Trying to access height property in Custom UiView, running into "height is a get-only property" error - ios

Question

I created a custom UIView (DesignView) within a custom TableViewCell (TableViewCell) and I am trying to access the height property within the UIView so that I can grow it/shrink it when the TableViewCellexpands/shrinks.
I am running into the error of
cannot assign to property: 'height' is a get-only property
However after researching similar questions to mines none of the solutions/explanations seems to work.
The DesignView is within the TableViewCell and I am trying to accomplish my goal of making the DesignView "grow" when the cell expands in my main ViewController.
Here is my code for the custom UIView:
#IBDesignable class DesignView : UIView {
var newValue : CGFloat = 0
#IBInspectable var cornerRadius : CGFloat = 0
#IBInspectable var shadowColor : UIColor? = UIColor.black
#IBInspectable var shadowOffSetWidth : Int = 0
#IBInspectable var shadowOffSetHeight : Int = 1
#IBInspectable var shadowOpacity : Float = 0.2
override func layoutSubviews() {
layer.cornerRadius = cornerRadius/2
layer.shadowColor = shadowColor?.cgColor
layer.shadowOffset = CGSize(width: shadowOffSetWidth, height: shadowOffSetHeight)
let shadowPath = UIBezierPath(roundedRect: bounds, cornerRadius: cornerRadius)
layer.shadowPath = shadowPath.cgPath
layer.shadowOpacity = shadowOpacity
}
}
Here is the code for my custom TableViewCell:
class TableViewCell: UITableViewCell {
#IBOutlet var nameLabel: UILabel!
#IBOutlet var phoneNumberLabel: UILabel!
#IBOutlet var addressLabel: UILabel!
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// Configure the view for the selected state
}
}
Here is the code for my ViewController that contains the expand/shrink function I mentioned earlier:
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
var count : Int?
if tableView == self.tableView {
count = 3
} else if tableView == self.pantryTableView {
count = 7
} else if tableView == self.foodTableView {
count = 3
}
return count!
}
var selectedIndexPath : IndexPath? = nil
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
print("didSelectRowAtIndexPath was called")
var cell = tableView.cellForRow(at: indexPath) as! TableViewCell
switch selectedIndexPath {
case nil:
selectedIndexPath = indexPath
default:
if selectedIndexPath! == indexPath {
selectedIndexPath == nil
} else {
selectedIndexPath = indexPath
}
}
tableView.reloadRows(at: [indexPath], with: UITableViewRowAnimation.automatic)
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath, _ sender: TableViewCell) -> CGFloat {
let smallHeight : CGFloat = 70
let expandedHeight : CGFloat = 180
let ip = indexPath
if selectedIndexPath != nil {
if ip == selectedIndexPath! {
return expandedHeight
} else {
return smallHeight
}
} else {
return smallHeight
}
}
Here is where the error is occurring in my TableViewCell:
class TableViewCell: UITableViewCell {
#IBOutlet var designView: DesignView!
var height : CGFloat {
get {
designView.bounds.height
}
set {
return designView.bounds.height = newValue
}
}
I'll also attach a screenshot so you can see what I'm trying to do/where the error is occurring:

Answer 1

let view = UIView(frame: .zero)
// You can only **access** the height as it is a get-only property
print(view.frame.height)
// You can **access** the height and **modify** it
view.frame.size.height = 50.0
You shouldn't need to increase the height if they are properly pinned to the edges of the Table view cell's content view.

Answer 2

In your code, designView.bounds returns a CGRect which is a struct. It doesn't have any property as height. Look the definition of CGRect below:
public struct CGRect {
public var origin: CGPoint
public var size: CGSize
public init()
public init(origin: CGPoint, size: CGSize)
}
Obviously, CGRect does not have any accessible property as height. This is the reason for which you are getting error.. You should get height from size property. There is also a return missing in get method. Replace lines of as below:
var height : CGFloat {
get {
return designView.bounds.size.height
}
set {
return designView.bounds.size.height = newValue
}
}
Hope, it will work!