Question

func getEmojiTags(text: String) -> [String] {
}

表情符号标签是两部分的组合，它们之间没有空格。如果它们之间有空格，那么它不是表情符号。

一个表情符号
不表情符号

例如：

Hello, my name is Jason   how are you ?-> []
Hello, my name is Jason -> [Jason]
Hello, my name is  Jason -> [] 
I am going to the ⛱beach with some monkeys   -> [⛱beach, monkeys]

Answer 1

尝试将NSRegularExpression与表情符号代码范围一起使用。

func emojiTags(str: String) -> [String]  {
    //A little bit simplified, you may need to define what are your "emoji".
    //This is a subset defined in http://stackoverflow.com/a/36258684/6541007 .
    let emojiCharacters = "\\U0001F600-\\U0001F64F\\U0001F300-\\U0001F5FF\\U0001F680-\\U0001F6FF\\u2600-\\u26FF"
    let pattern = "[\(emojiCharacters)][^\(emojiCharacters)\\s]+"
    let regex = try! NSRegularExpression(pattern: pattern, options: [])
    let matches = regex.matchesInString(str, options: [], range: NSRange(0..<str.utf16.count))
    return matches.map{(str as NSString).substringWithRange($0.range)}
}
let str1 = "Hello, my name is Jason   how are you ?"
print(emojiTags(str1)) //->[]
let str2 = "Hello, my name is Jason"
print(emojiTags(str2)) //->["Jason"]
let str3 = "Hello, my name is  Jason"
print(emojiTags(str3)) //->[]
let str4 = "I am going to the ⛱beach with some monkeys "
print(emojiTags(str4)) //->["⛱beach", "monkeys"]

在Swift中，如何检测＆＃34;表情符号标记＆＃34;？

1 个答案: