千巷猫影
最简单,最干净,最快捷的方法是按照已知的emoji表情和dingbats范围检查字符串中每个字符的Unicode代码点,如下所示:extension String { var containsEmoji: Bool { for scalar in unicodeScalars { switch scalar.value { case 0x1F600...0x1F64F, // Emoticons 0x1F300...0x1F5FF, // Misc Symbols and Pictographs 0x1F680...0x1F6FF, // Transport and Map 0x2600...0x26FF, // Misc symbols 0x2700...0x27BF, // Dingbats 0xFE00...0xFE0F, // Variation Selectors 0x1F900...0x1F9FF, // Supplemental Symbols and Pictographs 0x1F1E6...0x1F1FF: // Flags return true default: continue } } return false }}