Package of Uicolor

#import <UIKit/UIKit.h>

@interface Uicolor (Hex)

default Alpha bit 1

+ (uicolor *) colorwithhexstring: (nsstring *) color;

gets the color from the hexadecimal string,

Color: Three formats supported @ "#123456", @ "0x123456", @ " 123456"

+ (uicolor *) colorwithhexstring: (nsstring *) color alpha: (cgfloat) Alpha;

@end

--------------------. m----------------

#import "Uicolor+hex.h"

@implementation Uicolor (Hex)

+ (uicolor *) colorwithhexstring: (nsstring *) color alpha: (cgfloat) Alpha

{

// Delete spaces in a string

nsstring *cstring = [[Color stringbytrimmingcharactersinset: [nscharacterset Whitespaceandnewlinecharacterset]] uppercasestring];

//String should be 6 or 8 characters

if ([cString length] < 6)

{

return [uicolor clearcolor];

}

//Strip 0X if it appears

// If it starts with 0x, then the string is truncated, starting at index 2 , until the end

if ([cString hasprefix:@ "0X"])

{

cString = [cString substringfromindex:2];

}

//If it starts with #, then the string is truncated, and the string starts at the position indexed to 1 , up to the end

if ([cString hasprefix:@ "#"])

{

cString = [cString substringfromindex:1];

}

if ([cString length]! = 6)

{

return [uicolor clearcolor];

}

//separate into R, G, b substrings

nsrange range;

Range. location = 0;

Range. length = 2;

//r

nsstring *rstring = [cString substringwithrange: Range];

//g

Range. location = 2;

nsstring *gstring = [cString substringwithrange: Range];

//b

Range. location = 4;

nsstring *bstring = [cString substringwithrange: Range];

//Scan values

unsigned int R, G, B;

[[nsscanner scannerwithstring: rString] scanhexint:&r];

[[nsscanner scannerwithstring: gstring] scanhexint:&g];

    [[nsscanner Scannerwithstring:bstring] scanhexint:&b];

return [uicolor colorwithred:((float) R/ 255.0f) Green:(( float) G/ 255.0f) Blue:((float) b/ 255.0f) Alpha: Alpha];

}

The default alpha value is 1

+ (uicolor *) colorwithhexstring: (nsstring *) color

{

return [self colorwithhexstring: Color alpha:1.0f];

}

@end

Package of Uicolor