EXC_BAD_ACCESS UITable set tableHeaderView in numberOfRowsInSection - ios

Question

I'm trying to set tableHeaderView in numberOfRowsInSection. But I'm getting EXC_BAD_ACCESS with no message in the output console.
Below is my numberOfRowsInSection function.
// number of rows in table view
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
//SECTION 1
if self.titles.count == 0 {
self.noBookmarkView.alpha = 1.0
}
else {
self.noBookmarkView.alpha = 0.0
}
//=====================================
//SECTION 2
if self.idsb.count != self.ids.count {
self.bookmarkTableView.tableHeaderView = self.filteredView
}
else {
self.bookmarkTableView.tableHeaderView = nil
}
//=====================================
return self.titles.count
}
And below is my viewDidLoad where I initialize filteredView
#IBOutlet weak var noBookmarkView: UIView!
var filteredView: UIView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
filteredView = UIView.init(frame: CGRect.init(x: 0, y: 0, width: bookmarkTableView.frame.width, height: 25))
filteredView.backgroundColor = UIColor.init(red: 0.4, green: 0.4, blue: 0.71, alpha: 1.0)
let label: UILabel = UILabel.init(frame: filteredView.frame)
label.text = "Filtered"
label.font = UIFont.init(name: "System", size: 14.0)
label.adjustsFontSizeToFitWidth = true
filteredView.addSubview(label)
}
So before I added filteredView it worked perfectly with the noBookmarkView.
Now it has the error EXC_BAD_ACCESS on self.noBookmarkView.alpha = 0.0. If I comment out SECTION 2 it works without errors. If I comment out SECTION 1 it then has EXC_BAD_ACCESS on line self.bookmarkTableView.tableHeaderView = nil.
I don't understand why it would fail on self.noBookmarkView.alpha = 0.0 when it seems like SECTION 2 is what is causing the problem.
How can I fix this?

Answer 1

You should provide header via the dataSource of the UITableView:
func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
return self.filteredView
}
func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
return 25
}