IOS开发之——颜色设置
浏览数：27 /
时间：2015年06月11日
颜色设置：
指定RGB，參数是：红、绿、黄、透明度，范围是0-1
+ (UIColor *)colorWithRed:(CGFloat)red green:(CGFloat)green blue:(CGFloat)blue alpha:(CGFloat)alpha;
指定HSB，參数是：色调（hue），饱和的（saturation），亮度（brightness）
+ (UIColor *)colorWithHue:(CGFloat)hue saturation:(CGFloat)saturation brightness:(CGFloat)brightness alpha:(CGFloat)alpha;
当前的颜色改变透明度后的颜色：
UIColor *color = [UIColor redColor]; UIColor *cl = [color colorWithAlphaComponent:0.5f];
CGFloat R = (CGFloat) 225/255.0;
CGFloat G = (CGFloat) 66/255.0;
CGFloat B = (CGFloat) 88/255.0;
CGFloat alpha = (CGFloat) 1.0;
UIColor *myColorRGB = [ UIColor colorWithRed: R green: G blue: B alpha: alpha ];
self.tableView.backgroundColor = myColorRGB;
最后附上
UIColor官方API文档：
Creating a UIColor Object from Component Values
+colorWithWhite:alpha: +colorWithHue:saturation:brightness:alpha: +colorWithRed:green:blue:alpha: +colorWithCGColor: +colorWithPatternImage: +colorWithCIColor: –colorWithAlphaComponent:
Initializing a UIColor Object
–initWithWhite:alpha: –initWithHue:saturation:brightness:alpha: –initWithRed:green:blue:alpha: –initWithCGColor: –initWithPatternImage: –initWithCIColor:
Creating a UIColor with Preset Component Values
+blackColor +darkGrayColor +lightGrayColor +whiteColor +grayColor +redColor +greenColor +blueColor +cyanColor +yellowColor +magentaColor +orangeColor +purpleColor +brownColor +clearColor
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