Get pixel color from UIImage in Swift

getPixelColor.swift

func getColorForPixel(image:CGImageRef, point:CGPoint) -> UIColor {
	let imageWidth = CGImageGetWidth(image)
	let imageHeight = CGImageGetHeight(image)
	let imageRect = CGRect(x: 0, y: 0, width: imageWidth, height: imageHeight)
	
	let bitmapBytesForRow = Int(imageWidth * 4)
	let bitmapByteCount = bitmapBytesForRow * Int(imageHeight)
	
	let colorSpace = CGColorSpaceCreateDeviceRGB()
	
	let bitmapMemory = malloc(bitmapByteCount)
	let bitmapInformation = CGImageAlphaInfo.PremultipliedFirst.rawValue
	
	let colorContext = CGBitmapContextCreate(bitmapMemory, imageWidth, imageHeight, 8, bitmapBytesForRow, colorSpace, bitmapInformation)
	
	CGContextClearRect(colorContext, imageRect)
	CGContextDrawImage(colorContext, imageRect, image)
	
	let data = CGBitmapContextGetData(colorContext)
	let dataType = UnsafePointer<UInt8>(data)
	
	let offset = 4 * (Int(imageWidth) * Int(point.y)) + Int(point.x)
	let redComponent = CGFloat(dataType[offset + 1])/255.0
	let greenComponent = CGFloat(dataType[offset + 2])/255.0
	let blueComponent = CGFloat(dataType[offset + 3])/255.0
	
	return UIColor(red: redComponent, green: greenComponent, blue: blueComponent, alpha: 1.0)
}

you forgot to call free(bitmapMemory)