1.获取文件/文件夹大小
//文件管理者
static let mFileManager = NSFileManager.defaultManager()
static func getFileSize(filePath:String)->Int{
var totalSize:Int = 0
//判断字符串是否为文件/文件夹
var isDir: ObjCBool = ObjCBool(false)
let exists:Bool = mFileManager.fileExistsAtPath(filePath, isDirectory: &isDir)
if exists {
if isDir {
let subFileNames:NSArray = mFileManager.subpathsAtPath(filePath)!
for subFileName in subFileNames {
let subFilePath = (filePath as NSString).stringByAppendingPathComponent(subFileName as! String)
totalSize += getFileSize(subFilePath)
}
}else{
let attr:NSDictionary = try! mFileManager.attributesOfItemAtPath(filePath)
let size = attr["NSFileSize"] as! Int
totalSize += size
}
}else{
return 0
}
return totalSize
}
//扩展Double转化为String保留多少位
extension Double {
func format(f: String) -> String {
return String(format: "%\(f)f", self)
}
}
//转化为显示字符串
static func getSizeStr(fileSize:Int) -> String{
if fileSize == 0 {
return ""
}
if fileSize > 1024 * 1024 {
return "\((Double(fileSize)/(1024*1024)).format(".2"))MB"
}else if fileSize > 1024{
return "\(fileSize/1024)KB"
}
return "\(fileSize)B"
}