在cellForRowAtIndexPath
中,我试图将开关选择和字符串传递给选择器函数,但无法传递。请提供帮助。
let pidName = "someString"
cell.switchSelection.tag = indexPath.row
cell.switchSelection.addTarget(self, action:
#selector(self.switchOperation(_:pid:)), for: .valueChanged)
在这里,我必须通过发送器和pidName
,但失败
@objc func switchOperation(_ sender: UISwitch, pid: Any){
let store = (sender).isOn
let settingTag = pid
}
正确的解决方案是将操作移动到您的单元格类中:
class MyCell: UITableViewCell {
@IBOutlet weak var switchSelection: UISwitch!
override func awakeFromNib() {
super.awakeFromNib()
switchSelection.addTarget(self, action: #selector(MyCell.action(_:)), for: .valueChanged)
}
func configure(switchAction: @escaping (Bool) -> Void) {
self.switchAction = switchAction
}
@objc func action(_ sender: UISwitch) {
switchAction(sender.isOn)
}
private var switchAction: (Bool) -> Void = { _ in }
}
现在,在您的表视图代理中,您可以执行以下操作:
let pidName = "someString"
cell.configure(switchAction: { [weak self] isOn in
let store = isOn
let settingTag = pid
}
或者你可以做:
let pidName = "someString"
cell.configure(switchAction: { [weak self] isOn in
self?.switchOperation(isOn: isOn, pid: pid)
}
@objc func switchOperation(isOn: Bool, pid: Any){
let store = isOn
let settingTag = pid
}
不能有另一个参数作为
cell.switchSelection.addTarget(self, action:
#selector(self.switchOperation(_:)), for: .valueChanged)
只发送一个与目标添加到的对象类型相同的参数
你需要将开关的标签someWhere设置为pid
,并像这个一样使用它
@objc func switchOperation(_ sender: UISwitch) {
print(sender.tag)
}