我尝试在UITableView中为单元格的编辑模式设置自定义编辑视图和动画,因此我创建了一个自定义类,将其子视图添加到其中并在setEditing中动画一些帧更改(_:animated :)功能。我还覆盖了layoutSubviews()函数,我还提供了新的帧值:
class TableViewCell: UITableViewCell {
override func layoutSubviews() {
self.deleteButtonView.frame.origin.x = self.viewPosition - 80
self.disclosureButtonView.frame.origin.x = self.contentView.bounds.width - (self.viewPosition / 2)
self.containerView.frame.origin.x = self.viewPosition
self.alarmImageNameView.alpha = self.viewAlpha
self.alarmImageDateView.alpha = self.viewAlpha
self.alarmSwitchView.alpha = self.viewAlpha
self.deleteButton.transform = self.buttonTransform
super.layoutSubviews()
}
override func setEditing(_ editing: Bool, animated: Bool) {
self.viewPosition = editing ? 80 : 0
self.viewAlpha = editing ? 0 : 1
self.buttonTransform = editing ? CGAffineTransform(rotationAngle: 90 * (.pi / 180)) : .identity
let layoutChanges = {
self.deleteButtonView.frame.origin.x = self.viewPosition - 80
self.disclosureButtonView.frame.origin.x = self.contentView.bounds.width - (self.viewPosition / 2)
self.containerView.frame.origin.x = self.viewPosition
self.alarmImageNameView.alpha = self.viewAlpha
self.alarmImageDateView.alpha = self.viewAlpha
self.alarmSwitchView.alpha = self.viewAlpha
self.deleteButton.transform = self.buttonTransform
}
if animated {
UIView.animate(withDuration: 0.5, delay: 0, options: [.curveEaseInOut], animations: layoutChanges, completion: nil)
} else {
layoutChanges()
}
super.setEditing(editing, animated: animated)
}
}
它工作得非常好,当我滚动时,但是如果我滚动到最底部,突然self.containerView
似乎忽略了frame.origin.x值,layoutSubviews()函数提供了: YouTube-video of the animations
我不知道,为什么它不起作用,如果我在layoutSubviews()函数中设置断点,它甚至会在最后一个单元格处停止,如果我打印出self.containerView.frame.origin.x
的值,它也是正确的。
修改: 如果这很重要,请在这里实现cellForRowAtIndexPath:
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let alarmProperties = self.alarms[indexPath.row]
let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath) as! TableViewCell
cell.delegate = self
cell.selectionStyle = .none
cell.alarmTimeLabel.text = "\(alarmProperties.hour):\(alarmProperties.minute)"
cell.alarmSwitch.isOn = alarmProperties.isActive
return cell
}