Question 67076 in IOS Swift Question posted in
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'CGContextAddLineToPoint' is unavailable : Swift – Ios swift

What is replace of the CGContextAddLineToPoint this is what I’m trying to do

 for i in aerr {
     //0.5f offset lines up line with pixel boundary
    CGContextMoveToPoint(context, self.bounds.origin.x, self.font!.lineHeight * CGFloat(x) + baselineOffset)
                
    CGContextAddLineToPoint(context, CGFloat(self.bounds.size.width), self.font!.lineHeight * CGFloat(x) + baselineOffset)
 }

and I’m getting the following error. I know they clearly mention using move(to:) but how to use that?

‘CGContextMoveToPoint’ is unavailable: Use move(to:) instead

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2

Answers


  1. 0

    you can do it like this

    context.move(to: .init(x: self.bounds.origin.x, y: self.font!.lineHeight * CGFloat(x) + baselineOffset))
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  2. 0

    In Swift, you can simply use directly from your context because it methods is part of CGContext.

    So CGContextMoveToPoint(context, x, y) will be context.move(to:CGPoint(x, y))

    As same as, CGContextAddLineToPoint(context, x, y) will be context.addLine(to: CGPoint(x, y))

    So your code will be

    guard let context = UIGraphicsGetCurrentContext() else { return }

for i in aerr {
     //0.5f offset lines up line with pixel boundary
    context.move(to: CGPoint(x:  self.bounds.origin.x, y: self.font!.lineHeight * CGFloat(x) + baselineOffset))
    
    context.addLine(to: CGPoint(x: CGFloat(self.bounds.size.width), y: self.font!.lineHeight * CGFloat(x) + baselineOffset))
 }
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