Cell subviews constraints changing programmatically in CellForRowAtIndex

Question

I have a UITableViewcustom cell. It has a UIViewand a UIButton I want to change this view height constraint and the button's top constraint programmatically in my `cellForRowAtIndex. So Inside this im doing like this.

if(myintime2 == "00:00" && myoutTime2 == "00:00"  )
        {
            cell.btnIntime2.setTitle(myintime2, for: .normal)
            cell.btnOutTime2.setTitle(myoutTime2, for: .normal)

            cell.btnOutTime2.isHidden=true
            cell.btnIntime2.isHidden=true
            cell.customViewHeightConstraint.constant = 111
            cell.customBtnIn1Top.constant = 111/2


        }

        else if (myintime2 == "N/A" && myoutTime2 == "N/A")
        {
            cell.btnIntime2.setTitle(myintime2, for: .normal)
            cell.btnOutTime2.setTitle(myoutTime2, for: .normal)

            cell.btnOutTime2.isHidden=true
            cell.btnIntime2.isHidden=true
            cell.customViewHeightConstraint.constant = 111
            cell.customBtnIn1Top.constant = 111/2

        }


        else
        {
            cell.btnIntime2.setTitle(myintime2, for: .normal)
            cell.btnOutTime2.setTitle(myoutTime2, for: .normal)
            cell.customViewHeightConstraint.constant = 222
            cell.customBtnIn1Top.constant = 10
            cell.btnOutTime2.isHidden=false
            cell.btnIntime2.isHidden=false

        }

But some cells the height is wrong, please help me

What exactly do you mean by "some cells the height is wrong"? What is the expected result, what happens instead? — mag_zbc, Jul 18 '17 at 14:07
@mag_zbc I have to check 2 conditions.. if my in time2 is available I want to increase the height of the cell and increase the button's top constraint value. But when my condition doesnt satisfy cells are getting increased and top also getting increased. — user1960169, Jul 18 '17 at 14:09
@mag_zbc but not for all cells, this happens only for few cells. randomly — user1960169, Jul 18 '17 at 14:10
@mag_zbc And also when I scroll the tableview, then some correct cells also getting wrong size — user1960169, Jul 18 '17 at 14:13
it would be better set the height in method: tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat — Adriana Carelli, Jul 18 '17 at 16:12

Adriana Carelli · Answer 1 · 2017-07-25T16:37:39.757

0

 func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {

         if(myintime2 == "00:00" && myoutTime2 == "00:00"  ){
                return 111
         }
        else if (myintime2 == "N/A" && myoutTime2 == "N/A")
        {
                return 111
         }else{
               return 222
         }

}

You can build multiple prototype cell by storyboard

Each type of cell creates it with a different height and with identifier different and not use constraints

Using Auto Layout in UITableView for dynamic cell layouts & variable row heights

edited Jul 25 '17 at 16:37

answered Jul 18 '17 at 16:16

Adriana Carelli

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You mean I don't need to set height constraint for my subview? – user1960169 Jul 18 '17 at 16:31
it is a tableview, is not necessary set height constraint because exists this method when set the height of cell – Adriana Carelli Jul 18 '17 at 16:50
I changed it in your way. But now all the cells takes 308 which is my original cell size. :( – user1960169 Jul 18 '17 at 17:41
I changed inside heightforrowatIndex now height is changing but I dont understand how to update constraints of subviews – user1960169 Jul 19 '17 at 01:22
I changed inside heightforrowatIndex now height is changing but I dont understand how to update constraints of subviews – user1960169 Jul 19 '17 at 01:22

Cell subviews constraints changing programmatically in CellForRowAtIndex

1 Answers1