CGRectMake，CGPointMake，CGSizeMake，CGRectZero，CGPointZero在Swift中不可用 [英] CGRectMake, CGPointMake, CGSizeMake, CGRectZero, CGPointZero is unavailable in Swift

问题描述

将代码转换为最新的swift 3.0之后，系统显示此错误.

After converting code to latest swift 3.0 I am shown this error.

还请告诉我CGSize = CGSizeMake(0,0)

static var frameAtStartOfPan: CGRect = CGRectZero
static var startPointOfPan: CGPoint = CGPointZero

这也不可用.

推荐答案

CGRect可以使用CGPoint或CGSize的实例简单创建，如下所示.

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))

或者如果我们要在CGFloat或Double或Int中指定每个值，则可以使用此方法.

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可以这样创建.

 let point = CGPoint(x: 0,y :0) // CGFloat, Double, Int

CGSize可以这样创建.

let size = CGSize(width: 100, height: 100) // CGFloat, Double, Int

也可以将大小和点都指定为0，这样可以完成操作.

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替换为CGRect.zero& Swift 3.0中的CGPoint.zero.

CGRectZero & CGPointZero replaced with CGRect.zero & CGPoint.zero in Swift 3.0.

这篇关于CGRectMake，CGPointMake，CGSizeMake，CGRectZero，CGPointZero在Swift中不可用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！