试着创造一个CGMutablePath()
,就像这样:
let path = CGMutablePath()
CGPathMoveToPoint(path, nil, 30, 0)
但编译器一直给我以下错误:'nil' not compatible with expected argument type 'UnsafePointer<CGAffineTransform>'
.我做错了什么?我似乎在网上找不到其他东西.
试着创造一个CGMutablePath()
,就像这样:
let path = CGMutablePath()
CGPathMoveToPoint(path, nil, 30, 0)
但编译器一直给我以下错误:'nil' not compatible with expected argument type 'UnsafePointer<CGAffineTransform>'
.我做错了什么?我似乎在网上找不到其他东西.
试试这个:
let path = CGMutablePath()
path.move(to: CGPoint(x: 30, y: 0))
CGPath API现在作为实例方法导入Swift 3.