我在视图控制器中创建了一个表视图。表格视图也有标题，当点击它们时，您可以打开和关闭每个部分。
我想在每个标题标题中添加一个不同的标题，第一个标题为01，第二个标题为02，依此类推。
我试过获取该部分的计数并将其作为标题。但是，它只是使每个标题都相同。我不知道如何从01增加并将其应用到每个部分？
任何帮助都会很棒，谢谢你。
我有一个二维数组，如下所示：
var twoDimensionalArray = [
shootDaysExpandableNames(isExpanded: true, shotNumber: ["Cell_001", "Cell_002", "Cell_015"]),
shootDaysExpandableNames(isExpanded: true, shotNumber: ["Cell_004", "Cell_006", "Cell_008", "Cell_010", "Cell_014"]),
shootDaysExpandableNames(isExpanded: true, shotNumber: ["Cell_0017", "Cell_009", "Cell_020", "Cell_024", "Cell_34"])
]
然后我的viewForHeaderInSection看起来像这样：
func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
let shotNumberInt = twoDimensionalArray[section].shotNumber.count
let shootDayInt = twoDimensionalArray.count
var shotNumberAmount = String(shotNumberInt) + (" Shots")
var shootDay = String(shootDayInt)
let line: UIView = {
let line = UIView()
line.backgroundColor = UIColor(red:0.63, green:0.63, blue:0.63, alpha:1.0)
line.translatesAutoresizingMaskIntoConstraints = false
return line
}()
let openClose: UILabel = {
let openClose = UILabel()
openClose.text = "Open"
openClose.textColor = UIColor(red:0.17, green:0.59, blue:0.30, alpha:1.0)
openClose.font = UIFont(name: "Avenir-Medium", size: 12.0)
openClose.translatesAutoresizingMaskIntoConstraints = false
return openClose
}()
let shootDayNumber: UILabel = {
let shootDayNumber = UILabel()
shootDayNumber.text = shootDay
shootDayNumber.textColor = UIColor(red:0.18, green:0.20, blue:0.21, alpha:1.0)
shootDayNumber.font = UIFont(name: "AvenirNext-Bold", size: 40.0)
shootDayNumber.translatesAutoresizingMaskIntoConstraints = false
return shootDayNumber
}()
let shootDate: UILabel = {
let shootDate = UILabel()
shootDate.text = shotNumberAmount
shootDate.textColor = UIColor(red:0.63, green:0.63, blue:0.63, alpha:1.0)
shootDate.font = UIFont(name: "Avenir-Medium", size: 12.0)
shootDate.translatesAutoresizingMaskIntoConstraints = false
return shootDate
}()
let button = UIButton(type: .system)
button.backgroundColor = UIColor.white
button.addSubview(line)
button.addSubview(shootDayNumber)
button.addSubview(openClose)
button.addSubview(shootDate)
button.addTarget(self, action: #selector(HandleOpenClose), for: .touchUpInside)
button.tag = section
// CONSTRAINTS
shootDayNumber.centerYAnchor.constraint(equalTo: button.centerYAnchor, constant: 0).isActive = true
shootDayNumber.leftAnchor.constraint(equalTo: button.leftAnchor, constant: 17).isActive = true
line.topAnchor.constraint(equalTo: button.topAnchor, constant: 10).isActive = true
line.leftAnchor.constraint(equalTo: shootDayNumber.rightAnchor, constant: 5).isActive = true
line.rightAnchor.constraint(equalTo: button.rightAnchor).isActive = true
line.heightAnchor.constraint(equalToConstant: 1).isActive = true
shootDate.bottomAnchor.constraint(equalTo: button.bottomAnchor, constant: -10).isActive = true
shootDate.leftAnchor.constraint(equalTo: shootDayNumber.rightAnchor, constant: 5).isActive = true
openClose.bottomAnchor.constraint(equalTo: button.bottomAnchor, constant: -10).isActive = true
openClose.rightAnchor.constraint(equalTo: button.rightAnchor, constant: -17).isActive = true
return button
}
func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
let shotNumberInt = twoDimensionalArray[section].shotNumber.count
let shootDayInt = twoDimensionalArray.count
var shotNumberAmount = String(shotNumberInt) + (" Shots")
var shootDay = String(shootDayInt)
let line: UIView = {
let line = UIView()
line.backgroundColor = UIColor(red:0.63, green:0.63, blue:0.63, alpha:1.0)
line.translatesAutoresizingMaskIntoConstraints = false
return line
}()
let shootDayNumber: UILabel = {
let shootDayNumber = UILabel()
shootDayNumber.text = shootDay
shootDayNumber.textColor = UIColor(red:0.18, green:0.20, blue:0.21, alpha:1.0)
shootDayNumber.font = UIFont(name: "AvenirNext-Bold", size: 40.0)
shootDayNumber.translatesAutoresizingMaskIntoConstraints = false
return shootDayNumber
}()
let shotCount: UILabel = {
let shotCount = UILabel()
shotCount.text = shotNumberAmount
shotCount.textColor = UIColor(red:0.63, green:0.63, blue:0.63, alpha:1.0)
shotCount.font = UIFont(name: "Avenir-Medium", size: 12.0)
shotCount.translatesAutoresizingMaskIntoConstraints = false
return shotCount
}()
let button = UIButton(type: .system)
button.backgroundColor = UIColor.white
button.addSubview(line)
button.addSubview(shootDayNumber)
button.addSubview(shotCount)
button.addTarget(self, action: #selector(HandleOpenClose), for: .touchUpInside)
button.tag = section
// CONSTRAINTS
shootDayNumber.centerYAnchor.constraint(equalTo: button.centerYAnchor, constant: 0).isActive = true
shootDayNumber.leftAnchor.constraint(equalTo: button.leftAnchor, constant: 17).isActive = true
line.topAnchor.constraint(equalTo: button.topAnchor, constant: 10).isActive = true
line.leftAnchor.constraint(equalTo: shootDayNumber.rightAnchor, constant: 5).isActive = true
line.rightAnchor.constraint(equalTo: button.rightAnchor).isActive = true
line.heightAnchor.constraint(equalToConstant: 1).isActive = true
openClose.bottomAnchor.constraint(equalTo: button.bottomAnchor, constant: -10).isActive = true
openClose.rightAnchor.constraint(equalTo: button.rightAnchor, constant: -17).isActive = true
return button
仅供参考：我还在为每个标题添加一些其他UILabel，UIImages（这些标题在每个标题中都是相同的），但是我无法找到一种方法将它们添加到每个标题中而不创建和给出约束在viewForHeaderInSection函数中。不确定这是否是正确的方法呢？
答案 0 :(得分：1)
这一行：
let shootDayInt = twoDimensionalArray.count
错了。它应该是
let shootDayInt = section + 1
（twoDimensionalArray中元素的数量不会改变，但传递到tableView(_:viewForHeaderInSection:) 的部分编号会发生变化。）