UITableViewDelegate methods not called after Swift 3.0 and Xcode 8 migration
ios, swift, swift3, uitableview
Solution
After I checked your sample project:
You didn't did anything wrong, but referring to `viewForFooterInSection`, it will not get called until you implement `heightForFooterInSection` method:
func tableView(_ tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
return 50 // for example
}
Similar Cases:
No implementing for `heightForHeaderInSection` ==> No calling for `viewForHeaderInSection` even if it's implemented.
Returning `numberOfRowsInSection` as zero ==> No calling for `cellForRowAt` even if it's implemented.
Additional Note: you don't have to add `tableView.dataSource = self` and `tableView.delegate = self` in `viewDidLoad()`, they have been set in the interface Builder.
Problem
After migrating my codebase from Swift 2.2 to Swift 3.0, I noticed that my `UITableView` footer did not show up. It turns out that none of my `UITableViewDelegate` methods get called (ex: `func tableView(_ tableView: UITableView, viewForFooterInSection section: Int) -> UIView?`). Interestingly, the `UITableViewDataSource` methods are being called and the table is being populated. I have set the parent view controller to be the table's `delegate` and `dataSource`. To illustrate the problem, I have created a sample Swift 3.0 project tailored to match my existing codebase as much as possible. Maybe something changed in Swift 3/Xcode 8 that I am not aware of or I might be missing something really obvious. Thank you for your help!