Redraw view inside of self.view on viewDidLoad() in swift? - swift

Question

I'm working on an app that has a view that is positioned in various places depending on the screen size of it. The size depends on the device. I chose the size of the iPhone 5S. My app will run on an iPad.
See how was the Swift code:
class Main: UIViewController {
#IBOutlet var viewRect: UIView!
let DeviceHeigth:CGFloat = 1136 / 2
let DeviceWith:CGFloat = 640 / 2
override func viewDidLoad() {
super.viewDidLoad()
calcviewRectViewInit()
}
func calcviewRectViewInit(){
let space:CGFloat = 40
var frame: CGRect = viewRect.frame
frame.size.height = DeviceHeigth
frame.size.width = DeviceWith
frame.origin = CGPoint(x: toolView.frame.width + space, y: space)
viewRect.frame = frame
}
When you start, the Rect view is not positioned in the sizes and positions - by code. The viewDidLoad is not redrawn the view at runtime.
My question is: How can redraw the view (viewRect) when starting the app?

Answer 1

You should use the superview's frame as a reference.
For example:
var frame: CGRect = viewRect.frame
frame.size.height = self.view.frame.height / 2
frame.size.width = self.view.frame.width / 2
I referenced self.view instead of just view for clarity. UIViewController has the view property. This can be used where you are attempting to reference the device size.
You should also make sure you have the frame set correctly for the toolView prior to building this frame.
Additionally, I would recommend looking at Auto Layout for this particular problem. It was designed to aid in supporting user interfaces on various size screens. Below is a link to more information about it.
https://developer.apple.com/library/ios/documentation/UserExperience/Conceptual/AutolayoutPG/index.html