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  • iOS工具种之16进制颜色转为UIColor

     #define DEFAULT_VOID_COLOR [UIColor whiteColor]
    + (UIColor *)colorWithHexString:(NSString *)stringToConvert
    {
        NSString *cString = [[stringToConvert stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] uppercaseString];
        
        
        if ([cString length] < 6) 
            return DEFAULT_VOID_COLOR;
        if ([cString hasPrefix:@"#"]) 
            cString = [cString substringFromIndex:1];
        if ([cString length] != 6) 
            return DEFAULT_VOID_COLOR;
        
        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];
        
        
        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];
    }

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  • 原文地址:https://www.cnblogs.com/lcchuguo/p/5303770.html
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