使用调用自定义tableview单元格的函数简化tableview代码

Question

通过在我的tableview函数中使用函数来简化我的代码。我认为这是可能的，但我不知道如何开始。我试图创建一个函数来执行我想要的操作，但我无法弄清楚如何在我的函数中调用自定义单元格变量。

这里是我想简化代码：

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell { 

    if indexPath.section == 0 { 
     // PART 1 
     let cell = tableView.dequeueReusableCell(withIdentifier: "CustomCell1", for: indexPath) as! PaydayDetailCellA1 
     let (jobDescription, day1, day2, day3, day4, day5, day6, day7, _) = tempPaydayDailyJobs[indexPath.row] 

     cell.tallyView.layer.cornerRadius = cell.tallyView.bounds.height/6.4 
     cell.tallyView.layer.masksToBounds = true 
     cell.tallyView.layer.borderColor = UIColor.lightGray.cgColor 
     cell.tallyView.layer.borderWidth = 0.5 

     cell.jobDesc.text = jobDescription 

     cell.dayColor1.text = day1 
     switch day1 { 
     case "1": 
      cell.dayColor1.text = "" 
      cell.dayColor1.backgroundColor = UIColor(red: 141/255, green: 198/255, blue: 63/255, alpha: 1) 
     case "X": 
      cell.dayColor1.text = "" 
      cell.dayColor1.backgroundColor = UIColor.red 
     case "E": 
      cell.dayColor1.backgroundColor = UIColor.lightGray 
     default: 
      cell.dayColor1.backgroundColor = UIColor(red: 141/255, green: 198/255, blue: 63/255, alpha: 1) 
      cell.dayColor1.textColor = UIColor.white 
     } 

     cell.dayColor2.text = day2 
     switch day2 { 
     case "1": 
      cell.dayColor2.text = "" 
      cell.dayColor2.backgroundColor = UIColor(red: 141/255, green: 198/255, blue: 63/255, alpha: 1) 
     case "X": 
      cell.dayColor2.text = "" 
      cell.dayColor2.backgroundColor = UIColor.red 
     case "E": 
      cell.dayColor2.backgroundColor = UIColor.lightGray 
     default: 
      cell.dayColor2.backgroundColor = UIColor(red: 141/255, green: 198/255, blue: 63/255, alpha: 1) 
      cell.dayColor2.textColor = UIColor.white 
     } 

     cell.dayColor3.text = day3 
     switch day3 { 
     case "1": 
      cell.dayColor3.text = "" 
      cell.dayColor3.backgroundColor = UIColor(red: 141/255, green: 198/255, blue: 63/255, alpha: 1) 
     case "X": 
      cell.dayColor3.text = "" 
      cell.dayColor3.backgroundColor = UIColor.red 
     case "E": 
      cell.dayColor3.backgroundColor = UIColor.lightGray 
     default: 
      cell.dayColor3.backgroundColor = UIColor(red: 141/255, green: 198/255, blue: 63/255, alpha: 1) 
      cell.dayColor3.textColor = UIColor.white 
     } 

     cell.dayColor4.text = day4 
     switch day4 { 
     case "1": 
      cell.dayColor4.text = "" 
      cell.dayColor4.backgroundColor = UIColor(red: 141/255, green: 198/255, blue: 63/255, alpha: 1) 
     case "X": 
      cell.dayColor4.text = "" 
      cell.dayColor4.backgroundColor = UIColor.red 
     case "E": 
      cell.dayColor4.backgroundColor = UIColor.lightGray 
     default: 
      cell.dayColor4.backgroundColor = UIColor(red: 141/255, green: 198/255, blue: 63/255, alpha: 1) 
      cell.dayColor4.textColor = UIColor.white 
     } 

     cell.dayColor5.text = day5 
     switch day5 { 
     case "1": 
      cell.dayColor5.text = "" 
      cell.dayColor5.backgroundColor = UIColor(red: 141/255, green: 198/255, blue: 63/255, alpha: 1) 
     case "X": 
      cell.dayColor5.text = "" 
      cell.dayColor5.backgroundColor = UIColor.red 
     case "E": 
      cell.dayColor5.backgroundColor = UIColor.lightGray 
     default: 
      cell.dayColor5.backgroundColor = UIColor(red: 141/255, green: 198/255, blue: 63/255, alpha: 1) 
      cell.dayColor5.textColor = UIColor.white 
     } 

     cell.dayColor6.text = day6 
     switch day6 { 
     case "1": 
      cell.dayColor6.text = "" 
      cell.dayColor6.backgroundColor = UIColor(red: 141/255, green: 198/255, blue: 63/255, alpha: 1) 
     case "X": 
      cell.dayColor6.text = "" 
      cell.dayColor6.backgroundColor = UIColor.red 
     case "E": 
      cell.dayColor6.backgroundColor = UIColor.lightGray 
     default: 
      cell.dayColor6.backgroundColor = UIColor(red: 141/255, green: 198/255, blue: 63/255, alpha: 1) 
      cell.dayColor6.textColor = UIColor.white 
     } 

     cell.dayColor7.text = day7 
     switch day7 { 
     case "1": 
      cell.dayColor7.text = "" 
      cell.dayColor7.backgroundColor = UIColor(red: 141/255, green: 198/255, blue: 63/255, alpha: 1) 
     case "X": 
      cell.dayColor7.text = "" 
      cell.dayColor7.backgroundColor = UIColor.red 
     case "E": 
      cell.dayColor7.backgroundColor = UIColor.lightGray 
     default: 
      cell.dayColor7.backgroundColor = UIColor(red: 141/255, green: 198/255, blue: 63/255, alpha: 1) 
      cell.dayColor7.textColor = UIColor.white 
     } 

     return cell 

    } else { 
     // PART 2 
     let cell2 = tableView.dequeueReusableCell(withIdentifier: "CustomCell2", for: indexPath) as! PaydayDetailCellA2 
     let (_, pointAmount) = tempDailyChoresSummary[indexPath.row] 

     cell2.dailyChoresNumber.text = "\(pointAmount)" 
     cell2.jobConsistencyBonusNumber.text = "\(pointAmount)" 
     cell2.previousUnpaidAmountsNumber.text = "\(pointAmount)" 
     cell2.dailyChoresSubtotalNumber.text = "\(pointAmount)" 

     return cell2 
    } 
} 

我有一个自定义的tableview细胞内标签的块。我希望标签的背景颜色根据外部数组中的数据改变颜色。我附上了它看起来像的图片（如果有帮助的话）。 Here is the picture of the tableview with colored labels.

还是有更简单的方法来做我想做的事情吗？

Answer 1

该方法可以减少表函数中的代码。请记住，这是一个概念。 您可以通过创建UITableViewCell的扩展来突破一些重复的属性设置。

首先创建一个协议

protocol Settable { 
    func setData(val: Int) 
} 

然后提出延期

extension Settable { 
    func setData(jobDescription: String, jobSubtotal: String, cornerRadius: Float, maskToBounds: Bool, borderColor: CGColor, borderWidth: Float) { 
     self.tallyView.layer.cornerRadius = cornerRadius 
     self.tallyView.layer.masksToBounds = maskToBounds 
     self.tallyView.layer.borderColor = borderColor 
     self.tallyView.layer.borderWidth = borderWidth 
     self.jobDesc.text = jobDescription 
     self.jobSubtotal.text = jobSubtotal 
    } 
} 

然后扩展你的UITableViewCell

class PaydayNewCellA1 : UITableViewCell, Settable { 

} 
class PaydayNewCellB1 : UITableViewCell, Settable { 

} 
class PaydayNewCellC1 : UITableViewCell, Settable { 

} 

然后，你可以做你的函数如下：

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell { 
    if (tableView == self.tableView1) { 
     if indexPath.section == 0 { 
      let cell = tableView1.dequeueReusableCell(withIdentifier: "CustomCell1", for: indexPath) as! PaydayNewCellA1 
      // Now use the function 
      cell.setData(jobDescription: "daily job \(indexPath.row + 1)", jobSubtotal: "50", cornerRadius: cell.tallyView.bounds.height/6.4, maskToBounds: true, borderColor: UIColor.lightGray.cgColor, borderWidth: 0.5) 
      return cell 
     } else { 
      let cell = tableView1.dequeueReusableCell(withIdentifier: "CustomCell2", for: indexPath) as! PaydayNewCellA2 
      return cell 
     } 
    } else if (tableView == tableView2) { 

    // rest of code etc 

}