在Swift中写入plist文件

override func viewDidLoad() {
    super.viewDidLoad()


    let path = NSBundle.mainBundle().pathForResource("favCities",ofType: "plist")
    var plistArray = NSArray(contentsOfFile: path) as [Dictionary<String,String>]

    var addDic: Dictionary = ["ZMV": "TEST","Name": "TEST","Country": "TEST"]
    plistArray += addDic
    (plistArray as NSArray).writeToFile(path,atomically: true)

    var plistArray2 = NSArray(contentsOfFile: path)

    for tempDict1 in plistArray2 {
        var tempDict2: NSDictionary = tempDict1 as NSDictionary
        var cityName: String = tempDict2.valueForKey("Name") as String
        var cityZMV: String = tempDict2.valueForKey("ZMV") as String
        var cityCountry: String = tempDict2.valueForKey("Country") as String
        println("City: (cityName),ZMV: (cityZMV),Country: (cityCountry)")
    }

乍一看,一切都运作良好.输出如下所示：

City: Moscow,ZMV: 00000.1.27612,Country: RU
City: New York,ZMV: 10001.5.99999,Country: US
City: TEST,ZMV: TEST,Country: TEST

但是当我打断应用程序时,我发现我的文件favCities.plist没有改变.还有两个值.这些值 – 城市：TEST,ZMV：TEST,国家：TEST – 未添加.如果我重新启动应用程序,那么我再次看到3行输出,尽管应该有4行.

怎么了？

更新：

我把代码更改为：

override func viewDidLoad() {
    super.viewDidLoad()

    let fileManager = (NSFileManager.defaultManager())
    let directorys : [String]? = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory,NSSearchPathDomainMask.AllDomainsMask,true) as? [String]

    if (directorys! != nil){
        let directories:[String] = directorys!;
        let dictionary = directories[0];

        let plistfile = "favCities.plist"
        let plistpath = dictionary.stringByAppendingPathComponent(plistfile);

        println("(plistpath)")

        var plistArray = NSArray(contentsOfFile: plistpath) as [Dictionary<String,String>]

        var addDic: Dictionary = ["ZMV": "TEST","Country": "TEST"]
        plistArray += addDic

        (plistArray as NSArray).writeToFile(plistpath,atomically: false)

        var plistArray2 = NSArray(contentsOfFile: plistpath)

        for tempDict1 in plistArray2 {
            var tempDict2: NSDictionary = tempDict1 as NSDictionary
            var cityName: String = tempDict2.valueForKey("Name") as String
            var cityZMV: String = tempDict2.valueForKey("ZMV") as String
            var cityCountry: String = tempDict2.valueForKey("Country") as String
            println("City: (cityName),Country: (cityCountry)")
        }
    }
    else {
        println("ERROR!")
    }

}

现在,当您运行应用程序时,输出中的行数会增加：

City: Moscow,Country: TEST
City: TEST,Country: TEST
........

但！如果查看文件favCities.plist,它位于项目文件夹(Xcode中的Project Navigator)中,它仍然保持不变 – 有两行！

如果沿着路径走,它存储在变量plistpath中 – / Users / admin / Library / Developer / CoreSimulator / Devices / 55FD9B7F-78F6-47E2-9874-AF30A21CD4A6 / data / Containers / Data / Application / DEE6C3C8-6A44-4255 -9A87-2CEF6082A63A /文档/

然后还有一个文件favCities.plist.它包含构成应用程序的所有更改.我究竟做错了什么？如何查看位于项目文件夹(Project Navigator)中的文件中的所有更改？