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 后,我看到了这个错误.
After converting code to latest swift 3.0 I am shown this error.
还告诉我 CGSize = CGSizeMake(0,0)
的解决方案
Also tell me solution for CGSize = CGSizeMake(0,0)
static var frameAtStartOfPan: CGRect = CGRectZero
static var startPointOfPan: CGPoint = CGPointZero
这也是不可用的.
推荐答案
CGRect
可以使用 CGPoint
或 CGSize
的实例简单地创建>,下面给出.
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))
或者如果我们想在CGFloat
或Double
或Int
中指定每个值,我们可以使用这个方法.
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
同样大小和点以0为值,可以这样做.
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
.
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