Draw Radial Gradient in Quartz

Here is the code snippet for that to be written inside - (void)drawRect:(CGRect)rect of UIView

    CGContextRef ctx = UIGraphicsGetCurrentContext();

    

    

    //Draw the gray Gradient

    

    CGFloat BGLocations[2] = { 0.0, 1.0 };

    CGFloat BgComponents[8] = { 0.25, 0.25, 0.25 , 1.0,  // Start color

       0.11, 0.11, 0.11, 1.0 }; // Mid color and End color

    CGColorSpaceRef BgRGBColorspace = CGColorSpaceCreateDeviceRGB();

    CGGradientRef bgRadialGradient = CGGradientCreateWithColorComponents(BgRGBColorspace, BgComponents, BGLocations, 2);

    

    

    CGPoint startBg = CGPointMake(250, 250); 

    CGFloat endRadius= 250;

    

    

    CGContextDrawRadialGradient(ctx, bgRadialGradient, startBg, 0, startBg, endRadius, kCGGradientDrawsAfterEndLocation);

    CGColorSpaceRelease(BgRGBColorspace);

    CGGradientRelease(bgRadialGradient);

    

Screenshot of the output