无法为 TableView 的自定义单元格设置任何属性。此外,当我在 cellsForRowAt 函数中填充 table 时,它 returns 为空 table
Not able to set any properties to the custom cell for TableView. Also, when i populate the table in cellsForRowAt function it returns empty table
无法为 table 视图的自定义单元格设置属性。
此外,无法在 cellForRowAt 函数中为自定义单元格赋值。
我正在使用 swift 5 和 xcode 10.2
import UIKit
class ContainerViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
let CellId = "CellId"
let tableView : UITableView = {
let tv = UITableView()
tv.allowsSelection = false
tv.separatorStyle = .none
return tv
}()
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: CellId, for: indexPath) as! Cell
//cell.labelView.textColor = .red -- tried to set color here
cell.labelView.text = "Label \(indexPath.row)" // this code doesn't seems to work
return cell
}
}
//- Custom Cell Class
class Cell: UITableViewCell{
let cellView : UIView = {
let view = UIView()
view.backgroundColor = UIColor.red // -- this property doesn't reflect. Also, i want to add shadow to this view any suggestions?
return view
}()
let labelView: UILabel = {
let label = UILabel()
label.textColor = UIColor.black // -- this property doesn't reflect
label.font = UIFont.boldSystemFont(ofSize: 16) // -- this property doesn't reflect
return label
}()
func setUpCell() {
//-- Also tried to set properties here but no luck
//backgroundColor = UIColor.yellow
//labelView.textColor = UIColor.black
addSubview(cellView)
cellView.addSubview(labelView)
//cellView.backgroundColor = .green
}
}
我也想为这个新的自定义单元格添加约束。
尝试使用 contentView.addSubview(cellView)
而不是 addSubview(celliIew)
因为你想使用自动布局约束,确保你设置 cellView. translatesAutoResizingMaskIntoConstraints = false
(标签视图相同)
然后就可以开始了
NSLayoutConstraints.activate([
cellView.topAnchor.constraint(equalTo: contentView.topAnchor),
cellView.bottomAnchor.constraint(equalTo: contentView.bottomAnchor),
cellView.leadingAnchor.constraint(equalTo: contentView.leadingAnchor),
cellView.trailingAnchor.constraint(equalTo: contentView.trailingAnchor),
... Setup label constraints ...
)]
无法为 table 视图的自定义单元格设置属性。 此外,无法在 cellForRowAt 函数中为自定义单元格赋值。 我正在使用 swift 5 和 xcode 10.2
import UIKit
class ContainerViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
let CellId = "CellId"
let tableView : UITableView = {
let tv = UITableView()
tv.allowsSelection = false
tv.separatorStyle = .none
return tv
}()
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: CellId, for: indexPath) as! Cell
//cell.labelView.textColor = .red -- tried to set color here
cell.labelView.text = "Label \(indexPath.row)" // this code doesn't seems to work
return cell
}
}
//- Custom Cell Class
class Cell: UITableViewCell{
let cellView : UIView = {
let view = UIView()
view.backgroundColor = UIColor.red // -- this property doesn't reflect. Also, i want to add shadow to this view any suggestions?
return view
}()
let labelView: UILabel = {
let label = UILabel()
label.textColor = UIColor.black // -- this property doesn't reflect
label.font = UIFont.boldSystemFont(ofSize: 16) // -- this property doesn't reflect
return label
}()
func setUpCell() {
//-- Also tried to set properties here but no luck
//backgroundColor = UIColor.yellow
//labelView.textColor = UIColor.black
addSubview(cellView)
cellView.addSubview(labelView)
//cellView.backgroundColor = .green
}
}
我也想为这个新的自定义单元格添加约束。
尝试使用 contentView.addSubview(cellView)
而不是 addSubview(celliIew)
因为你想使用自动布局约束,确保你设置 cellView. translatesAutoResizingMaskIntoConstraints = false
(标签视图相同)
然后就可以开始了
NSLayoutConstraints.activate([
cellView.topAnchor.constraint(equalTo: contentView.topAnchor),
cellView.bottomAnchor.constraint(equalTo: contentView.bottomAnchor),
cellView.leadingAnchor.constraint(equalTo: contentView.leadingAnchor),
cellView.trailingAnchor.constraint(equalTo: contentView.trailingAnchor),
... Setup label constraints ...
)]