CODEWITHSUNDEEP
swiftdrawrect
user3746428
user3746428

Reputation: 11175

Issues with creating circular progress bar

I have been trying to implement a circular progress bar in my app, however I have been having a few issues.

This is my code:

override func drawRect(rect: CGRect) {
    var ctx = UIGraphicsGetCurrentContext()

    var progress: CGFloat = 0.7
    var innerRadiusRatio: CGFloat = 0.5

    var path: CGMutablePathRef = CGPathCreateMutable()
    var startAngle: CGFloat = CGFloat(-M_PI_2)
    var endAngle: CGFloat = CGFloat(-M_PI_2) + min(1.0, progress) * CGFloat(M_PI * 2)
    var outerRadius: CGFloat = CGRectGetWidth(budgetDisplayView.bounds) * 0.5 - 1.0
    var innerRadius: CGFloat = outerRadius * innerRadiusRatio
    var center = CGPointMake(CGRectGetMidX(rect), CGRectGetMidY(rect))

    CGPathAddArc(path, nil, center.x, center.y, innerRadius, startAngle, endAngle, false)
    CGPathAddArc(path, nil, center.x, center.y, outerRadius, endAngle, startAngle, true)
    CGPathCloseSubpath(path)
    CGContextAddPath(ctx, path)

    CGContextSaveGState(ctx)
    CGContextClip(ctx)
    CGContextDrawImage(ctx, budgetDisplayView.bounds, UIImage(named: "RadialProgressFill").CGImage)
    CGContextRestoreGState(ctx)
}

I am getting an error - Method does not override any method from its superclass.

Thanks.

Upvotes: 1

Views: 244

Answers (2)

Undo
Undo

Reputation: 25687

This seems to be in a view controller, which doesn't have a bounds property. This code should be in a UIView subclass, as your drawRect: method isn't even going to be called.

Upvotes: 2

Nate Cook
Nate Cook

Reputation: 93276

It sounds like you're trying to inherit from UIViewController, which has neither a drawRect method nor a bounds property. You should be inheriting from UIView instead.

Upvotes: 3

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