Question

override func drawRect(rect: CGRect) {
    let green: UIColor = UIColor(red: 79, green: 255, blue: 110, alpha: 1)

    let lightGreen: UIColor;(red: 190, green: 225, blue: 211, alpha: 1)

    let context = UIGraphicsGetCurrentContext()

    let greenGradient = CGGradientCreateWithColors(CGColorSpaceCreateDeviceRGB(), [lightGreen.CGColor, green.CGColor],[0, 1],

        let backgroundPath = UIBezierPath(rect:  CGRectMake(0, 0, self.frame.width, self.frame.height)),
        CGContextSaveGState(context),
        backgroundPath.addClip(),

        CGContextDrawLinearGradient(context, greenGradient, CGPointMake(160, 0), CGPointMake(160, 568),

            UInt32(kCGGradientDrawsBeforeStartLocation) | UInt32 (kCGGradientDrawsAfterEndLocation)),

        CGContextRestoreGState(context)

我一直在尝试调试这个大约一个小时，并且构建每次都失败。

Answer 1

假设颜色不起作用，

尝试此设置颜色

let green = UIColor(red: 79/255.0, green: 255/255.0, blue: 110/255.0, alpha: 1)

let lightGreen = UIColor(red: 190/255.0, green: 225/255.0, blue: 211/255.0, alpha: 1)

Answer 2

您在第二行添加了分号：

let lightGreen: UIColor;(red: 190, green: 225, blue: 211, alpha: 1)

删除此分号。它会正常工作。

我的代码出了什么问题。我试图为表视图控制器着色

2 个答案: