如何防止在cellForRowAt中重复相同的代码

Question

您能帮我找一个解决方案而不是一次又一次地复制相同的代码吗？现在我有了这段代码

$ lsof | grep "outputfile"

如你所见，我一次又一次地复制这部分

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    if indexPath.row == 0 {
        let cell = tableView.dequeueReusableCell(withIdentifier: productImageCell, for: indexPath) as! ProductImageCell
        if let product = self.product {
            cell.product = product
        }
        cell.selectionStyle = .none
        return cell
    } else if indexPath.row == 1 {
        let cell = tableView.dequeueReusableCell(withIdentifier: productDetailCell, for: indexPath) as! ProductDetailCell
        cell.backgroundColor = UIColor.lightGray
        if let product = self.product {
            cell.product = product
        }
        cell.selectionStyle = .none
        return cell
    } else if indexPath.row == 2 {
        let cell = tableView.dequeueReusableCell(withIdentifier: productDeliveryCell, for: indexPath) as! ProductDeliveryTimeCell
        cell.selectionStyle = .none
        return cell
    } else {
        let cell = tableView.dequeueReusableCell(withIdentifier: productDeliveryCell, for: indexPath) as! ProductDeliveryTimeCell
        cell.selectionStyle = .none
        return cell
    }
}

我确实尝试了类似的东西，但它无法正常工作

    let cell = tableView.dequeueReusableCell(withIdentifier: productImageCell, for: indexPath) as! ProductImageCell
    if let product = self.product {
        cell.product = product
    }
    cell.selectionStyle = .none
    return cell

Answer 1

在所有单元格中包含product属性。删除indexpath.row == 2 块，它什么都不做。

写这样的代码，

if indexPath.row == 1 {
    var cell = tableView.dequeueReusableCell(withIdentifier: productImageCell, for: indexPath) as! ProductImageCell
    cell.product == "" //clear product field for reusing property 
     if let product = self.product {
        cell.product = product
    }
    cell.selectionStyle = .none
    return cell
} else if .....

Answer 2

  

//您需要在多个单元格中使用相同的类，

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    var cell:HomeCell!

    if homeArray[indexPath.row]["type"] == "1" {
        cell = tableView.dequeueReusableCell(withIdentifier: "ProductTitleCell", for: indexPath) as! HomeCell
    }
    else if homeArray[indexPath.row]["type"] == "2" {
        cell = tableView.dequeueReusableCell(withIdentifier: "ProductImageCell", for: indexPath) as! HomeCell
    }

    cell.lbl_Title_1.text = homeArray[indexPath.row]["product_name"]
    if cell.tag == 2 {
        cell.imageview_1.image = UIImage(named: homeArray[indexPath.row]["product_image"]!)
    }

    return cell
}