将16进制颜色值转换成UIColor

+ (UIColor *)getColorWithHexString:(NSString *)hexColor
{
    if ([hexColor hasPrefix:@"#"]) {
        hexColor = [hexColor substringFromIndex:1];
    }
    unsigned int red,green,blue;
    NSRange range;
    range.length = 2;
    range.location = 0;
    [[NSScanner scannerWithString:[hexColor substringWithRange:range]] scanHexInt:&red];
    
    range.location = 2;
    [[NSScanner scannerWithString:[hexColor substringWithRange:range]] scanHexInt:&green];
    
    range.location = 4;
    [[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];
}