将字符串转换回数组

简短的答案是：

var featCatName2 = "[home, pages, books, stores, groups, trips]"
let result = featCatName2.stringByTrimmingCharactersInSet(NSCharacterSet(charactersInString: "[]")).componentsSeparatedByString(", ")

即使数组为空也可以安全调用:)

1. var featCatName2 = "[home, pages, books, stores, groups, trips]"
   声明您的字符串“数组”
2. featCatName2 = featCatName2.stringByTrimmingCharactersInSet(NSCharacterSet(charactersInString: "[]"))
   修剪两端的[]。
3. let result = featCatName2.componentsSeparatedByString(", ")
   将字符串分解为字符串数组。