iOS中十六进制的颜色

熟悉css的都晓得这个，16进制的  如:#666666

http://blog.sina.com.cn/s/blog_5816f6a101019imm.html

这个是付值的，

查找16进制的颜色对照表，

self.view.backgroundColor = [selfcolorWithHexString:@"#fff0f5"];

- (UIColor *)colorWithHexString: (NSString *)color

{

NSString *cString = [[color stringByTrimmingCharactersInSet:[NSCharacterSetwhitespaceAndNewlineCharacterSet]] uppercaseString];

// String should be 6 or 8 characters

if ([cString length] < 6) {

return [UIColorclearColor];

}

// strip 0X if it appears

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

cString = [cString substringFromIndex:2];

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

cString = [cString substringFromIndex:1];

if ([cString length] != 6)

return [UIColorclearColor];

// 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;

[[NSScannerscannerWithString:rString] scanHexInt:&r];

[[NSScannerscannerWithString:gString] scanHexInt:&g];

[[NSScannerscannerWithString:bString] scanHexInt:&b];

return [UIColor colorWithRed:((float) r / 255.0f) green:((float) g / 255.0f) blue:((float) b / 255.0f) alpha:1.0f];

}

iOS中十六进制的颜色