CODEWITHSUNDEEP
iosswiftuitableviewswift3
Pyae Phyoe Shein
Pyae Phyoe Shein

Reputation: 13787

I don't know why viewForHeaderInSection is not called in swift3

I don't know why viewForHeaderInSection is not called in swift3. I've added heightForHeaderInSection in UITableView but not called unfortunately. Please help me to check how to fixed it.

enter image description here

func numberOfSectionsInTableView(_ tableView: UITableView) -> Int {
    return 3
}

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    switch (section) {
    case 0:
        return homeStrs.count
    case 1:
        return accountStrs.count
    case 2:
        return otherStrs.count
    default:
        return otherStrs.count
    }
}

func tableView(_ tableView: UITableView, cellForRowAtIndexPath indexPath: IndexPath) -> UITableViewCell {
    let cell = menuTable.dequeueReusableCell(withIdentifier: "MenuCell", for: indexPath) as! MenuCell
    cell.layoutMargins = UIEdgeInsets.zero;
    cell.lbNoti.isHidden = true
    switch ((indexPath as NSIndexPath).section) {
    case 0:
        cell.lbMenuTitle?.text = homeStrs[(indexPath as NSIndexPath).row]
        cell.imgIcon.image = UIImage (named: homeImgStrs[(indexPath as NSIndexPath).row])
    case 1:
        cell.lbMenuTitle?.text = accountStrs[(indexPath as NSIndexPath).row]
        cell.imgIcon.image = UIImage (named: accountImgStrs[(indexPath as NSIndexPath).row])
    case 2:
        cell.lbMenuTitle?.text = otherStrs[(indexPath as NSIndexPath).row]
        cell.imgIcon.image = UIImage (named: otherImgStrs[(indexPath as NSIndexPath).row])
    default:
        cell.lbMenuTitle?.text = "Other"
    }

    return cell
}

func tableView(tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
    return 40
}

func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
    switch (section) {
    case 1:
        let headerView = UIView(frame: CGRect(x: 0, y: 0, width: self.menuTable.frame.size.width, height: 30))
        let menuHeaderLabel = UILabel(frame: CGRect(x: 20, y: 0, width: self.menuTable.frame.size.width, height: 28))
        menuHeaderLabel.text = "Account Settings"
        headerView.addSubview(menuHeaderLabel)
        return headerView
    case 2:
        let headerView = UIView(frame: CGRect(x: 0, y: 0, width: self.menuTable.frame.size.width, height: 30))
        let menuHeaderLabel = UILabel(frame: CGRect(x: 20, y: 0, width: self.menuTable.frame.size.width, height: 28))
        menuHeaderLabel.text = "Others"
        headerView.addSubview(menuHeaderLabel)
        return headerView
    default:
        let headerView = UIView(frame: CGRect(x: 0, y: 0, width: self.menuTable.frame.size.width, height: 0))
        return headerView
    }
}

Upvotes: 7

Views: 8247

Answers (4)

Najam
Najam

Reputation: 1159

Same issue occured with me that's because tableview find difficulties in calculating height for header but as I was using automatic height calculation from xCode 9, I cannot give any explicit height value as mentioned above. After some experimentation I got solution, we have to override this method as, 

-(CGFloat)tableView:(UITableView *)tableView 
         estimatedHeightForHeaderInSection:(NSInteger)section
{
      return 44.0f;
}

Although I have checked both options

  1. Automatic Height Calculation
  2. Automatic Estimated Height Calculation

from storyboard as apple says, but still I got this weird error.

Please Note: This Error was shown only on IOS-10 version not on IOS-11 version. Maybe it's a bug from xCode. Thanks

Upvotes: 1

Sunkanmi Akintoye
Sunkanmi Akintoye

Reputation: 83

In my case, adding self.tableView.sectionHeaderHeight = 80.0 to viewDidLoad did the magic.

Upvotes: 1

Giggs
Giggs

Reputation: 1039

If someone else is having the same issue... Adding this line in viewDidLoad called the delegate methods therefore made the header appear:

self.tableView.estimatedSectionHeaderHeight = 80

Upvotes: 17

Ken Nguyen
Ken Nguyen

Reputation: 106

You sure you've added UITableViewDelegate, UITableViewDataSource in your ViewController Class

Upvotes: 8

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