iOS - UIView操作(SWift)

1. UIView 视图的渐变填充

override func viewDidLoad() {

super.viewDidLoad()

// Do any additional setup after loading the view, typically from a nib.

//渐变填充色的图形

let rect = CGRect(x: 30, y: 60, width: 200, height: 200)

let gradientView = UIView(frame: rect)

let gradientLayer = CAGradientLayer()

gradientLayer.frame = gradientView.frame

let fromColor = UIColor.yellowColor().CGColor

let midColor = UIColor.redColor().CGColor

let toColor = UIColor.purpleColor().CGColor

gradientLayer.colors = [fromColor,midColor,toColor]

//将设置好的渐变层,添加到视图对象的层中.

view.layer.addSublayer(gradientLayer)

//将视图对象,添加到当前视图控制器的根视图

self.view.addSubview(gradientView)

}

2. UIView视图的纹理

override func viewDidLoad() {

super.viewDidLoad()

// Do any additional setup after loading the view, typically from a nib.

//将导入的图片作为纹理,平铺整个屏幕

let image = UIImage(named: "Sample")

//新建颜色对象,将导入的图片赋予该对象

let patternColor = UIColor.init(patternImage: image!)

self.view.backgroundColor = patternColor

}

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