CGRectMake, CGPointMake, CGSizeMake, CGRectZero, CGPointZero is unavailable in Swift - uikit

Question

After converting code to latest swift 3.0 I am shown this error.
Also tell me solution for CGSize = CGSizeMake(0,0)
static var frameAtStartOfPan: CGRect = CGRectZero
static var startPointOfPan: CGPoint = CGPointZero
Which is also unavailable.

Answer 1

CGRect Can be simply created using an instance of a CGPoint or CGSize, thats given below.
let rect = CGRect(origin: CGPoint(x: 0,y :0), size: CGSize(width: 100, height: 100))
// Or
let rect = CGRect(origin: .zero, size: CGSize(width: 100, height: 100))
Or if we want to specify each value in CGFloat or Double or Int, we can use this method.
let rect = CGRect(x: 0, y: 0, width: 100, height: 100) // CGFloat, Double, Int
CGPoint Can be created like this.
let point = CGPoint(x: 0,y :0) // CGFloat, Double, Int
CGSize Can be created like this.
let size = CGSize(width: 100, height: 100) // CGFloat, Double, Int
Also size and point with 0 as the values, it can be done like this.
let size = CGSize.zero // width = 0, height = 0
let point = CGPoint.zero // x = 0, y = 0, equal to CGPointZero
let rect = CGRect.zero // equal to CGRectZero
CGRectZero & CGPointZero replaced with CGRect.zero & CGPoint.zero in Swift 3.0.

Answer 2

Quick fix for CGRectMake , CGPointMake, CGSizeMake in Swift3 & iOS10
Add these extensions :
extension CGRect{
init(_ x:CGFloat,_ y:CGFloat,_ width:CGFloat,_ height:CGFloat) {
self.init(x:x,y:y,width:width,height:height)
}
}
extension CGSize{
init(_ width:CGFloat,_ height:CGFloat) {
self.init(width:width,height:height)
}
}
extension CGPoint{
init(_ x:CGFloat,_ y:CGFloat) {
self.init(x:x,y:y)
}
}
Then go to "Find and Replace in Workspace"
Find CGRectMake , CGPointMake, CGSizeMake and Replace them with CGRect , CGPoint, CGSize
These steps might save all the time as Xcode right now doesn't give us quick conversion from Swift 2+ to Swift 3

Answer 3

In Swift 3, you can simply use CGPoint.zero or CGRect.zero in place of CGRectZero or CGPointZero.
However, in Swift 4, CGRect.zero and 'CGPoint.zero' will work

Answer 4

If you want to use them as in swift 2, you can use these funcs:
For CGRectMake:
func CGRectMake(_ x: CGFloat, _ y: CGFloat, _ width: CGFloat, _ height: CGFloat) -> CGRect {
return CGRect(x: x, y: y, width: width, height: height)
}
For CGPointMake:
func CGPointMake(_ x: CGFloat, _ y: CGFloat) -> CGPoint {
return CGPoint(x: x, y: y)
}
For CGSizeMake:
func CGSizeMake(_ width: CGFloat, _ height: CGFloat) -> CGSize {
return CGSize(width: width, height: height)
}
Just put them outside any class and it should work. (Works for me at least)

Answer 5

The structures as well as all other symbols in Core Graphics and other APIs have become cleaner and also include parameter names.
https://developer.apple.com/reference/coregraphics#symbols
CGRect(x: Int, y: Int, width: Int, height: Int)
CGVector(dx: Int, dy: Int)
CGPoint(x: Double, y: Double)
CGSize(width: Int, height: Int)
CGPoint Example:
let newPoint = stackMid.convert(CGPoint(x: -10, y: 10), to: self)
CGVector Example:
self.physicsWorld.gravity = CGVector(dx: 0, dy: gravity)
CGSize Example:
hero.physicsBody = SKPhysicsBody(rectangleOf: CGSize(width: 16, height: 18))
CGRect Example:
let back = SKShapeNode(rect: CGRect(x: 0-120, y: 1024-200-30, width: 240, height: 140), cornerRadius: 20)
Apple Blog
Swift syntax and API renaming changes in Swift 3 make the language feel more natural, and provide an even more Swift-y experience when calling Cocoa frameworks. Popular frameworks Core Graphics and Grand Central Dispatch have new, much cleaner interfaces in Swift.

Answer 6

Swift 3 Bonus: Why didn't anyone mention the short form?
CGRect(origin: .zero, size: size)
.zero instead of CGPoint.zero
When the type is defined, you can safely omit it.

Answer 7

Try the following:
var myToolBar = UIToolbar.init(frame: CGRect.init(x: 0, y: 0, width: 320, height: 44))
This is for the swift's latest version

Answer 8

You can use this with replacement of CGRectZero
CGRect.zero

Answer 9

For CGSize
CGSize(width: self.view.frame.width * 3, height: self.view.frame.size.height)

Answer 10

Instead of CGSizeMake add CGSize it will work.
CGSizeMake is used in objective c.
you don't want to use make with swift

Answer 11

In Swift 4 it works like below
collectionView.setContentOffset(CGPoint.zero, animated: true)