Question

我试图让Live View在Swift Playground中显示一个简单的动画。每当我导入XCPlayground框架以执行XCPShowView函数时，我都会收到此错误：

Playground execution failed: error: Couldn't lookup symbols:_CGPointMake

其他一些＆＃34;符号＆＃34>的错误会发生变化。同样，包括CGRectMake 建议修改我的代码后删除＆＃34; make＆＃34;来自CGRectMake之类的方法当我尝试动画我的视图时，我仍然从Xcode收到错误。错误信息真的很长，但基本上它说

"Unable to simultaneously satisfy constraints. Probably at least one of the constraints in the following list is one you don't want."

以下是我尝试使用的代码：

//Circle Button
class timerButtonGraphics: UIView {
    override func drawRect(rect: CGRect) {
        let colorGreen = UIColor(red: 0.310, green: 0.725, blue: 0.624, alpha: 1.000)
        let colorRed = UIColor(red: 241/255, green: 93/255, blue: 79/255, alpha: 100)
        var bounds = self.bounds
        var center = CGPoint()
        center.x = bounds.origin.x + bounds.size.width / 2
        center.y = bounds.origin.y + bounds.size.height / 2
        var radius = 61
        var path:UIBezierPath = UIBezierPath()
        path.addArcWithCenter(center, radius: CGFloat(radius), startAngle: CGFloat(0.0), endAngle: CGFloat(Float(M_PI) * 2.0), clockwise: true)
        path.strokeWithBlendMode(kCGBlendModeNormal, alpha: 100)
        path.lineWidth = 2
        if strokeRed == true {
            colorRed.setStroke()
        }
        else {
            colorGreen.setStroke()
        }
        path.stroke()
    }
    var strokeRed = true
    }

var test = timerButtonGraphics(frame: CGRect(x: 0, y: 400, width: 400, height: 400))

UIView.animateWithDuration(2.0, delay: 2, usingSpringWithDamping: 0.7, initialSpringVelocity: 0.5, options: nil, animations: {
    test.transform = CGAffineTransformMakeTranslation(0.5, 0)
    }, completion: nil)

XCPShowView("Circle Animation", test)

Answer 1

试试这个，也许它可以帮到你

test.setTranslatesAutoresizingMaskIntoConstraints(false)

Swift Playground XCPShowView“无法满足约束”

1 个答案: