let fullName : String = "Steve.Jobs"
let fullNameArr : [String] = fullName.components(separatedBy: ".")

var firstName : String = fullNameArr[0]
var lastName : String = fullNameArr[1]

根据Swift 2.2

您只需编写2行代码，就会得到拆分字符串。

let fullName = "FirstName LastName"
var splitedFullName = fullName.componentsSeparatedByString(" ")
print(splitedFullName[0])
print(splitedFullName[1]) 

享受。：）

作为WMios答案的替代方案，您还可以使用componentsSeparatedByCharactersSet，这在分隔符（空格、逗号等）较多的情况下非常方便。

使用您的特定输入：

let separators = NSCharacterSet(charactersInString: " ")
var fullName: String = "First Last";
var words = fullName.componentsSeparatedByCharactersInSet(separators)

// words contains ["First", "Last"]

使用多个分隔符：

let separators = NSCharacterSet(charactersInString: " ,")
var fullName: String = "Last, First Middle";
var words = fullName.componentsSeparatedByCharactersInSet(separators)

// words contains ["Last", "First", "Middle"]

在Swift 4中将字符串拆分为数组的步骤。

赋值字符串基于@spling。

注意：variableName.components（separatedBy:“split关键字”）

let fullName: String = "First Last @ triggerd event of the session by session storage @ it can be divided by the event of the trigger."
let fullNameArr = fullName.components(separatedBy: "@")
print("split", fullNameArr)

雨燕3

let line = "AAA    BBB\t CCC"
let fields = line.components(separatedBy: .whitespaces).filter {!$0.isEmpty}

返回三个字符串AAA、BBB和CCC筛选出空字段处理多个空格和制表字符如果要处理新行，请将.whittespaces替换为.whittespace和新行

Swift 5.2的更新和最简单的方式

let paragraph = "Bob hit a ball, the hit BALL flew far after it was hit. Hello! Hie, How r u?"

let words = paragraph.components(separatedBy: [",", " ", "!",".","?"])

这张照片，

[“Bob”，“hit”，“a”，“ball”，“the”，“击球”，“ball”，“fly”，“far”，“after”，“it”，“was”，“hit”，“Hello”，“Hie”，“How”，“u”，“”]

但是，如果要过滤空字符串，

let words = paragraph.components(separatedBy: [",", " ", "!",".","?"]).filter({!$0.isEmpty})

输出

[“Bob”，“hit”，“a”，“ball”，“the”，“命中”，“ball”，“fly”，“far”，“after”，“it”，“was”，“hit”，“Hello”，”Hie“，”How“，”r“，”u“]

但请确保，Foundation已导入。