/// 使用 16 进制数字创建颜色,例如 0xFF0000 创建红色
///
/// @param hex 16 进制无符号32位整数
///
/// @return 颜色
+ (instancetype)colorWithHex:(uint32_t)hex {
uint8_t r = (hex & 0xff0000) >> 16;
uint8_t g = (hex & 0x00ff00) >> 8;
uint8_t b = hex & 0x0000ff;
return [self colorWithRed:r green:g blue:b];
}
/// 生成随机颜色
///
/// @return 随机颜色
+ (instancetype)randomColor {
return [UIColor colorWithRed:arc4random_uniform(256) green:arc4random_uniform(256) blue:arc4random_uniform(256)];
}
/// 使用 R / G / B 数值创建颜色
///
/// @param red red
/// @param green green
/// @param blue blue
///
/// @return 颜色
+ (instancetype)colorWithRed:(uint8_t)red green:(uint8_t)green blue:(uint8_t)blue {
return [UIColor colorWithRed:red / 255.0 green:green / 255.0 blue:blue / 255.0 alpha:1.0];
}