RGB颜色转换_16进制颜色(html颜色值)字符串转为UIColor
来源:互联网 发布:黑帽seo 渗透技术 编辑:程序博客网 时间:2024/04/29 04:02
//16进制颜色(html颜色值)字符串转为UIColor
+(UIColor *) hexStringToColor: (NSString *) stringToConvert
{
NSString *cString = [[stringToConvert stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] uppercaseString];
// String should be 6 or 8 characters
if ([cString length] < 6) return [UIColor blackColor];
// 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 [UIColor blackColor];
// Separate into r, g, b substrings
NSRange range;
range.location = 0;
range.length = 2;
NSString *rString = [cString substringWithRange:range];
range.location = 2;
NSString *gString = [cString substringWithRange:range];
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:1.0f];
}
+(UIColor *) hexStringToColor: (NSString *) stringToConvert
{
NSString *cString = [[stringToConvert stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] uppercaseString];
// String should be 6 or 8 characters
if ([cString length] < 6) return [UIColor blackColor];
// 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 [UIColor blackColor];
// Separate into r, g, b substrings
NSRange range;
range.location = 0;
range.length = 2;
NSString *rString = [cString substringWithRange:range];
range.location = 2;
NSString *gString = [cString substringWithRange:range];
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:1.0f];
}
- RGB颜色转换_16进制颜色(html颜色值)字符串转为UIColor
- 16进制颜色(html颜色值)字符串转为UIColor【RGB】
- 16进制颜色(html颜色值)字符串转为UIColor
- 16进制颜色(html颜色值)字符串转为UIColor
- 16进制颜色(html颜色值)字符串转为UIColor
- 16进制颜色(html颜色值)字符串转为UIColor
- 16进制颜色(html颜色值)字符串转为UIColor
- 16进制颜色(html颜色值)字符串转为UIColor
- 16进制颜色(html颜色值)字符串转为UIColor
- 16进制颜色(html颜色值)字符串转为UIColor
- 16进制颜色(html颜色值)字符串转为UIColor
- 16进制颜色(html颜色值)字符串转为UIColor
- //16进制颜色(html颜色值)字符串转为UIColor
- 16进制颜色(html颜色值)字符串转为UIColor
- iOS开发中16进制颜色(html颜色值)字符串转为UIColor
- ios开发之16进制颜色(html颜色值)字符串转为UIColor
- ios开发之16进制颜色(html颜色值)字符串转为UIColor
- iOS开发中16进制颜色(html颜色值)字符串转为UIColor
- 51单片机串口通信的发送与接收(转)
- [黑马程序员]--Java语言IO流
- ORACLE函数大全
- RMAN-04006: error from auxiliary database
- android 设置默认切换键盘
- RGB颜色转换_16进制颜色(html颜色值)字符串转为UIColor
- IIS下PHP的ISAPI和FastCGI性能比较
- Meta Pattern, Consulting Pattern Series
- 在Cocoa中使用TagLib获取歌曲ID3信息
- hadoop入门学习资料大全
- 管理系统就是工具, 一切源于生活。
- memcached服务daemon编译
- .net中创建ACCESS数据库表的SQL和访问有密码ACCESS数据库的代码
- H.265:网络视频的高清时代 转载自:果壳网