关于ios:iOS文件操作

文件操作

沙盒门路

NSHomeDirectory()
tmp 长期门路，随时会被删除
Documents 会备份，不容许存储缓存信息

Library

caches 缓存文件
Preferences 偏好设置，能够用来保留账号

获取文件信息

let cachesDictionary = NSSearchPathForDirectoriesInDomains(.cachesDirectory, .userDomainMask, true)[0]let dist = cachesDictionary.appendingPathComponent("a/b/c.txt")let fileManager = FileManager.defaultdo {    let attributes = try fileManager.attributesOfItem(atPath: dist)    let fileSize = attributes[.size] as! UInt64 // 获取文件大小    print("File size: \(fileSize) bytes")} catch {    print(error)}

获取某个文件的所有子门路

let subPaths = fileManager.subpaths(atPath: "path")

判断是否是文件夹

var isDirectory: ObjCBool = falselet isExist = fileManager.fileExists(atPath: "path", isDirectory: &isDirectory)