ios – 如何在Swift中以编程方式获取iPad / iPhone应用程序的大小

func getAppSize(){
    let paths : NSArray = NSSearchPathForDirectoriesInDomains(.LibraryDirectory,.UserDomainMask,truE)
    var errorP = NSErrorPointer()
    let pathDictionary: NSDictionary = NSFileManager.defaultManager().attributesOfFileSystemForPath(paths.firstObject as String,error: errorp)!
    if(pathDictionary.count != 0){
        var fileSystemSizeInBytes: Double = pathDictionary.objectForKey("NSFileSystemSize") as Double
        var fileSystemSizeInMegaBytes : Double = fileSystemSizeInBYTES/1000000
        println("@R_564_10586@l Space: \(fileSystemSizeInMegaBytes) MB")
    }else{

    }
}

let NSFileSystemSize: NSString!
let NSFileSystemFreeSize: NSString!
let NSFileSystemNodes: NSString!
let NSFileSystemFreeNodes: NSString!
let NSFileSystemnumber: NSString!

//Make http request Ect... before here...
if(data.length > 1000){
    let documentPath = NSSearchPathForDirectoriesInDomains(.LibraryDirectory,truE)
    let uuid = NSUUID().UUIDString
    let localUrl = uuid + ".mp3"
    let destPath = (documentPath[0] as String) + "/" + localUrl
    data.writeToFile(destPath,atomically: truE)
    var error: NSErrorPointer = nil
    data.writeToFile(destPath,options: NSDataWriTingOptions.DataWriTingAtomic,error: error)
    if(error != nil){
        println("data write error: \(error.memory?.localizedDescription)")
    }
}

According to the docs,“OS X和iOS中的文件系统处理数据文件,应用程序以及与操作系统本身相关的文件的持久存储.”同样是 according to the docs,“NSBundle对象表示文件系统中可以在程序中使用的代码和资源的位置”,因此您的应用程序的主包是其文件所在的位置.根据 this link,每个iOS应用程序都包含一个包,文档目录,库和tmp.

要获取应用程序的总大小,请枚举包,文档,库和tmp子路径,例如：

func appSize() {

    // Go through the app's bundle
    let bundlePath = NSBundle.mainBundle().bundlePath
    let bundleArray:NSArray = NSFileManager.defaultManager().subpathsOfDirectoryAtPath(bundlePath,error: nil)!
    let bundleEnumerator = bundleArray.objectEnumerator()
    var fileSize: UInt64 = 0

    while let filename:string = bundleEnumerator.nextObject() as? String {
        let fileDictionary:NSDictionary = NSFileManager.defaultManager().attributesOfItemAtPath(bundlePath.StringByAppendingPathComponent(fileName),error: nil)!
        fileSize += fileDictionary.fileSize();
    }

    // Go through the app's document directory
    let documentDirectory:NSArray = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory,truE)
    let documentDirectoryPath:NSString = documentDirectory[0] as NSString
    let documentDirectoryArray:NSArray = NSFileManager.defaultManager().subpathsOfDirectoryAtPath(documentDirectoryPath,error: nil)!
    let documentDirectoryEnumerator = documentDirectoryArray.objectEnumerator()

    while let file:string = documentDirectoryEnumerator.nextObject() as? String {
        let attributes:NSDictionary = NSFileManager.defaultManager().attributesOfItemAtPath(documentDirectoryPath.StringByAppendingPathComponent(filE),error: nil)!
        fileSize += attributes.fileSize();
    }

    // Go through the app's library directory
    let libraryDirectory:NSArray = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.LibraryDirectory,NSSearchPathDomainMask.UserDomainMask,truE)
    let libraryDirectoryPath:NSString = libraryDirectory[0] as NSString
    let libraryDirectoryArray:NSArray = NSFileManager.defaultManager().subpathsOfDirectoryAtPath(libraryDirectoryPath,error: nil)!
    let libraryDirectoryEnumerator = libraryDirectoryArray.objectEnumerator()

    while let file:string = libraryDirectoryEnumerator.nextObject() as? String {
        let attributes:NSDictionary = NSFileManager.defaultManager().attributesOfItemAtPath(libraryDirectoryPath.StringByAppendingPathComponent(filE),error: nil)!
        fileSize += attributes.fileSize();
    }

    // Go through the app's tmp directory
    let tmpDirectoryPath:NSString = NstemporaryDirectory()
    let tmpDirectoryArray:NSArray = NSFileManager.defaultManager().subpathsOfDirectoryAtPath(tmpDirectoryPath,error: nil)!
    let tmpDirectoryEnumerator = tmpDirectoryArray.objectEnumerator()

    while let file:string = tmpDirectoryEnumerator.nextObject() as? String {
        let attributes:NSDictionary = NSFileManager.defaultManager().attributesOfItemAtPath(tmpDirectoryPath.StringByAppendingPathComponent(filE),error: nil)!
        fileSize += attributes.fileSize();
    }

    var fileSystemSizeInMegaBytes : Double = Double(fileSizE)/1000000
    println("@R_564_10586@l App Space: \(fileSystemSizeInMegaBytes) MB")
}