iOS 通过HEX(十六进制)得到一个UIColor的对象

inline static UIColor* getColorFromHex(NSString *hexColor)
{

if (hexColor == nil) {
return nil;
}

unsigned int red, green, blue;
NSRange range;
range.length = 2;

range.location = 1;
[[NSScanner scannerWithString:[hexColor substringWithRange:range]] scanHexInt:&red];
range.location = 3;
[[NSScanner scannerWithString:[hexColor substringWithRange:range]] scanHexInt:&green];
range.location = 5;
[[NSScanner scannerWithString:[hexColor substringWithRange:range]] scanHexInt:&blue];

return [UIColor colorWithRed:(float)(red/255.0f) green:(float)(green/255.0f) blue:(float)(blue/255.0f) alpha:1.0f];
}