How to get the centre of the view

Question

I'm trying to get the center of my view by using the code below, the class being used is from the DTIActivityIndicatorView which add a custom activity indicator to the view.

var midX = CGRectGetMidX(self.view.bounds)
var midY = CGRectGetMidY(self.view.bounds)

let topStoriesActivityIndicator: DTIActivityIndicatorView = DTIActivityIndicatorView(frame: CGRect(x: midX, y: midY, width:80.0, height:80.0))

But the code above is giving me the following result where the activity indicator isn't centered in the middle.

Answer 1

Swift 4 extension:

extension CGRect {
    var center: CGPoint { .init(x: midX, y: midY) }
}

let someRect = CGRect(x: 10, y: 10, width: 200, height: 40)

let theCenter = someRect.center // {x 110 y 30}

Answer 2

Swift 3

The following code represent the center of Screen:

let frameSize: CGPoint = CGPoint(x: UIScreen.main.bounds.size.width*0.5,y: UIScreen.main.bounds.size.height*0.5)

Hope this help!

Answer 3

Bounds can be different than how size of the view appears. Try using frame and if it doesn't work try using bounds.

var midX = CGRectGetMidX(self.view.bounds)
var midY = CGRectGetMidY(self.view.bounds)

Also since you are positioning your view in the center and then adding width and height, it appears off as well. You should set the frame like this

let topStoriesActivityIndicator: DTIActivityIndicatorView = DTIActivityIndicatorView(frame: CGRect(x: midX - 80.0, y: midY - 80.0, width:80.0, height:80.0))