ios 从 Document 目录中的目录中删除文件？
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Delete files from directory inside Document directory?
提问by joern
I have created a Temp directory to store some files:
我创建了一个临时目录来存储一些文件：
//MARK: -create save delete from directory
func createTempDirectoryToStoreFile(){
var error: NSError?
let paths = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.UserDomainMask, true)
let documentsDirectory: AnyObject = paths[0]
tempPath = documentsDirectory.stringByAppendingPathComponent("Temp")
if (!NSFileManager.defaultManager().fileExistsAtPath(tempPath!)) {
NSFileManager.defaultManager() .createDirectoryAtPath(tempPath!, withIntermediateDirectories: false, attributes: nil, error: &error)
}
}
It's fine, now I want to delete all the files that are inside the directory... I tried as below:
没关系，现在我想删除目录中的所有文件......我尝试如下：
func clearAllFilesFromTempDirectory(){
var error: NSErrorPointer = nil
let dirPath = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] as! String
var tempDirPath = dirPath.stringByAppendingPathComponent("Temp")
var directoryContents: NSArray = fileManager.contentsOfDirectoryAtPath(tempDirPath, error: error)!
if error == nil {
for path in directoryContents {
let fullPath = dirPath.stringByAppendingPathComponent(path as! String)
let removeSuccess = fileManager.removeItemAtPath(fullPath, error: nil)
}
}else{
println("seomthing went worng \(error)")
}
}
I notice that files are still there... What am I doing wrong?
我注意到文件仍然存在......我做错了什么？
采纳答案by rckoenes
Two things, use the tempdirectory and second pass an error to the fileManager.removeItemAtPathand place it in a if to see what failed. Also you should not be checking if the error is set but rather whether a methods has return data.
两件事，使用temp目录，然后将错误传递给fileManager.removeItemAtPath并将其放在 if 中以查看失败的内容。此外，您不应该检查是否设置了错误，而是检查方法是否具有返回数据。
func clearAllFilesFromTempDirectory(){
var error: NSErrorPointer = nil
let dirPath = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] as! String
var tempDirPath = dirPath.stringByAppendingPathComponent("Temp")
var directoryContents: NSArray = fileManager.contentsOfDirectoryAtPath(tempDirPath, error: error)?
if directoryContents != nil {
for path in directoryContents {
let fullPath = dirPath.stringByAppendingPathComponent(path as! String)
if fileManager.removeItemAtPath(fullPath, error: error) == false {
println("Could not delete file: \(error)")
}
}
} else {
println("Could not retrieve directory: \(error)")
}
}
To get the correct temporary directory use NSTemporaryDirectory()
要获得正确的临时目录使用 NSTemporaryDirectory()
回答by joern
In case anyone needs this for the latest Swift / Xcode versions: here is an example to remove all files from the temp folder:
如果有人需要最新的 Swift / Xcode 版本：这里是从临时文件夹中删除所有文件的示例：
Swift 2.x:
斯威夫特 2.x：
func clearTempFolder() {
let fileManager = NSFileManager.defaultManager()
let tempFolderPath = NSTemporaryDirectory()
do {
let filePaths = try fileManager.contentsOfDirectoryAtPath(tempFolderPath)
for filePath in filePaths {
try fileManager.removeItemAtPath(tempFolderPath + filePath)
}
} catch {
print("Could not clear temp folder: \(error)")
}
}
Swift 3.xand Swift 4:
Swift 3.x和Swift 4：
func clearTempFolder() {
let fileManager = FileManager.default
let tempFolderPath = NSTemporaryDirectory()
do {
let filePaths = try fileManager.contentsOfDirectory(atPath: tempFolderPath)
for filePath in filePaths {
try fileManager.removeItem(atPath: tempFolderPath + filePath)
}
} catch {
print("Could not clear temp folder: \(error)")
}
}
回答by Maksim Kniazev
Swift 3:
斯威夫特 3：
func clearTempFolder() {
let fileManager = FileManager.default
let tempFolderPath = NSTemporaryDirectory()
do {
let filePaths = try fileManager.contentsOfDirectory(atPath: tempFolderPath)
for filePath in filePaths {
try fileManager.removeItem(atPath: NSTemporaryDirectory() + filePath)
}
} catch let error as NSError {
print("Could not clear temp folder: \(error.debugDescription)")
}
}
回答by HixField
Swift 4.0example that removes all files from an example folder "diskcache" in the documents directory. I found the above examples unclear because they used the NSTemporaryDirectory() + filePathwhich is not "url" style. For your convenience:
Swift 4.0示例，从diskcache文档目录中的示例文件夹“ ”中删除所有文件。我发现上面的例子不清楚，因为他们使用的NSTemporaryDirectory() + filePath不是“url”样式。为了您的方便：
func clearDiskCache() {
let fileManager = FileManager.default
let myDocuments = fileManager.urls(for: .documentDirectory, in: .userDomainMask).first!
let diskCacheStorageBaseUrl = myDocuments.appendingPathComponent("diskCache")
guard let filePaths = try? fileManager.contentsOfDirectory(at: diskCacheStorageBaseUrl, includingPropertiesForKeys: nil, options: []) else { return }
for filePath in filePaths {
try? fileManager.removeItem(at: filePath)
}
}
回答by Hi?n ??
Remove all files From Document Directory: Swift 4
从文档目录中删除所有文件：Swift 4
func clearAllFile() {
let fileManager = FileManager.default
let myDocuments = fileManager.urls(for: .documentDirectory, in: .userDomainMask).first!
do {
try fileManager.removeItem(at: myDocuments)
} catch {
return
}
}
回答by Sandip Patel - SM
Create Temp Folder in Document Directory (Swift 4)
在文档目录中创建临时文件夹 (Swift 4)
func getDocumentsDirectory() -> URL {
// let paths = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)
// return paths[0]
let fileManager = FileManager.default
if let tDocumentDirectory = fileManager.urls(for: .documentDirectory, in: .userDomainMask).first {
let filePath = tDocumentDirectory.appendingPathComponent("MY_TEMP")
if !fileManager.fileExists(atPath: filePath.path) {
do {
try fileManager.createDirectory(atPath: filePath.path, withIntermediateDirectories: true, attributes: nil)
} catch {
NSLog("Couldn't create folder in document directory")
NSLog("==> Document directory is: \(filePath)")
return fileManager.urls(for: .documentDirectory, in: .userDomainMask).first!
}
}
NSLog("==> Document directory is: \(filePath)")
return filePath
}
return fileManager.urls(for: .documentDirectory, in: .userDomainMask).first!
}
Remove Files From Temp Directory: (Swift 4)
从临时目录中删除文件：（Swift 4）
func clearAllFilesFromTempDirectory(){
let fileManager = FileManager.default
do {
let strTempPath = getDocumentsDirectory().path
let filePaths = try fileManager.contentsOfDirectory(atPath: strTempPath)
for filePath in filePaths {
try fileManager.removeItem(atPath: strTempPath + "/" + filePath)
}
} catch {
print("Could not clear temp folder: \(error)")
}
}
回答by dimo hamdy
Using Files
使用文件
https://github.com/JohnSundell/Files
https://github.com/JohnSundell/Files
do {
for folder:Folder in (FileSystem().documentFolder?.subfolders)! {
try folder.delete()
}
} catch _ {
print("Error")
}
