数据存储：获取文件目录

1.C函数：

//获取Documents文件夹（C函数）

        var path = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.UserDomainMask, true)

        var documentDirectory = path[0] as! String

        println(documentDirectory)

        //输出结果：/Users/snn/Library/Developer/CoreSimulator/Devices/C1C3686E-51D8-4A0B-9250- DEE14E97C1E7/data/Containers/Data/Application/3777420C-7B9C-467C-B6F5-ADA069072695/Documents

        

        //获取tmp文件夹

        var tempPath = NSTemporaryDirectory()

        println(tempPath)

        

        //输出结果：/Users/snn/Library/Developer/CoreSimulator/Devices/C1C3686E-51D8-4A0B-9250- DEE14E97C1E7/data/Containers/Data/Application/3777420C-7B9C-467C-B6F5-ADA069072695/tmp/

2.NSFileManager类：

//文件操作类

        var fileManager = NSFileManager.defaultManager()

        //获取Documents文件夹，数组中是NSURL类型

        var documentDirectoryWithManager = fileManager.URLsForDirectory(NSSearchPathDirectory.DocumentDirectory, inDomains: NSSearchPathDomainMask.UserDomainMask)

        println(documentDirectoryWithManager)

        //输出结果：[file:///Users/snn/Library/Developer/CoreSimulator/Devices/C1C3686E-51D8-4A0B-9250-
DEE14E97C1E7/data/Containers/Data/Application/3777420C-7B9C-467C-B6F5-ADA069072695/Documents/]