I have a gap that is created between two sections and I don’t know how to get rid of it.
I have 4 sections:
- Section 1(Lifelist),
- 2(Dawn chorus), and
- 3(Search)
- 4(Birds)
Section 1, 2, and 3 all have (same type) headers, but section 4 doesn’t. Section 1, 2, and 4 have footers, but 3 doesn’t.
On app load, there is a gap created between section 3 and 4 where there is no header & footer. I’ve tried to prevent this through the following code:
func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
let headerIdentifier = HomeViewSectionHeaderView.reuseIdentifier
guard let view = tableView.dequeueReusableHeaderFooterView(
withIdentifier: headerIdentifier)
as? HomeViewSectionHeaderView
else {
return nil
}
if !sections[section].showSectionHeader {
return nil
}
view.textLabel?.text = sections[section].title
return view
}
func tableView(_ tableView: UITableView, viewForFooterInSection section: Int) -> UIView? {
guard let view = tableView.dequeueReusableHeaderFooterView(
withIdentifier: HomeViewSectionFooterView.reuseIdentifier)
as? HomeViewSectionFooterView
else {
return nil
}
if !sections[section].showSectionFooter {
return nil
}
return view
}
func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
if (sections[section].showSectionHeader){
return 50.0
}
return 0.0
}
func tableView(_ tableView: UITableView, estimatedHeightForHeaderInSection section: Int) -> CGFloat {
if (sections[section].showSectionHeader){
return 50.0
}
return 0.0
}
func tableView(_ tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
if (sections[section].showSectionFooter){
return 8.0
}
return 0.0
}
func tableView(_ tableView: UITableView, estimatedHeightForFooterInSection section: Int) -> CGFloat {
if (sections[section].showSectionFooter){
return 8.0
}
return 0.0
}
On the view hierarchy we can clearly see it is a gap without any elements:
The full screen looks like this:
>Solution :
Instead of returning 0 to heightForFooterInSection and heightForHeaderInSection try returning a non zero value (close to 0 of course) like 0.001 or .leastNormalMagnitude or .leastNonzeroMagnitude
func tableView(_ tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
if (sections[section].showSectionFooter){
return 8.0
}
return .leastNormalMagnitude //or you can use .leastNonzeroMagnitude or return a non zero value like 0.001
}
func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
if (sections[section].showSectionHeader){
return 50.0
}
return .leastNormalMagnitude //or you can use .leastNonzeroMagnitude or return a non zero value like 0.001
}