swift 数据读写

//

//  DocumentActionViewController.swift

//  UIControlDemo

//

//  Created by  on 14/12/10.

//  Copyright (c) 2014年 马大哈. All rights reserved.

//

import UIKit

class DocumentActionViewController: BaseViewController {

    override func viewDidLoad() {

        super.viewDidLoad()

        let leftBarButton:UIBarButtonItem = UIBarButtonItem(title: "移除data.plist", style: UIBarButtonItemStyle.Plain, target: self, action: "removePlistFile")

        self.navigationItem.rightBarButtonItem = leftBarButton;

//        println("\n程序document路径 : \(applicationDocumentPath())")

        // 在document中是否存在 ImageOfGoods/data.plist 文件

        if applicationFileExistAtPath(false, fileName: "data.plist", directory: "ImageOfGoods"){

            var data = applicationReadDataToFileAtPath(dataTypeArray: true,fileName: "data.plist", directory: "ImageOfGoods") as NSArray

            println("\n获取file数据 : \(data)") 

        }else{

            var writeData = ["1","2","3","4","5"]

            // 创建  ImageOfGoods  文件夹

            applicationCreatFileAtPath(fileTypeDirectory: true, fileName: "ImageOfGoods", directory: "")

            // 创建  data.plist  文件

            applicationCreatFileAtPath(fileTypeDirectory: false, fileName: "data.plist", directory: "ImageOfGoods")

            // 插入  数组

            applicationWriteDataToFileAtPath(dataTypeArray: true , content: writeData, fileName: "data.plist", directory: "ImageOfGoods")

        }

    }

    func removePlistFile() {

        applicationRemoveFileAtPath("data.plist", directory: "ImageOfGoods")        

    }

    // 获取程序的document

    func applicationDocumentPath() ->String{

        let application = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)

        let documentPathString = application[0] as String

        return documentPathString

    }

    // 拼接文件路径

    func applicationFilePath(fileName: String ,directory: String) ->String {

        var docuPath = applicationDocumentPath()

        if directory.isEmpty {

            return docuPath.stringByAppendingPathComponent(fileName)

        }else{

            return docuPath.stringByAppendingPathComponent("\(directory)/\(fileName)")

        }

    }

    // 指定路径下是否存在 特定 “文件” 或 “文件夹”

    func applicationFileExistAtPath(fileTypeDirectory: Bool ,fileName: String ,directory: String) ->Bool {

        var filePath = applicationFilePath(fileName, directory: directory)

        if fileTypeDirectory {//普通文件（图片、plist、txt等等）

            return NSFileManager.defaultManager().fileExistsAtPath(filePath)

        }else{//文件夹

            //UnsafeMutablePointer<ObjCBool> 不能再直接使用  Bool  类型

            var isDir : ObjCBool = false

            return NSFileManager.defaultManager().fileExistsAtPath(filePath, isDirectory: &isDir)

        }

    }

    // 创建文件 或 文件夹在指定路径下

    func applicationCreatFileAtPath(#fileTypeDirectory: Bool ,fileName: String ,directory: String) ->Bool{

        var filePath = applicationFilePath(fileName, directory: directory)

        if fileTypeDirectory {//普通文件（图片、plist、txt等等）

            return NSFileManager.defaultManager().createDirectoryAtPath(filePath, withIntermediateDirectories: true, attributes: nil, error: nil)

        }else{//文件夹

            return NSFileManager.defaultManager().createFileAtPath(filePath, contents: nil, attributes: nil)

        }

    }

    // 移除指定路径下地文件中

    func applicationRemoveFileAtPath(fileName: String ,directory: String) -> Bool{

        var filePath = applicationFilePath(fileName, directory: directory)

        return NSFileManager.defaultManager().removeItemAtPath(filePath, error: nil)

    }

    // 向指定路径下地文件中写入数据

    func applicationWriteDataToFileAtPath(#dataTypeArray: Bool ,content:AnyObject ,fileName: String ,directory: String) -> Bool{

        var filePath = applicationFilePath(fileName, directory: directory)

        if dataTypeArray {

            return (content as NSArray).writeToFile(filePath, atomically: true)

        }else{

            return (content as NSDictionary).writeToFile(filePath, atomically: true)

        }

    }

    // 读取特定文件中数据（如：plist、text等）

    func applicationReadDataToFileAtPath(#dataTypeArray: Bool ,fileName: String ,directory: String) -> AnyObject{

        var filePath = applicationFilePath(fileName, directory: directory)

        if dataTypeArray {

            return NSArray(contentsOfFile: filePath)!

        }else{

            return NSDictionary(contentsOfFile: filePath)!

        }

    }

    // 读取文件夹中所有子文件（如：photo文件夹中所有image）

    func applicationReadFileOfDirectoryAtPath(fileName: String ,directory: String) -> AnyObject{

        var filePath = applicationFilePath(fileName, directory: directory)

        var content = NSFileManager.defaultManager().contentsOfDirectoryAtPath(filePath, error: nil)

        return content!

    }

    override func didReceiveMemoryWarning() {

        super.didReceiveMemoryWarning()

        // Dispose of any resources that can be recreated.

    }

}