如何使用游乐场在Swift中读取和写入数据到文本文件？

1. Read a file/URL line-by-line in Swift

2. Read and write data from text file

链接2为我提供了解决方案,但问题是目录.默认情况下,它是当前项目的Document目录.

因此,如果我想从“/Users/Prem/Desktop/File.txt”中读取文件,我应该对该代码进行哪些修改？

如何使用自定义目录在文本文件中读写数据？

let dirs : [String]? = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory,NSSearchPathDomainMask.AllDomainsMask,true) as? [String]

if ((dirs) != nil) {
    var dir = dirs![0]; //documents directory
    //println(dir)

    //dir = "/Users/Prem/Desktop"  ----> If i give this path,its not creating the file

    //Current Value in dir
    //dir ----> "/Users/Prem/Library/Containers/com.apple.dt.playground.stub.OSX.FileIO-2159807F-CC21-4545-AC34-AD9F9898796B/Data/Documents"

    let path = dir.stringByAppendingPathComponent("File.txt");
    println(path)
    let text = "Rondom Text"

    //writing
    text.writeToFile(path,atomically: false,encoding: NSUTF8StringEncoding,error: nil);

    //reading
    let text2 = String(contentsOfFile: path,error: nil)
}