刚刚写完公司项目，发现网上swift NSFileManager文件管理的文章都是swift5之前的语法。鉴于swift5已经趋于稳定，下面分享一下增删改查的代码。
一、如果不存在文件夹，则创建新的文件夹。并返回bool值
//获取沙盒路径
let documentPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).first! as NSString
let fileManager = FileManager.default
let filePath = documentPath as String + "/" + folderPath
let exist = fileManager.fileExists(atPath: filePath)
if !exist {
try! fileManager.createDirectory(atPath: filePath,withIntermediateDirectories: true, attributes: nil)
}
return exist
}
二、获取指定路径下所有文件名
遍历方法有很多种，这只是其中一种
func getAllFileName(folderPath: String)->[String]{
let documentPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).first! as NSString
let manager = FileManager.default
let fileUrl = documentPath as String + "/" + folderPath
let subPaths = manager.subpaths(atPath: fileUrl)
let array = subPaths?.filter({$0 != ".DS_Store"})
return array!
}
三、删除文件
//删除置指定路径的文件，并返回Bool值。
func deleteFile(folderPath: String, fileName: String)->Bool{
var success = false let documentPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).first! as NSString
let manager = FileManager.default
let fileUrl = documentPath as String + "/" + folderPath
let subPaths = manager.subpaths(atPath: fileUrl)
let removePath = fileUrl + "/" + fileName
for fileStr in subPaths!{
if fileName == fileStr {
try! manager.removeItem(atPath: removePath)
success = true
}
}
return success
}
四、写入文件
//传入指定路径，文件名。
func openICloudDrive(folderUrl : String,folderName : String{
let documentPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).first! as NSString
let manager = FileManager.default
let fileManager = FileManager.default
let filePath = documentPath as String + "/" + self.folderUrl!
let exist = fileManager.fileExists(atPath: filePath)
if !exist {
try! fileManager.createDirectory(atPath: filePath,withIntermediateDirectories: true, attributes: nil)
}
let createFilePath = filePath + "/" + self.folderName!
if manager.fileExists(atPath: createFilePath) {
print("该路径下已经存在同名文件，文件创建失败")
} else {
let urlStr = url.absoluteString
let data = urlStr.data(using: String.Encoding.utf8)
let isSuccess = manager.createFile(atPath: createFilePath, contents: data!, attributes: nil)
print(isSuccess ? "文件创建成功" : "文件创建失败")
}
以上就是在swift5语法下的文件管理几种常见的操作。之后会陆续更新swift，感兴趣的可以点关注了～
