合视图中单元格的服务代码

@objc func deleteService(sender:UIButton) {
    let picId = UserDefaults.standard.string(forKey: "pic_id")
    print("selected picid \(picId)")
    let param = ["pic_id" : picId]
    APIReqeustManager.sharedInstance.serviceCall(param: param as [String : Any], method: .post, loaderNeed: false, loadingButton: sender as! TransitionButton, needViewHideShowAfterLoading: nil, vc: self,?url: CommonUrl.edit_profile_images_remove, isTokenNeeded: true, isErrorAlertNeeded: true, isSuccessAlertNeeded: false, actionErrorOrSuccess: nil, fromLoginPageCallBack: nil) { [weak self] (resp) in
            if let code = ((resp.dict?["result"] as? [String : Any])){
                print("total result: \(code)")
                let success = code["status"] as? [String : Any]
                let message = success?["message"] as? String
                if message == "Success"{
                    let selectedIndex = sender.tag
                    self?.arrImageItems.remove(at: selectedIndex)
                    self?.collectionView.reloadData()                    }
            }else{
                self?.view.makeToast(CommonMessages.somethingWentWrong)
            }
        }
}

这是集合视图 cellForItemAt 代码：

func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "ImageCollectionViewCell", for: indexPath) as! ImageCollectionViewCell
    cell.imgView.image = arrImageItems[indexPath.item].profileImage
    cell.lblTitle.text = arrImageItems[indexPath.row].title
    cell.deleteButton.tag = indexPath.row
    cell.deleteButton.addTarget(self, action: #selector(deleteService(sender:)), for: UIControl.Event.touchUpInside)

    return cell
}

这是ImageItemModel型号

class ImageItemModel{
var title: String?
var profileImage: UIImage?
var pic_id: String?

init(title: String?, imgTitle: UIImage?, pic_id: String?) {
    self.title = title
    self.profileImage = imgTitle
    self.pic_id = pic_id
}
}

使用上面的代码我只能在第一次删除一个单元格..如果我想再删除一个单元格然后我得到 JSON 验证错误...如何删除所有选定的单元格时间..请帮助代码

Answer 1

您在用户默认设置中使用相同的密钥存储图片，这是错误的。它只会存储循环的最后一项。您应该像这样在 postServiceCall 方法中的模型中添加 picID

self.arrImageItems.append(ImageItemModel(title: self.titleTextfield.text, imgTitle: self.imageProfile, picID: picId))

然后在 deleteService 方法中，您需要像这样获取 picID

let picId = UserDefaults.standard.string(forKey: "pic_id")//Replace this with this one
let picId = arrImageItems[sender.tag]. picID

现在一切正常。

为什么我无法在 swift 中再删除一个带有 JSON 参数的 CollectionVIew Cell？

Why i am not able to delete one more CollectionVIew Cell with JSON parameter in swift?

json

uicollectionview

swift