Question

我希望在符号@或swift中的数字之前获取值。我的电子邮件是do { //Convert to Data let jsonData = try JSONSerialization.data(withJSONObject: dictionaryArray, options: JSONSerialization.WritingOptions.prettyPrinted) //Do this for print data only otherwise skip if let JSONString = String(data: jsonData, encoding: String.Encoding.utf8) { print(JSONString) } //In production, you usually want to try and cast as the root data structure. Here we are casting as a dictionary. If the root object is an array cast as [AnyObject]. var json = try JSONSerialization.jsonObject(with: jsonData, options: JSONSerialization.ReadingOptions.mutableContainers) as? [String: AnyObject] } catch { print(error.description) }。我只想获得john@gmail.com。另一个例子是john。我只想获得peter34@gmail.com。

Answer 1

使用components(separatedBy:)传递CharacterSet由@和数字组成，然后使用first获取符号的第一部分：

let emails = ["john@gmail.com", "peter34@gmail.com"]

for email in emails {
    if let name = email.components(separatedBy: CharacterSet(charactersIn: ("@0123456789"))).first {
        print(name)
    }
}

输出：

john
peter

Answer 2

试试这个

let EMAIL= "peter34@gmail.com"
let EMAILARR= EMAIL.characters.split{$0 == "@"}.map(String.init)

EMAILARR[0] // to get peter34
EMAILARR[1] // to get gmail.com

在找到符号@或swift ios中的数字后拆分字符串

2 个答案: