给金额添加千分符,用swift语言编写.

// 根据传入的金额字符串,给金额添加千分符,例如:string = "2147483647.214" ,precision
= 3 函数的返回值为: "2,147,483,647.214"

func separatedFloatStrWith(string:NSString,precision:Int) ->String

{

let formatter =
NSNumberFormatter()

let value = string.doubleValue

var format =
NSMutableString(string: "###,##0")

if(precision ==
0)

{

formatter.positiveFormat = format
as String

return formatter.stringFromNumber(NSNumber(double: value))!

}

else

{

format = NSMutableString(string:
"###,##0.")

for _
in 1...precision

{

format.appendFormat("0")

}

formatter.positiveFormat = format
as String

return formatter.stringFromNumber(NSNumber(double: value))!

}

}