How can I set UITableView cell height programmatically in Swift? - ios

Question

How to set view height programmatically? I have this code:
cell.viewMain.frame = CGRectMake(cell.viewMain.frame.origin.x, cell.viewMain.frame.origin.y, cell.viewMain.frame.size.width, 65.0)
But that is not working.
UPDATE:
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("updateCell", forIndexPath: indexPath) as! UpdateCell
if self.data[indexPath.row] == "b" {
tbUpdate.rowHeight = 85
cell.viewMain.frame = CGRectMake(cell.viewMain.frame.origin.x, cell.viewMain.frame.origin.y, cell.viewMain.frame.size.width, 65.0)
}else{
tbUpdate.rowHeight = 220
cell.viewMain.frame = CGRectMake(cell.viewMain.frame.origin.x, cell.viewMain.frame.origin.y, cell.viewMain.frame.size.width, 200.0)
}
return cell
}

Answer 1

TableView cells have their height set by the table view.
You need to implement UITableViewDelegate tableView:heightForRowAtIndexPath:.

Answer 2

first, rowHeight changes the height of all rows in your table. if you want specific height for specific rows, implement tableView:heightForRowAtIndexPath: method. remove tbUpdate.rowHeight in your code first.

Answer 3

override func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
var cellHeight:CGFloat = CGFloat()
if indexPath.row % 2 == 0 {
cellHeight = 20
}
else if indexPath.row % 2 != 0 {
cellHeight = 50
}
return cellHeight
}

Answer 4

You can try using autolayout to create a height constrait and then connect the constraint to an outlet. Then set the constant for that constraint,
var y: Float
if x==0{ //some condition
y = 10
}else if x==1{ //some condition
y = 20
}
cell.viewMainHeightConstraint.constant = y
cell.view.layoutIfNeeded()
Put this in your cellForRowAtIndexPath
Edit : I misinterpreted the question as asking for another view within the cellView, if so the delegate method heightForRowAtIndexPath is indeed correct as stated in the above answer.
An example:
func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat
{
if x == 0{
return 100.0 //Choose your custom row height
} else {
return 50
}
}

Answer 5

func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
var height:CGFloat = CGFloat()
if indexPath.row == 0 {
height = 80
}
else if indexPath.row == 1 {
height = self.view.frame.size.height - 44 - 64 // 44 is a tab bar height and 64 is navigationbar height.
print(height)
}
return height
}