The cache.db-wal file have the sensitive information in my application.Need to remove the cache files in Caches directory.
This should work for you.
let fileManager = NSFileManager.defaultManager()
let documentsUrl = NSFileManager.defaultManager().URLsForDirectory(.CachesDirectory, inDomains: .UserDomainMask).first! as NSURL
let documentsPath = documentsUrl.path
do {
if let documentPath = documentsPath
{
let fileNames = try fileManager.contentsOfDirectoryAtPath("\(documentPath)")
for fileName in fileNames {
if (fileName == "cache.db-wal")
{
let filePathName = "\(documentPath)/\(fileName)"
try fileManager.removeItemAtPath(filePathName)
}
}
let files = try fileManager.contentsOfDirectoryAtPath("\(documentPath)")
}
} catch {
print("Could not clear: \(error)")
}
In swift 3.1
** In my case i wanted to remove JSON data through the folder so i named it as "fsCachedData" you can change name accordingly..**
func removeCache() {
let caches = (NSSearchPathForDirectoriesInDomains(FileManager.SearchPathDirectory.cachesDirectory, FileManager.SearchPathDomainMask.userDomainMask, true)[0])
let appId = Bundle.main.infoDictionary!["CFBundleIdentifier"] as! String
let path = String(format:"%#/%#/Cache.db-wal",caches, appId)
do {
try FileManager.default.removeItem(atPath: path)
} catch {
print("ERROR DESCRIPTION: \(error)")
}
}
swift 4
func removeNetworkDictionaryCache() {
let caches = (NSSearchPathForDirectoriesInDomains(FileManager.SearchPathDirectory.cachesDirectory, FileManager.SearchPathDomainMask.userDomainMask, true)[0])
let appId = Bundle.main.infoDictionary!["CFBundleIdentifier"] as! String
let path = String(format:"%#/%#/Cache.db-wal",caches, appId)
do {
try FileManager.default.removeItem(atPath: path)
} catch {
print("ERROR DESCRIPTION: \(error)")
}
}
In Swift 5.2 solution (Just converted code)
func removeNetworkCache() {
let caches = (NSSearchPathForDirectoriesInDomains(FileManager.SearchPathDirectory.cachesDirectory, FileManager.SearchPathDomainMask.userDomainMask, true)[0])
let appId = Bundle.main.infoDictionary!["CFBundleIdentifier"] as! String
let path = String(format:"%#/%#/Cache.db-wal",caches, appId)
do {
try FileManager.default.removeItem(atPath: path)
} catch {
print("ERROR DESCRIPTION: \(error)")
}
}
I could find a solution for the above question.
func removeNetworkCache() {
let caches = (NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.CachesDirectory, NSSearchPathDomainMask.UserDomainMask, true)[0])
let appId = NSBundle.mainBundle().infoDictionary!["CFBundleIdentifier"] as! String
let path = String(format:"%#/%#/Cache.db-wal",caches, appId)
do {
try NSFileManager.defaultManager().removeItemAtPath(path)
} catch {
print("ERROR DESCRIPTION: \(error)")
}
}
Related
I am writing and reading files from my iOS application:
func saveChecklistItems() {
let data = NSMutableData()
let archiver = NSKeyedArchiver(forWritingWith: data)
archiver.encode(items, forKey: "ChecklistItems")
archiver.finishEncoding()
print("save \(dataFileDir())")
data.write(toFile: dataFileDir(), atomically: true)
}
func loadChecklistItems() {
print("load \(dataFileDir())")
let path = dataFileDir()
if FileManager.default.fileExists(atPath: path) {
if let data = NSData.init(contentsOfFile: path) {
do {
let unarchiver = try NSKeyedUnarchiver(forReadingFrom: data as Data)
items = unarchiver.decodeObject(forKey: "ChecklistItems") as! [CheckListItem]
unarchiver.finishDecoding()
} catch {
print(error)
}
}
}
}
func documentsDirectory() -> String {
let paths = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true) as [String]
return paths[0]
}
func dataFileDir() -> String {
return documentsDirectory().appending("Checklists.plist")
}
But every time I press Run in Xcode application is deployed on my iPhone with new ID:
save
/var/mobile/Containers/Data/Application/4684F231-7A41-461C-AD5C-FB0F66A9DA31/DocumentsChecklists.plist
load
/var/mobile/Containers/Data/Application/CFE42D59-6F3F-4D47-96B5-4F81C640127A/DocumentsChecklists.plist
It is my first steps in iOS development and I am wondering what do I need to do in this case ? Set application id as static ? Or something else ?
I would recommend that you use URL instead of strings when working with folders and files
func documentsDirectory() -> URL {
let paths = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)
return paths[0]
}
func dataFileDir() -> URL {
return documentsDirectory().appendingPathComponent("Checklists.plist")
}
and change your write to
try data.write(to: dataFileDir(), options: .atomic)
I feel like I am missing something major as I don't receive any errors or null values, but anytime I try to retrieve my image it returns "" because it doesn't exist?
This is how I am passing the image data:
URLSession.shared.dataTask(with: url! as URL, completionHandler:{ (data, response, error) in
//if download error
if error != nil{
print(error!)
return
}
guard let imageData = UIImage(data: data!) else { return }
DispatchQueue.main.async{
self.imgPortrait.image = imageData
ImagePortrait().saveImageDocumentDirectory(image: imageData)
}
The data is displayed on imgPortrait completely fine. Here are the rest of the functions where: /\(userUID)/\(CharacterSelection.sharedInstance.getActiveCharacterName()) is optional. When it goes to retrieve the image and when it saves it I can confirm the paths are exactly the same. I feel like it's how I am saving the image with createFile, but I am unsure.
func saveImageDocumentDirectory(image: UIImage){
if let userUID = Auth.auth().currentUser?.uid{
let fileManager = FileManager.default
let paths = (getDirectoryPath() as NSString).appendingPathComponent("/\(userUID)/\(CharacterSelection.sharedInstance.getActiveCharacterName())/characterPortrait.png")
createDirectory(name: (getDirectoryPath() as NSString) as String)
let imageData = UIImagePNGRepresentation(image)
fileManager.createFile(atPath: paths as String, contents: imageData, attributes: nil)
}
}
func getDirectoryPath() -> String {
let paths = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)
let documentsDirectory = paths[0]
return documentsDirectory
}
func getImage() -> String{
if let userUID = Auth.auth().currentUser?.uid{
let fileManager = FileManager.default
let imagePath = (self.getDirectoryPath() as NSString).appendingPathComponent("/\(userUID)/\(CharacterSelection.sharedInstance.getActiveCharacterName())/characterPortrait.png")
if fileManager.fileExists(atPath: imagePath){
return imagePath
}else{
print("No Image")
return ""
}
}
else{
return ""
}
}
func createDirectory(name: String){
let fileManager = FileManager.default
let paths = (getDirectoryPath() as NSString).appendingPathComponent(name)
if !fileManager.fileExists(atPath: paths){
try! fileManager.createDirectory(atPath: paths, withIntermediateDirectories: true, attributes: nil)
}else{
print("Directory is already created.")
}
}
Thanks in advance!
Well after a few hours I figured it out. Looks like the directory wasn't being created. Solved it by:
func saveImageDocumentDirectory(image: UIImage){
if let userUID = Auth.auth().currentUser?.uid{
let fileURL = try! FileManager.default.url(for: .documentDirectory, in: .userDomainMask, appropriateFor: nil, create: true).appendingPathComponent("\(userUID)_\(CharacterSelection.sharedInstance.getActiveCharacterName())_characterPortrait.png")
do {
try UIImagePNGRepresentation(image)?.write(to: fileURL, options: .atomic)
} catch {
print(error)
}
}
}
func getImage() -> UIImage{
if let userUID = Auth.auth().currentUser?.uid{
let nsDocumentDirectory = FileManager.SearchPathDirectory.documentDirectory
let nsUserDomainMask = FileManager.SearchPathDomainMask.userDomainMask
let paths = NSSearchPathForDirectoriesInDomains(nsDocumentDirectory, nsUserDomainMask, true)
if let dirPath = paths.first
{
let imageURL = URL(fileURLWithPath: dirPath).appendingPathComponent("\(userUID)_\(CharacterSelection.sharedInstance.getActiveCharacterName())_characterPortrait.png")
if let image = UIImage(contentsOfFile: imageURL.path){
return image
}
else{
print("Image isn't found.")
return UIImage(named: "default_portrait.png")!
}
}
else{
print("Image isn't found.")
return UIImage(named: "default_portrait.png")!
}
}
else{
print("Image isn't found.")
return UIImage(named: "default_portrait.png")!
}
}
I am using SSZipArchive to unzip files from a Url (http://www.colorado.edu/conflict/peace/download/peace.zip). For this I am using the function :
SSZipArchive.unzipFile(atPath: path, toDestination: documentsPath, progressHandler: {
Is it possible to extract files from Url using SSZipArchive ?
Is yes, how do I pass Url in atPath ?
You can't directly unzip without downloading the file from the URL.
This is how I do this,
func downLoad() {
let url : String = "http://www.colorado.edu/conflict/peace/download/peace.zip"
var localPath: NSURL?
Alamofire.download(.GET,url,
destination: { (temporaryURL, response) in
let directoryURL = NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)[0]
let pathComponent = response.suggestedFilename
localPath = directoryURL.URLByAppendingPathComponent(pathComponent!)
return localPath!
})
.response { (request, response, _, error) in
SwiftEventBus.post("DownloadedSuccessfully", sender: localPath!)
}
}
After downloading the content, unzip it where you want to.
SwiftEventBus.onMainThread(self, name:"DownloadedSuccessfully")
{
result in
let resultStatus = result.object as! NSURL
guard let zipPath: String = resultStatus.path! as String else {
return
}
guard let unZipPath = unzipPath() else {
return
}
let success = SSZipArchive.unzipFileAtPath(zipPath, toDestination: unZipPath)
print(unZipPath)
if !success {
return
}
}
I unzipped the file and stored it in the document directory
func unzipPath() -> String? {
let path = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0]
let url = NSURL(fileURLWithPath: path)
do {
try NSFileManager.defaultManager().createDirectoryAtURL(url, withIntermediateDirectories: true, attributes: nil)
} catch {
return nil
}
if let path = url.path {
return path
}
return nil
}
From there you can access the data of the file. Here I used third party frameworks Alamofire and swiftEventBus. Hope this works for you.
I downloaded some PDF files in my app and want to delete these on closing the application.
For some reason it does not work:
Creating the file:
let reference = "test.pdf"
let RequestURL = "http://xx/_PROJEKTE/xx\(self.reference)"
let ChartURL = NSURL(string: RequestURL)
//download file
let documentsUrl = NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask).first! as NSURL
let destinationUrl = documentsUrl.URLByAppendingPathComponent(ChartURL!.lastPathComponent!)
if NSFileManager().fileExistsAtPath(destinationUrl.path!) {
print("The file already exists at path")
} else {
// if the file doesn't exist
// just download the data from your url
if let ChartDataFromUrl = NSData(contentsOfURL: ChartURL!){
// after downloading your data you need to save it to your destination url
if ChartDataFromUrl.writeToURL(destinationUrl, atomically: true) {
print("file saved")
print(destinationUrl)
} else {
print("error saving file")
}
}
}
Then I want to call the test() function to remove the items, like this:
func test(){
let fileManager = NSFileManager.defaultManager()
let documentsUrl = NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask).first! as NSURL
do {
let filePaths = try fileManager.contentsOfDirectoryAtPath("\(documentsUrl)")
for filePath in filePaths {
try fileManager.removeItemAtPath(NSTemporaryDirectory() + filePath)
}
} catch {
print("Could not clear temp folder: \(error)")
}
}
This code works for me. I removed all the images that were cached.
private func test(){
let fileManager = NSFileManager.defaultManager()
let documentsUrl = NSFileManager.defaultManager().URLsForDirectory(.CachesDirectory, inDomains: .UserDomainMask).first! as NSURL
let documentsPath = documentsUrl.path
do {
if let documentPath = documentsPath
{
let fileNames = try fileManager.contentsOfDirectoryAtPath("\(documentPath)")
print("all files in cache: \(fileNames)")
for fileName in fileNames {
if (fileName.hasSuffix(".png"))
{
let filePathName = "\(documentPath)/\(fileName)"
try fileManager.removeItemAtPath(filePathName)
}
}
let files = try fileManager.contentsOfDirectoryAtPath("\(documentPath)")
print("all files in cache after deleting images: \(files)")
}
} catch {
print("Could not clear temp folder: \(error)")
}
}
**** Update swift 3 ****
let fileManager = FileManager.default
let documentsUrl = FileManager.default.urls(for: .cachesDirectory, in: .userDomainMask).first! as NSURL
let documentsPath = documentsUrl.path
do {
if let documentPath = documentsPath
{
let fileNames = try fileManager.contentsOfDirectory(atPath: "\(documentPath)")
print("all files in cache: \(fileNames)")
for fileName in fileNames {
if (fileName.hasSuffix(".png"))
{
let filePathName = "\(documentPath)/\(fileName)"
try fileManager.removeItem(atPath: filePathName)
}
}
let files = try fileManager.contentsOfDirectory(atPath: "\(documentPath)")
print("all files in cache after deleting images: \(files)")
}
} catch {
print("Could not clear temp folder: \(error)")
}
I believe your problem is on this line:
let filePaths = try fileManager.contentsOfDirectoryAtPath("\(documentsUrl)")
You're using contentsOfDirectoryAtPath() with something that is an NSURL. You choose either path strings or URLs, not try to mix them both. To pre-empty your possible next question, URLs are preferred. Try using contentsOfDirectoryAtURL() and removeItemAtURL().
Another curious thing you should look at once you resolve the above: why are you using NSTemporaryDirectory() for the file path when you try to delete? You're reading the document directory and should use that.
Swift 5:
Check out the FileManager.removeItem() method
// start with a file path, for example:
let fileUrl = FileManager.default.urls(
for: .documentDirectory,
in: .userDomainMask
).deletingPathExtension()
.appendingPathComponent(
"someDir/customFile.txt",
isDirectory: false
)
// check if file exists
// fileUrl.path converts file path object to String by stripping out `file://`
if FileManager.default.fileExists(atPath: fileUrl.path) {
// delete file
do {
try FileManager.default.removeItem(atPath: fileUrl.path)
} catch {
print("Could not delete file, probably read-only filesystem")
}
}
I am trying to save data to a plist file in swift, but the data isn't showing up as it was saved when the plist is read. This is the code I was using.
var documentsDirectory = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] as NSString
var path : NSString = documentsDirectory.stringByAppendingPathComponent("data.plist")
var data : NSMutableDictionary = NSMutableDictionary(contentsOfFile: path)
data.setObject(self.object, forKey: "key")
data.writeToFile(path, atomically: true)
Edit: I've heard that the best way to do this is write to the documents directory, so my question would be how should I write to a file in that directory?
Apparently the file is not in a writable location, so I created it in the documents directory.
var paths = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] as String
var path = paths.stringByAppendingPathComponent("data.plist")
var fileManager = NSFileManager.defaultManager()
if (!(fileManager.fileExistsAtPath(path)))
{
var bundle : NSString = NSBundle.mainBundle().pathForResource("data", ofType: "plist")
fileManager.copyItemAtPath(bundle, toPath: path, error:nil)
}
data.setObject(object, forKey: "object")
data.writeToFile(path, atomically: true)
Then, it has to be read from the documents directory.
var paths = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] as String
var path = paths.stringByAppendingPathComponent("data.plist")
let save = NSDictionary(contentsOfFile: path)
Swift 3:
func loadData() {
let paths = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true) as NSArray
let documentDirectory = paths[0] as! String
let path = documentDirectory.appending("myData.plist")
let fileManager = FileManager.default
if(!fileManager.fileExists(atPath: path)){
if let bundlePath = Bundle.main.path(forResource: "myData", ofType: "plist"){
let result = NSMutableDictionary(contentsOfFile: bundlePath)
print("Bundle file myData.plist is -> \(result?.description)")
do{
try fileManager.copyItem(atPath: bundlePath, toPath: path)
}catch{
print("copy failure.")
}
}else{
print("file myData.plist not found.")
}
}else{
print("file myData.plist already exits at path.")
}
let resultDictionary = NSMutableDictionary(contentsOfFile: path)
print("load myData.plist is ->\(resultDictionary?.description)")
let myDict = NSDictionary(contentsOfFile: path)
if let dict = myDict{
myItemValue = dict.object(forKey: myItemKey) as! String?
txtValue.text = myItemValue
}else{
print("load failure.")
}
}
Read and Write plist file in swift
Check in Xcode 10 swift 4.1
//TODO: for wtite in .plist file
let docsBaseURL = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first!
let customPlistURL = docsBaseURL.appendingPathComponent("custom.plist")
print(customPlistURL.absoluteString)
let dic:[String:Any] = ["key":"val"]
// Swift Dictionary To Data.
do {
let data = try PropertyListSerialization.data(fromPropertyList: dic, format: PropertyListSerialization.PropertyListFormat.binary, options: 0)
do {
try data.write(to: customPlistURL, options: .atomic)
print("Successfully write")
}catch (let err){
print(err.localizedDescription)
}
}catch (let err){
print(err.localizedDescription)
}
Use writeToFile:options:error: and see what the error says:
var error: NSError?
var bytes = NSKeyedArchiver.archivedDataWithRootObject(data)
if !bytes.writeToFile(path, options: nil, error: &error) {
if let actualError = error {
println(actualError)
}
}
struct Plist {
enum PlistError: ErrorType {
case FileNotWritten
case FileDoesNotExist
}
let name:String
var sourcePath:String? {
guard let path = NSBundle.mainBundle().pathForResource(name, ofType: "plist") else { return .None }
return path
}
var destPath:String? {
guard sourcePath != .None else { return .None }
let dir = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0]
return (dir as NSString).stringByAppendingPathComponent("\(name).plist")
}
init?(name:String) {
self.name = name
let fileManager = NSFileManager.defaultManager()
guard let source = sourcePath else { return nil }
guard let destination = destPath else { return nil }
guard fileManager.fileExistsAtPath(source) else { return nil }
if !fileManager.fileExistsAtPath(destination) {
do {
try fileManager.copyItemAtPath(source, toPath: destination)
} catch let error as NSError {
print("Unable to copy file. ERROR: \(error.localizedDescription)")
return nil
}
}
}
func getValuesInPlistFile() -> NSDictionary?{
let fileManager = NSFileManager.defaultManager()
if fileManager.fileExistsAtPath(destPath!) {
guard let dict = NSDictionary(contentsOfFile: destPath!) else { return .None }
return dict
} else {
return .None
}
}
func getMutablePlistFile() -> NSMutableDictionary?{
let fileManager = NSFileManager.defaultManager()
if fileManager.fileExistsAtPath(destPath!) {
guard let dict = NSMutableDictionary(contentsOfFile: destPath!) else { return .None }
return dict
} else {
return .None
}
}
func addValuesToPlistFile(dictionary:NSDictionary) throws {
let fileManager = NSFileManager.defaultManager()
if fileManager.fileExistsAtPath(destPath!) {
if !dictionary.writeToFile(destPath!, atomically: false) {
print("File not written successfully")
throw PlistError.FileNotWritten
}
} else {
throw PlistError.FileDoesNotExist
}
}
}
Now, implement below in your view controller.
if let plist = Plist(name: "plist file name") {
let dict = plist.getMutablePlistFile()!
dict["key"] = value
do {
try plist.addValuesToPlistFile(dict)
} catch {
print(error)
}
print(plist.getValuesInPlistFile())
} else {
print("Unable to get Plist")
}
From your Information Property List
Key
Privacy - Photo Library Additions Usage Description
Type
String
Value
"Your App Name" would like to access the photo gallery to manage your profile picture
updated swift code of Rebeloper:
let BedroomFloorKey = "BedroomFloor"
let BedroomWallKey = "BedroomWall"
var bedroomFloorID: AnyObject = 101
var bedroomWallID: AnyObject = 101
func saveGameData()
{
let paths = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true) as NSArray
let documentsDirectory = paths.objectAtIndex(0) as! NSString
let path = documentsDirectory.stringByAppendingPathComponent("GameData.plist")
let dict: NSMutableDictionary = ["XInitializerItem": "DoNotEverChangeMe"]
//saving values
dict.setObject(bedroomFloorID, forKey: BedroomFloorKey)
dict.setObject(bedroomWallID, forKey: BedroomWallKey)
//...
//writing to GameData.plist
dict.writeToFile(path, atomically: false)
let resultDictionary = NSMutableDictionary(contentsOfFile: path)
print("Saved GameData.plist file is --> \(resultDictionary?.description)")
self.loadGameData()
}//eom
func loadGameData() {
// getting path to GameData.plist
let paths = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true) as NSArray
let documentsDirectory = paths[0] as! NSString
let path = documentsDirectory.stringByAppendingPathComponent("GameData.plist")
// let path = documentsDirectory.stringByAppendingPathComponent("GameData.plist")
let fileManager = NSFileManager.defaultManager()
//check if file exists
if(!fileManager.fileExistsAtPath(path))
{
// If it doesn't, copy it from the default file in the Bundle
if let bundlePath = NSBundle.mainBundle().pathForResource("GameData", ofType: "plist")
{
let resultDictionary = NSMutableDictionary(contentsOfFile: bundlePath)
print("Bundle GameData.plist file is --> \(resultDictionary?.description)")
do
{
try fileManager.copyItemAtPath(bundlePath, toPath: path)
print("copy")
}
catch _
{
print("error failed loading data")
}
}
else
{
print("GameData.plist not found. Please, make sure it is part of the bundle.")
}
}
else
{
print("GameData.plist already exits at path.")
// use this to delete file from documents directory
//fileManager.removeItemAtPath(path, error: nil)
}
let resultDictionary = NSMutableDictionary(contentsOfFile: path)
print("Loaded GameData.plist file is --> \(resultDictionary?.description)")
let myDict = NSDictionary(contentsOfFile: path)
if let dict = myDict {
//loading values
bedroomFloorID = dict.objectForKey(BedroomFloorKey)!
bedroomWallID = dict.objectForKey(BedroomWallKey)!
//...
}
else
{
print("WARNING: Couldn't create dictionary from GameData.plist! Default values will be used!")
}
}//eom