swift – .playground中的writeToFile如何？

我编辑了一个.plist文件.我是如何理解的：由于沙盒,它只能读取Resources目录中.playgrounds文件中的文件.但是如何将编辑过的文件写入此文件夹呢？

// read file
let xmlPath: String = NSBundle.mainBundle().pathForResource("Settings",ofType: "plist")!
var xmlDictionary: [String : AnyObject] = NSDictionary(contentsOfFile: xmlPath) as Dictionary<String,AnyObject>

// editing file
// ...

// saving file
let saveDict: NSDictionary = xmlDictionary as NSDictionary
let savePath: String = xmlPath.stringByDeletingLastPathComponent.stringByAppendingPathComponent("Saved.plist")
saveDict.writetoFile(savePath,atomically: false) // ~> false

savePath和xmlPath是否正常工作,返回false表示没有成功.

如果我可以替换.plist文件的旧(未编辑)版本会很好,但保存到新文件也可以.

解决方法

修改主包中的文件似乎不可能,see earlier question.您可以做的是保存到沙盒应用程序文件夹,可以检索到的URL如下所示：

func applicationDirectory(directory:NSSearchPathDirectory) -> NSURL? {

    var appDirectory:String?
    var paths:[AnyObject] = NSSearchPathForDirectoriesInDomains(directory,NSSearchPathDomainMask.UserDomainMask,true);
    if paths.count > 0 {
        if let pathString = paths[0] as? String {
            appDirectory = pathString
        }
    }
    if let dD = appDirectory {
        return NSURL(string:dD)
    }
    return nil
}



func applicationTemporaryDirectory() -> NSURL? {

    if let tD = NstemporaryDirectory() {
        return NSURL(string:tD)
    }

    return nil

}

applicationTemporaryDirectory()

applicationDirectory(NSSearchPathDirectory.DocumentDirectory)

网址将显示在游乐场的右侧,然后只需复制并粘贴到Finder中即可 – >Go – >转到文件夹对话框.

GitHub Repo：有关完整的工作示例,请参阅此GitHub repo.