Question

在升级到Swift 3和Xcode 8之前，我的StyleKit项目运行得非常好。这是我的一些颜色代码：

   //// Color Declarations
    let purplebliss1 = UIColor(red: 0.212, green: 0.000, blue: 0.200, alpha: 1.000)
    let purplebliss2 = UIColor(red: 0.043, green: 0.529, blue: 0.576, alpha: 1.000)

//// Color Declarations
    let venice1 = UIColor(red: 0.522, green: 0.847, blue: 0.808, alpha: 1.000)
    let venice2 = UIColor(red: 0.031, green: 0.314, blue: 0.471, alpha: 1.000)
    let aqua1 = UIColor(red: 0.149, green: 0.816, blue: 0.808, alpha: 1.000)
    let aqua2 = UIColor(red: 0.102, green: 0.161, blue: 0.502, alpha: 1.000)


    //// Color Declarations
    let mantle1 = UIColor(red: 0.141, green: 0.776, blue: 0.863, alpha: 1.000)
    let mantle2 = UIColor(red: 0.318, green: 0.290, blue: 0.616, alpha: 1.000)

但是，现在说这些代码行包含错误：

//// Gradient Declarations
let purpleBliss = CGGradientCreateWithColors(CGColorSpaceCreateDeviceRGB(), [purplebliss2.CGColor, purplebliss2.blendedColorWithFraction(0.5, ofColor: purplebliss1).CGColor, purplebliss1.CGColor], [0, 0.27, 1])!

//// Gradient Declarations
    let mantle = CGGradientCreateWithColors(CGColorSpaceCreateDeviceRGB(), [mantle1.CGColor, mantle2.CGColor], [0, 1])!

 //// Gradient Declarations
    let veniceBeach = CGGradientCreateWithColors(CGColorSpaceCreateDeviceRGB(), [venice2.CGColor, venice1.CGColor], [0, 1])!
    let aqua = CGGradientCreateWithColors(CGColorSpaceCreateDeviceRGB(), [aqua1.CGColor, aqua2.CGColor], [0, 1])!

其一贯说的错误是：

contexttual type 'CFArray' cannot be used with array literal

我不知道如何解决这个问题。有什么建议吗？

谢谢大家：）

Answer 1

（更新）尝试创建这样的CFArray：

let purpleBliss = CGGradient(colorsSpace: CGColorSpaceCreateDeviceRGB(),
                                  colors: [purplebliss2.cgColor, purplebliss2.blendedColorWithFraction(0.5, ofColor: purplebliss1).cgColor, purplebliss1.cgColor] as CFArray,
                                 locations: [0, 0.27, 1])!

其他渐变会是这样的：

let mantle = CGGradient(colorsSpace: CGColorSpaceCreateDeviceRGB(),
                         colors: [mantle1.cgColor, mantle2.cgColor] as CFArray,
                         locations: [0, 1])!

let veniceBeach = CGGradient(colorsSpace: CGColorSpaceCreateDeviceRGB(), 
                             colors: [venice2.cgColor, venice1.cgColor] as CFArray, 
                             locations: [0, 1])!

let aqua = CGGradient(colorsSpace: CGColorSpaceCreateDeviceRGB(),
                      colors:[aqua1.cgColor, aqua2.cgColor] as CFArray, 
                      locations: [0, 1])!

总而言之，更新到swift 3时所做的更改是：

CGGradientCreateWithColors现在是CGGradient。
您必须在通话中添加参数的所有标签（colorsSpace，colors和locations）。
.CGColor现在是.cgColor。
在Swift 3中，已删除对桥接类型的隐式转换，因此您必须自己投射CFArray。

Answer 2

值得一提的是，PaintCode 3完全支持导出到Swift 3。

_{- PaintCode支持}

Swift 3- PaintCode StyleKit颜色错误

2 个答案: