NSFileManager

//假設用戶文檔下有如下檔和資料夾[test1.txt,fold1/test2.txt]
let manager = NSFileManager.defaultManager()
let urlForDocument = manager.URLsForDirectory( NSSearchPathDirectory.DocumentDirectory, inDomains:NSSearchPathDomainMask.UserDomainMask)
let url = urlForDocument[0] as NSURL
 
//（1）對指定路徑執行淺搜索，返回指定目錄路徑下的檔、子目錄及符號連結的清單
let contentsOfPath = try? manager.contentsOfDirectoryAtPath(url.path!)
//contentsOfPath：Optional([fold1, test1.txt])
print("contentsOfPath: \(contentsOfPath)")
 
//（2）類似上面的，對指定路徑執行淺搜索，返回指定目錄路徑下的檔、子目錄及符號連結的清單
let contentsOfURL = try? manager.contentsOfDirectoryAtURL(url, includingPropertiesForKeys: nil, options: NSDirectoryEnumerationOptions.SkipsHiddenFiles);
//contentsOfURL：Optional([file://Users/.../Application/.../Documents/fold1/,
// file://Users/.../Application/.../Documents/test1.txt])
print("contentsOfURL: \(contentsOfURL)")
 
//（3）深度遍歷，會遞迴遍歷子資料夾（但不會遞迴符號連結）
let enumeratorAtPath = manager.enumeratorAtPath(url.path!)
//enumeratorAtPath：Optional([fold1, fold1/test2.txt, test1.txt])
print("enumeratorAtPath: \(enumeratorAtPath?.allObjects)")
 
//（4）類似上面的，深度遍歷，會遞迴遍歷子資料夾（但不會遞迴符號連結）
let enumeratorAtURL = manager.enumeratorAtURL(url, includingPropertiesForKeys: nil, options: NSDirectoryEnumerationOptions.SkipsHiddenFiles, errorHandler:nil)
//contentsOfURL：Optional([file://Users/.../Application/.../Documents/fold1/,
// file://Users/.../Application/.../Documents/fold1/test2.txt,
// file://Users/.../Application/.../Documents/test1.txt])
print("enumeratorAtURL: \(enumeratorAtURL?.allObjects)")
 
//（5）深度遍歷，會遞迴遍歷子資料夾（包括符號連結，所以要求性能的話用enumeratorAtPath）
let subPaths = manager.subpathsAtPath(url.path!)
//subPaths：Optional([fold1, fold1/test2.txt, test1.txt])
print("subPaths: \(subPaths)")

let fileManager = NSFileManager.defaultManager()
let filePath:String = NSHomeDirectory() + "/Documents/test.txt"
var exist = fileManager.fileExistsAtPath(filePath)

let myDirectory:String = NSHomeDirectory() + "/Documents/myFolder/Files"
let fileManager = NSFileManager.defaultManager()
//withIntermediateDirectories為ture表示路徑中間如果有不存在的資料夾都會建立
try! fileManager.createDirectoryAtPath(myDirectory,
    withIntermediateDirectories: true, attributes: nil)
func createFolder(name:String,baseUrl:NSURL){
    let manager = NSFileManager.defaultManager()
    let folder = baseUrl.URLByAppendingPathComponent(name, isDirectory: true)
    print("資料夾: \(folder)")
    let exist = manager.fileExistsAtPath(folder.path!)
    if !exist {
        try! manager.createDirectoryAtURL(folder, withIntermediateDirectories: true, attributes: nil)
    }
}
 
//在文檔目錄下新建folder目錄
let manager = NSFileManager.defaultManager()
let urlForDocument = manager.URLsForDirectory( NSSearchPathDirectory.DocumentDirectory, inDomains:NSSearchPathDomainMask.UserDomainMask)
let url = urlForDocument[0] as NSURL
createFolder("folder", baseUrl: url)

//把String保存到檔
let filePath:String = NSHomeDirectory() + "/Documents/hangge.txt"
let info = "歡迎來到 swift"
try! info.writeToFile(filePath, atomically: true, encoding: NSUTF8StringEncoding)
//把圖片保存到檔路徑下
let filePath:String = NSHomeDirectory() + "/Documents/hangge.png"
let image = UIImage(named: "apple.png")
let data:NSData = UIImagePNGRepresentation(image!)!
data.writeToFile(filePath, atomically: true)
把NSArray保存到文件路径下
let array = NSArray(objects: "aaa","bbb","ccc")
let filePath:String = NSHomeDirectory() + "/Documents/array.plist"
array.writeToFile(filePath, atomically: true)
把NSDictionary保存到文件路径下
let dictionary = NSDictionary(objects: ["111","222"], forKeys: ["aaa","bbb"])
let filePath:String = NSHomeDirectory() + "/Documents/dictionary.plist"
dictionary.writeToFile(filePath, atomically: true)

func createFile(name:String,fileBaseUrl:NSURL){
    let manager = NSFileManager.defaultManager()
 
    let file = fileBaseUrl.URLByAppendingPathComponent(name)
    print("文件: \(file)")
    let exist = manager.fileExistsAtPath(file.path!)
    if !exist {
        let data = NSData(base64EncodedString:"aGVsbG8gd29ybGQ=",options:.IgnoreUnknownCharacters)
        let createSuccess = manager.createFileAtPath(file.path!,contents:data,attributes:nil)
        print("檔創建結果: \(createSuccess)")
    }
}
 
//在目錄下新建 test.txt
let manager = NSFileManager.defaultManager()
let urlForDocument = manager.URLsForDirectory( NSSearchPathDirectory.DocumentDirectory,
    inDomains:NSSearchPathDomainMask.UserDomainMask)
let url = urlForDocument[0] as NSURL
createFile("test.txt", fileBaseUrl: url)
//createFile("folder/new.txt", fileBaseUrl: url)

//方法1
let fileManager = NSFileManager.defaultManager()
let homeDirectory = NSHomeDirectory()
let srcUrl = homeDirectory + "/Documents/hangge.txt"
let toUrl = homeDirectory + "/Documents/copyed.txt"
try! fileManager.copyItemAtPath(srcUrl, toPath: toUrl)
 
//方法2
// 定位到使用者文檔目錄
let manager = NSFileManager.defaultManager()
let urlForDocument = manager.URLsForDirectory( NSSearchPathDirectory.DocumentDirectory, inDomains:NSSearchPathDomainMask.UserDomainMask)
let url = urlForDocument[0] as NSURL
 
// 將test.txt檔拷貝到文檔目錄根目錄下的copyed.txt文件
let srcUrl = url.URLByAppendingPathComponent("test.txt")
let toUrl = url.URLByAppendingPathComponent("copyed.txt")
try! manager.copyItemAtURL(srcUrl, toURL: toUrl)

//方法1
let fileManager = NSFileManager.defaultManager()
let homeDirectory = NSHomeDirectory()
let srcUrl = homeDirectory + "/Documents/hangge.txt"
let toUrl = homeDirectory + "/Documents/moved"
try! fileManager.moveItemAtPath(srcUrl, toPath: toUrl)
 
//方法2
// 定位到使用者文檔目錄
let manager = NSFileManager.defaultManager()
let urlForDocument = manager.URLsForDirectory( NSSearchPathDirectory.DocumentDirectory, inDomains:NSSearchPathDomainMask.UserDomainMask)
let url = urlForDocument[0] as NSURL
 
let srcUrl = url.URLByAppendingPathComponent("test.txt")
let toUrl = url.URLByAppendingPathComponent("copyed.txt")
// 移動srcUrl中的文件（test.txt）到toUrl中（copyed.txt）
try! manager.moveItemAtURL(srcUrl, toURL: toUrl)

//方法1
let fileManager = NSFileManager.defaultManager()
let homeDirectory = NSHomeDirectory()
let srcUrl = homeDirectory + "/Documents/hangge.txt"
try! fileManager.removeItemAtPath(srcUrl)
 
//方法2
// 定位到使用者文檔目錄
let manager = NSFileManager.defaultManager()
let urlForDocument = manager.URLsForDirectory( NSSearchPathDirectory.DocumentDirectory,
    inDomains:NSSearchPathDomainMask.UserDomainMask)
let url = urlForDocument[0] as NSURL
 
let toUrl = url.URLByAppendingPathComponent("copyed.txt")
// 刪除文檔根目錄下的toUrl路徑的檔（copyed.txt文件）
try! manager.removeItemAtURL(toUrl)

//方法1：獲取所有檔，然後遍歷刪除
let fileManager = NSFileManager.defaultManager()
let myDirectory = NSHomeDirectory() + "/Documents/Files"
let fileArray:[AnyObject]? = fileManager.subpathsAtPath(myDirectory)
for fn in fileArray!{
    try! fileManager.removeItemAtPath(myDirectory + "/\(fn)")
}
 
//方法2：刪除目錄後重新創建該目錄
let fileManager = NSFileManager.defaultManager()
let myDirectory = NSHomeDirectory() + "/Documents/Files"
try! fileManager.removeItemAtPath(myDirectory)
try! fileManager.createDirectoryAtPath(myDirectory, withIntermediateDirectories: true, attributes: nil)

let manager = NSFileManager.defaultManager()
let urlsForDocDirectory = manager.URLsForDirectory(NSSearchPathDirectory.DocumentDirectory, inDomains:NSSearchPathDomainMask.UserDomainMask)
let docPath:NSURL = urlsForDocDirectory[0] as NSURL
let file = docPath.URLByAppendingPathComponent("test.txt")
 
//方法1
let readHandler = try! NSFileHandle(forReadingFromURL:file)
let data = readHandler.readDataToEndOfFile()
let readString = NSString(data: data, encoding: NSUTF8StringEncoding)
print("檔內容: \(readString)")
 
//方法2
let data = manager.contentsAtPath(file.path!)
let readString = NSString(data: data!, encoding: NSUTF8StringEncoding)
print("檔內容: \(readString)")

let manager = NSFileManager.defaultManager()
let urlsForDocDirectory = manager.URLsForDirectory(NSSearchPathDirectory.DocumentDirectory, inDomains:NSSearchPathDomainMask.UserDomainMask)
let docPath:NSURL = urlsForDocDirectory[0] as NSURL
let file = docPath.URLByAppendingPathComponent("test.txt")
 
let string = "添加一些文字到檔末尾"
let appendedData = string.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: true)
let writeHandler = try? NSFileHandle(forWritingToURL:file)
writeHandler!.seekToEndOfFile()
writeHandler!.writeData(appendedData!)

let manager = NSFileManager.defaultManager()
let urlsForDocDirectory = manager.URLsForDirectory(NSSearchPathDirectory.DocumentDirectory, inDomains:NSSearchPathDomainMask.UserDomainMask)
let docPath:NSURL = urlsForDocDirectory[0] as NSURL
let file = docPath.URLByAppendingPathComponent("test.txt")
 
let readable = manager.isReadableFileAtPath(file.path!)
print("可讀: \(readable)")
let writeable = manager.isWritableFileAtPath(file.path!)
print("可寫: \(writeable)")
let executable = manager.isExecutableFileAtPath(file.path!)
print("可執行: \(executable)")
let deleteable = manager.isDeletableFileAtPath(file.path!)
print("可刪除: \(deleteable)")

let manager = NSFileManager.defaultManager()
let urlsForDocDirectory = manager.URLsForDirectory(NSSearchPathDirectory.DocumentDirectory,
    inDomains:NSSearchPathDomainMask.UserDomainMask)
let docPath:NSURL = urlsForDocDirectory[0] as NSURL
let file = docPath.URLByAppendingPathComponent("test.txt")
 
let attributes = try? manager.attributesOfItemAtPath(file.path!) //結果為AnyObject類型
print("attributes: \(attributes!)")

let manager = NSFileManager.defaultManager()
let urlsForDocDirectory = manager.URLsForDirectory(NSSearchPathDirectory.DocumentDirectory,
    inDomains:NSSearchPathDomainMask.UserDomainMask)
let docPath:NSURL = urlsForDocDirectory[0] as NSURL
let contents = try! manager.contentsOfDirectoryAtPath(docPath.path!)
 
//下面比較前面兩個檔是否內容相同（該方法也可以用來比較目錄）
let count = contents.count
if count > 1 {
    let path1 = docPath.path! + "/" + (contents[0] as String)
    let path2 = docPath.path! + "/" + (contents[1] as String)
    let equal = manager.contentsEqualAtPath(path1,andPath:path2)
    print("比較結果: \(equal)")
}