CODEWITHSUNDEEP
iosobjective-cuicolor
Eduard Avetisyan
Eduard Avetisyan

Reputation: 471

Conversion from UIColor with alpha component to CGColor

This piece of code works fine

self.fillColor = [UIColor whiteColor].CGColor;

While this throws an exception in my drawRect function

self.fillColor = [[UIColor whiteColor] colorWithAlphaComponent:0.2].CGColor;

drawRect:

- (void)drawRect:(CGRect)rect {

    CGContextRef context = UIGraphicsGetCurrentContext();

    CGContextSetFillColorWithColor(context, self.fillColor); //exception here
    CGContextSetStrokeColorWithColor(context, self.fillColor);

    CGContextFillEllipseInRect(context, rect);
    CGContextStrokeEllipseInRect(context, rect);

}

What's the issue?

Upvotes: 2

Views: 1247

Answers (1)

Fogmeister
Fogmeister

Reputation: 77661

Ok. It looks like the error is from the way the property is defined.

Try defining it this way...

@property UIColor *fillColor;

Then in drawRect you can use...

fillColor.CGColor

I have done this hundreds of times. Alpha values don't make any difference.

Upvotes: 1

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