Table View Cell getting deselected after first tap. - ios

Question

Gif depicting that :
When user selecting table view cell for first time(checkbox ticked first time) , cell getting selected but after that it is deselected automatically and nothing happens when i am tapping second time.
But when i am tapping third time cell getting selected properly and on 4th tap it is deselecting properly and so on for 5th , 6th time onwards.
My didSelectRowAt() method looks like this :
func expandableTableView(_ expandableTableView: LUExpandableTableView, didSelectRowAt indexPath: IndexPath) {
let cell = expandableTableView.cellForRow(at: indexPath) as! FilterTableCell
let dictKey : String = FilterKeysMapping[FilterKeysFront.object(at: indexPath.section) as! String]!
if(self.FilterDictAPI[dictKey] == nil){
self.FilterDictAPI[dictKey] = [indexPath.row: self.FilterValueArray.object(at: indexPath.row)]
}
else{
self.FilterDictAPI[dictKey]![indexPath.row] = self.FilterValueArray.object(at: indexPath.row)
}
self.expandableTableView.beginUpdates()
cell.button.isSelected = true
self.expandableTableView.reloadRows(at: [indexPath], with: .automatic)
self.expandableTableView.endUpdates()
expandableTableView.selectRow(at: indexPath, animated: true, scrollPosition: .none)
}
didDeselectRowAt() method is like this :
func expandableTableView(_ expandableTableView: LUExpandableTableView, didDeselectRowAt indexPath: IndexPath) {
print("Did Deselect Cell at section \(indexPath.section) row \(indexPath.row)")
let cell = expandableTableView.cellForRow(at: indexPath) as! FilterTableCell
cell.button.isSelected = false
let dictKey : String = FilterKeysMapping[FilterKeysFront.object(at: indexPath.section) as! String]!
if(self.FilterDictAPI[dictKey] != nil){
self.FilterDictAPI[dictKey]?.removeValue(forKey: indexPath.row)
}
print("dict after removing values : \(self.FilterDictAPI)")
}
cellForRowAt() method is :
func expandableTableView(_ expandableTableView: LUExpandableTableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
guard let cell = expandableTableView.dequeueReusableCell(withIdentifier: cellReuseIdentifier) as? FilterTableCell else {
assertionFailure("Cell shouldn't be nil")
return UITableViewCell()
}
cell.selectionStyle = UITableViewCellSelectionStyle.none
cell.label.text = "\(self.FilterValueArray.object(at: indexPath.row))" + " (" + "\(self.FilterCountArray.object(at: indexPath.row))" + ")"
return cell
}
Table View Cell is :
class FilterTableCell: UITableViewCell {
let label = UILabel()
let button = UIButton()
var check = Bool()
// MARK: - Init
override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
super.init(style: style, reuseIdentifier: reuseIdentifier)
contentView.addSubview(label)
contentView.addSubview(button)
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
// MARK: - Base Class Overrides
override func layoutSubviews() {
super.layoutSubviews()
label.frame = CGRect(x: 42, y: 0, width: contentView.frame.width-42, height: contentView.frame.height)
self.label.font = UIFont(name: "PlayfairDisplay-Regular", size: 18)
button.frame = CGRect(x:10, y: contentView.frame.height/2-8, width: 16, height: 16)
button.setImage(UIImage(named: "CheckboxUnchecked"), for: .normal)
button.setImage(UIImage(named: "CheckboxChecked"), for: .selected)
button.setImage(UIImage(named: "CheckboxUnchecked"), for: .highlighted)
}
}
Issue as mentioned is only this : After first tap it is deselecting automatically.

Answer 1

What's exactly happening is in didSelectRowAt when you reload that indexPath, that cell is deselected automatically and didDeselectRowAt method is called where cell.button.isSelected = false removes the checkmark.
So, to fix this comment out the below lines in didSelectRowAt method.
self.expandableTableView.beginUpdates()
self.expandableTableView.reloadRows(at: [indexPath], with: .automatic)
self.expandableTableView.endUpdates()
Also, reset button's selected state in cell's prepareForReuse() method. This will fix the undefined behaviour where checkbox is selected randomly or after first or second taps.
override func prepareForReuse() {
super.prepareForReuse()
button.isSelected = false
}