我已按照此stackoverflow question & answer作为指导在表格视图中创建自定义单元格(不在故事板中添加原型单元格),但是我无法使用自定义单元格创建表格视图,我只是得到一排空单元格。我确实看过其他SO问题,但他们没有帮助。
我相信我注册单元格的方式有问题。
(仅供参考:当我将一个原型单元格添加到我的表视图并为其分配一个类和单元格ID时,如果我然后禁用tableView.register(AppointmentTVCell.self, forCellReuseIdentifier: cellId)
它可以工作,我对此不感兴趣,因为我想最小化IB的使用)
下面是我在storyboard中的tableViewController,已经为其分配了一个表视图类AppointmentsTVC
以下是我的表视图控制器代码
class AppointmentsTVC: UITableViewController {
let cellId = "reuseIdentifier"
override func viewDidLoad() {
super.viewDidLoad()
tableView.register(AppointmentTVCell.self, forCellReuseIdentifier: cellId)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// MARK: - Table view data source
override func numberOfSections(in tableView: UITableView) -> Int {
// #warning Incomplete implementation, return the number of sections
return 1
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete implementation, return the number of rows
return 2
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
print("Cell for Row at func called")
let cell = tableView.dequeueReusableCell(withIdentifier: cellId, for: indexPath) as! AppointmentTVCell // Creating a cell
cell.caseId.text = "123456"
return cell
}
override func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return 150.0
}
}
以下是自定义表格视图单元格的代码
class AppointmentTVCell: UITableViewCell {
let caseId: UILabel = {
let label = UILabel()
label.font = UIFont.systemFont(ofSize: 14)
label.frame = CGRect(x: 0, y: 50, width: 100, height: 30)
label.numberOfLines = 2
//label.text = "Hello"
label.textColor = UIColor.black
return label
}()
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
contentView.addSubview(caseId)
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// Configure the view for the selected state
}
}
答案 0 :(得分:1)
使用didMoveToSuperview方法
class AppointmentTVCell: UITableViewCell {
let caseId: UILabel = {
let label = UILabel()
label.font = UIFont.systemFont(ofSize: 14)
label.frame = CGRect(x: 0, y: 50, width: 100, height: 30)
label.numberOfLines = 2
//label.text = "Hello"
label.textColor = UIColor.black
return label
}()
override func didMoveToSuperview() {
super.didMoveToSuperview()
if superview != nil {
contentView.addSubview(caseId)
}
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// Configure the view for the selected state
}
}
答案 1 :(得分:0)
我已经知道,如果没有NIB文件,将不会调用awakeFromNib,因此未添加视图。
通过查看此Stackoverflow question,我将代码修改为以下内容并且有效。
class AppointmentTVCell: UITableViewCell {
var caseId = UILabel()
required init(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)!
}
override init(style: UITableViewCellStyle, reuseIdentifier: String!) {
super.init(style: style, reuseIdentifier: reuseIdentifier)
//Do your cell set up
caseId.frame = CGRect(x: 0, y: 50, width: 100, height: 30)
caseId.text = "Hello"
caseId.font = UIFont(name:"HelveticaNeue-Bold", size: 16)
contentView.addSubview(caseId)
}
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// Configure the view for the selected state
}
}