Swift 获取文件（目录）属性（大小、创建/修改日期等）

获取文件属性主要用到FileManager的实例方法attributesOfItem(atPath:)

let filePath = "xxx"

do {
    let fileAttributes = try FileManager.default.attributesOfItem(atPath: filePath)
    if let fileSize:NSNumber = fileAttributes[FileAttributeKey.size] as! NSNumber? {
        print("File Size: \(fileSize.uint32Value)")
    }
    
    if let ownerName = fileAttributes[FileAttributeKey.ownerAccountName] {
        print("File Owner: \(ownerName)")
    }
 
    if let creationDate = fileAttributes[FileAttributeKey.creationDate] {
        print("File Creation Date: \(creationDate)")
    }
    
    if let modificationDate = fileAttributes[FileAttributeKey.modificationDate] {
        print("File Modification Date: \(modificationDate)")
    }
    
} catch let error as NSError {
    print("Get attributes errer: \(error)")
}

发现以上时间为GMT时间，需要转换为本地时间。附上将转换时区的方法，将以上方法替换为：

//将GMT时间转换为本地时间

//获取本地时区及与GMT的时间间隔
let timeZone = NSTimeZone.system
let interval: TimeInterval = TimeInterval(timeZone.secondsFromGMT())

if let creationDate = fileAttributes[FileAttributeKey.creationDate] {
    let localCreateDate = (creationDate as! NSDate).addingTimeInterval(interval)
    print("File Creation Date: \(localCreateDate)")
}

if let modificationDate = fileAttributes[FileAttributeKey.modificationDate] {
    let localModDate = (modificationDate as! NSDate).addingTimeInterval(interval)
    print("File Modification Date: \(localModDate)")
}