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];
}