我正在尝试在我的应用程序内部构建注册屏幕，尽管使用TableView是实现此目的的最佳方法。
我的问题是我的自定义单元格未显示其应有的内容。
这是我的 SignUpTableView-Class：
class SignUpTableView: UIView, UITableViewDelegate, UITableViewDataSource {
let emailTextField: CustomTextField = {
let v = CustomTextField()
v.borderActiveColor = .white
v.borderInactiveColor = .white
v.textColor = .white
v.font = UIFont(name: "AvenirNext-Regular", size: 17)
v.placeholder = "Email-Adresse"
v.placeholderColor = .gray
v.placeholderFontScale = 1
v.clearButtonMode = .always
v.minimumFontSize = 13
v.borderStyle = .line
v.autocapitalizationType = .none
v.translatesAutoresizingMaskIntoConstraints = false
return v
}()
let wishlistHandleTextField: CustomTextField = {
let v = CustomTextField()
v.borderActiveColor = .white
v.borderInactiveColor = .white
v.textColor = .white
v.font = UIFont(name: "AvenirNext-Regular", size: 17)
v.placeholder = "Wishlist-Handle"
v.placeholderColor = .gray
v.placeholderFontScale = 1
v.clearButtonMode = .always
v.minimumFontSize = 13
v.borderStyle = .line
v.autocapitalizationType = .none
v.translatesAutoresizingMaskIntoConstraints = false
// v.leftView = handleLeftView
// v.leftViewMode = .always
return v
}()
let anzeigeNameTextField: CustomTextField = {
let v = CustomTextField()
v.borderActiveColor = .white
v.borderInactiveColor = .white
v.textColor = .white
v.font = UIFont(name: "AvenirNext-Regular", size: 17)
v.placeholder = "Anzeigename: z.B. dein Vorname"
v.placeholderColor = .gray
v.placeholderFontScale = 1
v.clearButtonMode = .always
v.minimumFontSize = 13
v.borderStyle = .line
v.autocapitalizationType = .none
v.translatesAutoresizingMaskIntoConstraints = false
return v
}()
let passwordTextField: CustomTextField = {
let v = CustomTextField()
v.borderActiveColor = .white
v.borderInactiveColor = .white
v.textColor = .white
v.font = UIFont(name: "AvenirNext-Regular", size: 17)
v.placeholder = "Passwort"
v.placeholderColor = .gray
v.placeholderFontScale = 1
v.minimumFontSize = 13
v.borderStyle = .line
v.addTarget(self, action: #selector(SignUpViewController.passwordTextFieldDidChange(_:)),for: .editingChanged)
v.translatesAutoresizingMaskIntoConstraints = false
return v
}()
let passwordWiederholenTextField: CustomTextField = {
let v = CustomTextField()
v.borderActiveColor = .white
v.borderInactiveColor = .white
v.textColor = .white
v.font = UIFont(name: "AvenirNext-Regular", size: 17)
v.placeholder = "Passwort wiederholen"
v.placeholderColor = .gray
v.placeholderFontScale = 1
v.minimumFontSize = 13
v.borderStyle = .line
v.addTarget(self, action: #selector(SignUpViewController.passwordTextFieldDidChange(_:)),for: .editingChanged)
v.translatesAutoresizingMaskIntoConstraints = false
return v
}()
let signUpButton: TransitionButton = {
let v = TransitionButton()
v.translatesAutoresizingMaskIntoConstraints = false
v.setTitle("Registrieren", for: .normal)
v.titleLabel?.font = UIFont(name: "AvenirNext-DemiBold", size: 15)
v.titleLabel?.textColor = .white
v.setTitleColor(.white, for: .normal)
v.backgroundColor = UIColor.darkGray
v.layer.cornerRadius = 3
// v.addTarget(self, action: #selector(signUpButtonTapped(_:)), for: .touchUpInside)
return v
}()
let documentsLabel: UILabel = {
let v = UILabel()
v.text = "Durch Klicken auf 'Registrieren' akzeptiere ich die Nutzungbedingungnen und die Datenschutzrichtlinien."
v.font = UIFont(name: "AvenirNext-Regular", size: 13)
v.textColor = .lightGray
v.textAlignment = .center
v.numberOfLines = 0
v.translatesAutoresizingMaskIntoConstraints = false
return v
}()
var tableView = UITableView()
override init(frame: CGRect) {
super.init(frame: frame)
tableView.backgroundColor = .clear
// disable didSelectAt
self.tableView.allowsSelection = false
// self.tableView.separatorStyle = .none
self.tableView.register(SignUpTextfieldCell.self, forCellReuseIdentifier: SignUpTextfieldCell.reuseID)
self.tableView.register(SignUpDocumentCell.self, forCellReuseIdentifier: SignUpDocumentCell.reuseID)
self.tableView.register(SignUpButtonCell.self, forCellReuseIdentifier: SignUpButtonCell.reuseID)
tableView.delegate = self
tableView.dataSource = self
tableView.translatesAutoresizingMaskIntoConstraints = false
self.addSubview(tableView)
tableView.leftAnchor.constraint(equalTo: self.leftAnchor).isActive = true
tableView.rightAnchor.constraint(equalTo: self.rightAnchor).isActive = true
tableView.topAnchor.constraint(equalTo: self.topAnchor).isActive = true
tableView.bottomAnchor.constraint(equalTo: self.bottomAnchor).isActive = true
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
// MARK: - Table view data source
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 7
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
// 1st cell -> email textfield
if indexPath.row == 0 {
let cell = tableView.dequeueReusableCell(withIdentifier: "SignUpTextfieldCell", for: indexPath) as! SignUpTextfieldCell
cell.theTextField = self.emailTextField
return cell
// 2nd cell -> anzeigename
}else if indexPath.row == 1 {
let cell = tableView.dequeueReusableCell(withIdentifier: "SignUpTextfieldCell", for: indexPath) as! SignUpTextfieldCell
cell.theTextField = self.anzeigeNameTextField
return cell
// 3rd cell -> Wishlist-Handle
}else if indexPath.row == 2 {
let cell = tableView.dequeueReusableCell(withIdentifier: "SignUpTextfieldCell", for: indexPath) as! SignUpTextfieldCell
cell.theTextField = self.wishlistHandleTextField
return cell
// 4th cell -> passwort textfield
}else if indexPath.row == 3 {
let cell = tableView.dequeueReusableCell(withIdentifier: "SignUpTextfieldCell", for: indexPath) as! SignUpTextfieldCell
cell.theTextField = self.passwordTextField
return cell
// 5th cell -> repeat password textfield
}else if indexPath.row == 4 {
let cell = tableView.dequeueReusableCell(withIdentifier: "SignUpTextfieldCell", for: indexPath) as! SignUpTextfieldCell
cell.theTextField = self.passwordWiederholenTextField
return cell
// 6th cell -> document label
}else if indexPath.row == 5 {
let cell = tableView.dequeueReusableCell(withIdentifier: "SignUpDocumentCell", for: indexPath) as! SignUpDocumentCell
cell.documentLabel = self.documentsLabel
return cell
}
// last cell -> signUpButton
let cell = tableView.dequeueReusableCell(withIdentifier: "SignUpButtonCell", for: indexPath) as! SignUpButtonCell
cell.signUpButton = self.signUpButton
return cell
}
}
自定义单元格（这是我的SignUpTextfieldCell，其他几乎相同）
class SignUpTextfieldCell: UITableViewCell {
public static let reuseID = "SignUpTextfieldCell"
var theTextField: UITextField = {
let v = UITextField()
v.translatesAutoresizingMaskIntoConstraints = false
return v
}()
required init?(coder: NSCoder) {fatalError("init(coder:) has not been implemented")}
override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
super.init(style: style, reuseIdentifier: reuseIdentifier)
self.backgroundColor = .clear
setupViews()
}
func setupViews(){
contentView.addSubview(theTextField)
theTextField.topAnchor.constraint(equalTo: topAnchor).isActive = true
theTextField.leadingAnchor.constraint(equalTo: leadingAnchor).isActive = true
theTextField.trailingAnchor.constraint(equalTo: trailingAnchor).isActive = true
theTextField.bottomAnchor.constraint(equalTo: bottomAnchor).isActive = true
}
}
当我将SignUpTableView的实例添加到我的SignUpViewController时，它会显示出来，但单元格为空。我尝试为第一个backgroundColor设置一个cell，并且可行。但是为什么我的Textfields/Label/Button没有显示？
答案 0 :(得分：0)
我认为，必须在单元格中为此元素设置禁忌素，方法是尝试使用xib文件构建此单元格？ 如果你不喜欢xib，看看这个 programatically custom Cell
答案 1 :(得分：0)
尝试为UITableView添加高度，然后尝试
yourTableView.rowHeight = 44
yourTableView.estimatedRowHeight = UITableView.automaticDimension
答案 2 :(得分：0)
我通过简单地在每个textFiedlds/label/button中创建所有CustomCell来解决了这个问题。现在我有5个cells，里面有一个textfield，我想可以通过上面的代码简化它，但是它不起作用。