如何解决在 UICollectionview 中选择任何其他单元格时取消选择默认选定单元格
使用 UICollectionView 显示日历,我默认选择了今天的日期,并希望在选择任何其他日期时取消选择该日期。下面是我的代码:
func collectionView(_ collectionView: UICollectionView,cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CalenderCell",for: indexPath) as! CalenderCollectionViewCell
cell.lblDayName.text = arrCalendarDays[indexPath.item]
cell.lblDate.text = arrCalendarOnlyDate[indexPath.item]
if indexPath.item == 0 {
if !isTodayDate {
cell.isSelected = true
} else {
cell.isSelected = false
}
}
return cell
}
func collectionView(_ collectionView: UICollectionView,didSelectItemAt indexPath: IndexPath) {
isTodayDate = true
// Tried below code but not working
/* collectionViewWeekCalendar.indexPathsForSelectedItems?
.forEach {
self.collectionViewWeekCalendar.deselectItem(at: $0,animated: false) }
*/
let selectedCell:UICollectionViewCell = collectionViewWeekCalendar.cellForItem(at: indexPath)!
selectedCell.isSelected = true
}
func collectionView(_ collectionView: UICollectionView,diddeselectItemAt indexPath: IndexPath) {
let selectedCell:UICollectionViewCell = collectionViewWeekCalendar.cellForItem(at: indexPath as IndexPath)!
selectedCell.isSelected = false
}
问题是,在选择任何其他日期时,今天的选定日期不会取消选择。请指导。
解决方法
最简单的方法(我认为) 使用选定的索引
func collectionView(_ collectionView: UICollectionView,cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CalenderCell",for: indexPath) as! CalenderCollectionViewCell
cell.lblDayName.text = arrCalendarDays[indexPath.item]
cell.lblDate.text = arrCalendarOnlyDate[indexPath.item]
if sellectedIndex == indexPath {
cell.isSelected = true
} else {
cell.isSelected = false
}
return cell
}
func collectionView(_ collectionView: UICollectionView,didSelectItemAt indexPath: IndexPath) {
selectedIndex = indexPath
collectionView.reloadData()
}
在开始时,
set selectedIndex = today date Index
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