I am new in Swift. Since I update podfile I am facing issue in AWSS3
Cannot find type 'AWSS3TransferManagerUploadRequest' in scope
Cannot find type 'AWSS3TransferManagerDownloadRequest' in scope
There is also import AWSS3 in ViewController.
I am not understanding the problem. Did someone face the same issue?
I also check this https://stackoverflow.com/questions/32659346/awss3transfermanageruploadrequest-in-xcode-7
But it does not help.
var uploadRequests = Array<AWSS3TransferManagerUploadRequest?>()
var uploadFileURLs = Array<URL?>()
var downloadRequests = Array<AWSS3TransferManagerDownloadRequest?>()
func download(_ downloadRequest: AWSS3TransferManagerDownloadRequest) {
switch (downloadRequest.state) {
case .notStarted, .paused:
let transferManager = AWSS3TransferManager.default()
transferManager.download(downloadRequest).continueWith(block: { (task) -> AWSTask<AnyObject>? in
if let error = task.error {
if error.domain == AWSS3TransferManagerErrorDomain as String
&& AWSS3TransferManagerErrorType(rawValue: error.code) == AWSS3TransferManagerErrorType.paused {
print("Download paused.")
} else {
print("download failed: [\(error)]")
}
} else if let exception = task.error {
print("download failed: [\(exception)]")
} else {
DispatchQueue.main.async(execute: { () -> Void in
print("downloaded file url: \(downloadRequest.downloadingFileURL)")
// if let index = self.indexOfDownloadRequest(self.downloadRequests, downloadRequest: downloadRequest) {
// self.downloadRequests[index] = nil
// self.downloadFileURLs[index] = downloadRequest.downloadingFileURL
//
// let indexPath = NSIndexPath(forRow: index, inSection: 0)
// self.collectionView.reloadItemsAtIndexPaths([indexPath])
// }
})
}
return nil
})
break
default:
break
}
}
func downloadAll() {
for (_, value) in self.downloadRequests.enumerated() {
if let downloadRequest = value {
if downloadRequest.state == .notStarted
|| downloadRequest.state == .paused {
self.download(downloadRequest)
}
}
}
// self.collectionView.reloadData()
}
func listObjects() {
let s3 = AWSS3.default()
let listObjectsRequest = AWSS3ListObjectsRequest()
listObjectsRequest?.bucket = "dice-ios"
s3.listObjects(listObjectsRequest!).continueWith { (task) -> AnyObject? in
if let error = task.error {
print("listObjects failed: [\(error)]")
}
if let exception = task.error {
print("listObjects failed: [\(exception)]")
}
if let listObjectsOutput = task.result {
if let contents = listObjectsOutput.contents {
for s3Object in contents {
let downloadingFileURL = URL(fileURLWithPath: NSTemporaryDirectory()).appendingPathComponent("download").appendingPathComponent(s3Object.key!)
let downloadingFilePath = downloadingFileURL.path
if FileManager.default.fileExists(atPath: downloadingFilePath) {
self.downloadRequests.append(nil)
self.downloadFileURLs.append(downloadingFileURL)
} else {
let downloadRequest = AWSS3TransferManagerDownloadRequest()
downloadRequest?.bucket = "dice-ios"
downloadRequest?.key = s3Object.key
downloadRequest?.downloadingFileURL = downloadingFileURL
self.downloadRequests.append(downloadRequest)
self.downloadFileURLs.append(nil)
}
}
DispatchQueue.main.async(execute: { () -> Void in
// self.collectionView.reloadData()
})
}
}
return nil
}
}
My code is like this I am getting issue since I update the podfile.I am facing issue in AWS3 as it is updated. I need to know what to replace.
I coped with the same problem when I was integrating the pod named AWSS3.
I fixed it by installing the specific version of these pods.
Please check this URL
https://cocoapods.org/pods/AWSS3#changelog
In my case, I installed the v2.16.0.
I think it is concerning with the Xcode version.
pod 'AWSS3', '~> 2.16.0'
I hope this helps you.
You need to downgrade your AWSS3 pod version. Check the pod folder to see if the tool you're using is there (In my case, AWSS3TransferManager.h was missing from current version, downgraded to a version that had it).
Related
I am getting a folder url from user and then looking to find any mp3 files in that folder, the question itself in title and me just looking to use UTType in process.
As you can see I took all steps in codes just need last step in isMP3 function to finish the puzzle. So how can I use a path or URL and fining out the UTType of it and using it for comparing.
Also in my approach Xcode gave an error and says:
Cannot find 'UTType' in scope
Not sure why I have this error, normally it should Not be case, because it is type defined by Apple.
struct ContentView: View {
#State private var fileImporterIsPresented: Bool = false
var body: some View {
Button("Select your Folder") { fileImporterIsPresented = true }
.fileImporter(isPresented: $fileImporterIsPresented, allowedContentTypes: [.folder], allowsMultipleSelection: false, onCompletion: { result in
switch result {
case .success(let urls):
if let unwrappedURL: URL = urls.first {
if let contents = try? FileManager.default.contentsOfDirectory(atPath: unwrappedURL.path) {
contents.forEach { item in
if isMP3(path: unwrappedURL.path + "/" + item) {
print(item)
}
}
}
}
case .failure(let error):
print("Error selecting file \(error.localizedDescription)")
}
})
}
}
func isMP3(path: String) -> Bool {
// trying use UTType here
if URL(fileURLWithPath: path).??? == UTType.mp3 {
return true
}
else {
return false
}
}
To use UTType you have to import explicit package
import UniformTypeIdentifiers
it can be something like
func isMP3(path: String) -> Bool {
if let type = UTType(filenameExtension: URL(fileURLWithPath: path).pathExtension), type == UTType.mp3 {
return true
}
else {
return false
}
}
Here's another solution that uses URLResourceValues.contentType with a fallback to UTType(filenameExtension:):
import UniformTypeIdentifiers
func isMP3(path: String) -> Bool {
if let contentType = URL(fileURLWithPath: path).contentType,
contentType.conforms(to: .mp3)
{
return true
}
else {
return false
}
}
extension URL {
var contentType: UTType? {
if let resourceValues = try? resourceValues(forKeys: [.contentTypeKey]),
let contentType = resourceValues.contentType {
return contentType
} else if let contentType = UTType(filenameExtension: pathExtension) {
return contentType
} else {
return nil
}
}
}
This question already has answers here:
UIDocumentPickerViewController is not working when testing with my iPad but fine with simulators
(2 answers)
Closed 12 months ago.
Update: This code works in the simulator, but not on my device. Obviously, I'm needing it to work on both.
I've followed the tutorials, yet I cannot seem to get this feature to work. When the user selects the barButtonItem, DocumentPicker opens allowing the user to select a .txt file. I then take the URL to the selected file and attempt to return a string from it; however, I'm getting the following error: "The file “Test.txt” couldn’t be opened because you don’t have permission to view it." What am I missing? Did I fail to ask for permission somewhere? I've tried cleaning the build folder - didn't work.
#IBAction func importFileBtnTapped(_ sender: Any) {
selectFiles()
}
func selectFiles() {
let types = UTType.types(tag: "txt",
tagClass: UTTagClass.filenameExtension,
conformingTo: nil)
let documentPickerController = UIDocumentPickerViewController(forOpeningContentTypes: types)
documentPickerController.delegate = self
self.present(documentPickerController, animated: true, completion: nil)
}
func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentsAt urls: [URL]) {
guard let myURL = urls.first else {
let alert = SCLAlertView()
alert.showError("ERROR", subTitle: "Unable to retrieve document.")
return
}
let text = createStringFromSelectedFile(fileURL: myURL)
if text == "error" {
print("ERROR creating a string from the selected file.")
return
}
let separatedStrings = decipherString(text: text)
if separatedStrings.first == "error" {
print("ERROR deciphering the string in ClaimInfoViewController")
return
}
for string in separatedStrings {
print("\(string)")
}
print("import result: \(myURL)")
}
func documentPickerWasCancelled(_ controller: UIDocumentPickerViewController) {
dismiss(animated: true, completion: nil)
}
func createStringFromSelectedFile(fileURL: URL) -> String {
var text = String()
do {
text = try String(contentsOf: fileURL)
}
catch {
print("ERROR in the createStringFromSelectedFile function in ClaimInfoViewController")
print("The error: \(error.localizedDescription)")
let alert = SCLAlertView()
alert.showError("ERROR", subTitle: "Unable to read the file. Please try again.")
return "error"
}
return text
}
func decipherString(text: String) -> [String]{
let newText = text
let startIndexes = ["<Claim#",
"<File#",
"<DateOfLoss:"
]
var claimNumber = String()
var fileNumber = String()
var dateOfLoss = String()
for indexValue in startIndexes {
guard let index = newText.firstIndex(of: ">") else { return ["error"] }
let newString = String(newText[..<index])
if indexValue == "<Claim#" {
claimNumber = newString
}
else if indexValue == "<File#" {
fileNumber = newString
}
else if indexValue == "<DateOfLoss:" {
dateOfLoss = newString
}
}
let finalText = [claimNumber, fileNumber, dateOfLoss]
return finalText
}
Thanks to matt, who commented above, I was able to find out that it's a security issue. Adding this simple code resolved the issue:
let shouldStopAccessing = pickedFolderURL.startAccessingSecurityScopedResource()
defer {
if shouldStopAccessing {
pickedFolderURL.stopAccessingSecurityScopedResource()
}
}
I added it right before this line of code that can be seen above:
let text = createStringFromSelectedFile(fileURL: myURL)
I got this code from here: StackOverflow Post
I tried everything, read everywhere, but I'm unable to make a shared record editable by the user who received the link
Everything works fine except the edit performed by the invited user
here's the sharing code (like the WWDC16 video):
let sharingController = UICloudSharingController { (controller, preparationCompletionHandler) in
let share = CKShare(rootRecord: record)
share.publicPermission = .readWrite
share[CKShareTitleKey] = "Help me to improve data" as CKRecordValue
share[CKShareTypeKey] = "com.company.AppName" as CKRecordValue
let modifyRecordsOperation = CKModifyRecordsOperation( recordsToSave: [record, share], recordIDsToDelete: nil)
modifyRecordsOperation.modifyRecordsCompletionBlock = { (records, recordIDs, error) in
if let errorK = error {
print(errorK.localizedDescription)
}
preparationCompletionHandler(share, CKContainer.default(), error)
}
CKContainer.default().privateCloudDatabase.add(modifyRecordsOperation)
}
sharingController.availablePermissions = [.allowPublic, .allowPrivate, .allowReadWrite]
sharingController.delegate = self
controller.present(sharingController, animated: true)
The console always print:
PrivateDB can't be used to access another user's zone
thank you
when you retrive the shared record you need to add the operation to the sharedDatabase:
func fetchShare(_ metadata: CKShareMetadata) {
debugPrint("fetchShare")
let operation = CKFetchRecordsOperation(recordIDs: [metadata.rootRecordID])
operation.perRecordCompletionBlock = { record, _, error in
if let errore = error { debugPrint("Error fetch shared record \(errore.localizedDescription)") }
if let recordOk = record {
DispatchQueue.main.async() {
self.storage.append(recordOk)
}
}
}
operation.fetchRecordsCompletionBlock = { (recordsByRecordID, error) in
if let errore = error { debugPrint("Error fetch shared record \(errore.localizedDescription)") }
}
CKContainer.default().sharedCloudDatabase.add(operation)
}
but now there is a problem when you try to update the record, you need to know who is the owner, if the owner is the one who shared the record you need to save to the private db, if the owner is another person you need to save to the shared db... so:
func updateOrSaveRecord(_ record:CKRecord, update:Bool) {
var db : CKDatabase
if update == true {
guard let creatorUserID = record.creatorUserRecordID else { return }
if record.share != nil && creatorUserID.recordName != CKCurrentUserDefaultName {
debugPrint("record shared from another user")
db = CKContainer.default().sharedCloudDatabase
} else {
debugPrint("private record")
db = CKContainer.default().privateCloudDatabase
}
} else { db = CKContainer.default().privateCloudDatabase }
db.save(record) { (savedRecord, error) in
if let errorTest = error {
print(errorTest.localizedDescription)
} else {
if let recordOK = savedRecord {
DispatchQueue.main.async {
if update == false {
self.storage.append(recordOK)
} else {
self.dettCont?.updateScreen()
}
self.listCont?.tableView.reloadData()
}
}
}
}
}
to know if the record was created by the current user the trick is to compare against CKCurrentUserDefaultName
I am trying to make a program in Swift 2 that runs and gets the result of an AppleScript script.
Here is my code:
import Foundation
func runAppleScript(script:String) -> String
{
let errorInfo = AutoreleasingUnsafeMutablePointer<NSDictionary?>()
let startAtLoginScript: NSAppleScript = NSAppleScript(source: script)!
let theDiscriptor:NSAppleEventDescriptor = startAtLoginScript.executeAndReturnError(errorInfo)
let theResult:String = theDiscriptor.stringValue! //This is whats causing the error
return theResult
}
let scriptResult = runAppleScript("tell app \"Spotify\" to playpause")
NSLog("\(scriptResult)")
The problem is the program crashes and outputs:
fatal error: unexpectedly found nil while unwrapping an Optional value
in the console. I have also tried if let else, however that does not work either. How would I fix this issue?
This was tested using a OS X Command Line template using the swift language.
Actually the error could come from NSAppleScript(source: script)! so the proper solution is to return an Optional String and not use force unwrapping at all:
func runAppleScript(script:String) -> String? {
let errorInfo: AutoreleasingUnsafeMutablePointer<NSDictionary?> = nil
let startAtLoginScript = NSAppleScript(source: script)
let theDescriptor = startAtLoginScript?.executeAndReturnError(errorInfo)
return theDescriptor?.stringValue
}
if let scriptResult = runAppleScript("tell app \"Spotify\" to playpause") {
NSLog("\(scriptResult)")
} else {
print("the script execution failed")
}
If you prefer having a default value instead of nil when it fails, then no need to return an Optional:
func runAppleScript(script:String) -> String {
let errorInfo: AutoreleasingUnsafeMutablePointer<NSDictionary?> = nil
let startAtLoginScript = NSAppleScript(source: script)
let theDescriptor = startAtLoginScript?.executeAndReturnError(errorInfo)
return theDescriptor?.stringValue ?? "" // if nil, returns the default ""
}
let scriptResult = runAppleScript("tell app \"Spotify\" to playpause")
NSLog("\(scriptResult)")
As for using the new Swift 2 error handling system, none of the methods you're using inside runAppleScript are throwing errors, so it would only work if you used a custom error type and throw the errors yourself. Example:
enum MyAppleScriptError: ErrorType {
case ExecutingScriptFailed
case GettingStringValueFailed
}
func runAppleScript(script:String) throws -> String {
let errorInfo: AutoreleasingUnsafeMutablePointer<NSDictionary?> = nil
let startAtLoginScript = NSAppleScript(source: script)
guard let theDescriptor = startAtLoginScript?.executeAndReturnError(errorInfo) else {
throw MyAppleScriptError.ExecutingScriptFailed
}
guard let value = theDescriptor.stringValue else {
throw MyAppleScriptError.GettingStringValueFailed
}
return value
}
do {
let scriptResult = try runAppleScript("tell app \"Spotify\" to playpause")
NSLog("\(scriptResult)")
} catch {
print(error)
}
Swift 3
Same idea, but some implementation details are different.
func runAppleScript(_ script:String) -> String? {
let errorInfo: AutoreleasingUnsafeMutablePointer<NSDictionary?>? = nil
if let startAtLoginScript = NSAppleScript(source: script) {
let theDescriptor = startAtLoginScript.executeAndReturnError(errorInfo)
return theDescriptor.stringValue
}
return nil
}
if let scriptResult = runAppleScript("tell app \"Spotify\" to playpause") {
NSLog("\(scriptResult)")
} else {
print("no return value")
}
And with error handling:
enum MyAppleScriptError: ErrorProtocol {
case ExecutingScriptFailed
case GettingStringValueFailed
}
func runAppleScript(_ script:String) throws -> String {
let errorInfo: AutoreleasingUnsafeMutablePointer<NSDictionary?>? = nil
let startAtLoginScript = NSAppleScript(source: script)
guard let theDescriptor = startAtLoginScript?.executeAndReturnError(errorInfo) else {
throw MyAppleScriptError.ExecutingScriptFailed
}
guard let value = theDescriptor.stringValue else {
throw MyAppleScriptError.GettingStringValueFailed
}
return value
}
do {
let scriptResult = try runAppleScript("tell app \"Spotify\" to playpause")
NSLog("\(scriptResult)")
} catch {
print(error)
}
I have fixed my own code.
import Foundation
func runAppleScript(script:String) -> String
{
let theResult:String
let errorInfo = AutoreleasingUnsafeMutablePointer<NSDictionary?>()
let startAtLoginScript: NSAppleScript = NSAppleScript(source: script)!
let theDiscriptor:NSAppleEventDescriptor = startAtLoginScript.executeAndReturnError(errorInfo)
if let _ = theDiscriptor.stringValue
{
theResult = theDiscriptor.stringValue!
} else {
theResult = ""
}
return theResult
}
let scriptResult = runAppleScript("")
What I had to do was check if theDiscriptor.stringValue has a value before unwrapping it. The error that I was getting is because I was trying to check the value after I had unwrapped it. Simply removing the ! on the check fixed my problem.
Edit
When trying this in Swift 3, the code let errorInfo = AutoreleasingUnsafeMutablePointer<NSDictionary?>() no longer works. To fix this, I have updated the code.
func runAppleScript(script:String) -> String?
{
var theResult:String?
let startAtLoginScript: NSAppleScript = NSAppleScript(source: script)!
var errorInfo:NSDictionary? = nil
let theDiscriptor:NSAppleEventDescriptor = startAtLoginScript.executeAndReturnError(&errorInfo)
if let _ = theDiscriptor.stringValue {theResult = theDiscriptor.stringValue!}
return theResult
}
Bonus
By returning an optional string, it allows you to check if the code returned a value.
Example:
Old way
let output = runAppleScript("script")
if output != ""
{
//Script returned date
} else {
//Script did not return data
}
New way
if let output = runAppleScript("script")
{
//Script returned data
} else {
//Script did not return data
}
Im working with NSURLSession. I have an array with restaurants and i'm requesting the dishes for every restaurant in the array to the api. The dataTask works,i'm just having a real hard time trying to call a method only when the all dataTasks are finished.
self.findAllDishesOfRestaurants(self.restaurantsNearMe) { (result) -> Void in
if result.count != 0 {
self.updateDataSourceAndReloadTableView(result, term: "protein")
} else {
print("not ready yet")
}
}
the self.updateDataSourceAndREloadTableView never gets called, regardless of my completion block. Here is my findAllDishesOfRestaurants function
func findAllDishesOfRestaurants(restaurants:NSArray, completion:(result: NSArray) -> Void) {
let allDishesArray:NSMutableArray = NSMutableArray()
for restaurant in restaurants as! [Resturant] {
let currentRestaurant:Resturant? = restaurant
if currentRestaurant == nil {
print("restaurant is nil")
} else {
self.getDishesByRestaurantName(restaurant, completion: { (result) -> Void in
if let dishesArray:NSArray = result {
restaurant.dishes = dishesArray
print(restaurant.dishes?.count)
allDishesArray.addObjectsFromArray(dishesArray as [AnyObject])
self.allDishes.addObjectsFromArray(dishesArray as [AnyObject])
print(self.allDishes.count)
}
else {
print("not dishes found")
}
// completion(result:allDishesArray)
})
completion(result:allDishesArray)
}
}
}
And here is my the function where i perform the dataTasks.
func getDishesByRestaurantName(restaurant:Resturant, completion:(result:NSArray) ->Void) {
var restaurantNameFormatted = String()
if let name = restaurant.name {
for charachter in name.characters {
var newString = String()
var sameCharacter:Character!
if charachter == " " {
newString = "%20"
restaurantNameFormatted = restaurantNameFormatted + newString
} else {
sameCharacter = charachter
restaurantNameFormatted.append(sameCharacter)
}
// print(restaurantNameFormatted)
}
}
var urlString:String!
//not to myself, when using string with format, we need to igone all the % marks arent ours to replace with a string, otherwise they will be expecting to be replaced by a value
urlString = String(format:"https://api.nutritionix.com/v1_1/search/%#?results=0%%3A20&cal_min=0&cal_max=50000&fields=*&appId=XXXXXXXXXappKey=XXXXXXXXXXXXXXXXXXXXXXXXXXXX",restaurantNameFormatted)
let URL = NSURL(string:urlString)
let restaurantDishesArray = NSMutableArray()
let session = NSURLSession.sharedSession()
let dataTask = session.dataTaskWithURL(URL!) { (data:NSData?, response:NSURLResponse?, error:NSError?) -> Void in
do {
let anyObjectFromResponse:AnyObject = try NSJSONSerialization.JSONObjectWithData(data!, options: NSJSONReadingOptions.AllowFragments)
if let asNSDictionary = anyObjectFromResponse as? NSDictionary {
let hitsArray = asNSDictionary.valueForKey("hits") as? [AnyObject]
for newDictionary in hitsArray! as! [NSDictionary]{
let fieldsDictionary = newDictionary.valueForKey("fields") as? NSDictionary
let newDish = Dish.init(dictionary:fieldsDictionary!, restaurant: restaurant)
restaurantDishesArray.addObject(newDish)
}
}
completion(result:restaurantDishesArray)
} catch let error as NSError {
print("failed to connec to api")
print(error.localizedDescription)
}
}
dataTask.resume()
}
Like i said before, I need to wait until the fun findAllDishesOfRestaurants is done. I tried writing my completion blocks but I'm not sure I'm doing it right. Any help is greatly appreciated. Thank
The problem is that you are calling the completion method in findAllDishesOfRestaurants before al tasks are complete. In fact, you are calling it once for each restaurant in the list, which is probably not what you want.
My recommendation would be for you to look into NSOperationQueue for two reasons:
It will let you limit the number of concurrent requests to the server, so your server does not get flooded with requests.
It will let you easily control when all operations are complete.
However, if you are looking for a quick fix, what you need is to use GCD groups dispatch_group_create, dispatch_group_enter, dispatch_group_leave, and dispatch_group_notify as follows.
func findAllDishesOfRestaurants(restaurants:NSArray, completion:(result: NSArray) -> Void) {
let group = dispatch_group_create() // Create GCD group
let allDishesArray:NSMutableArray = NSMutableArray()
for restaurant in restaurants as! [Resturant] {
let currentRestaurant:Resturant? = restaurant
if currentRestaurant == nil {
print("restaurant is nil")
} else {
dispatch_group_enter(group) // Enter group for this restaurant
self.getDishesByRestaurantName(restaurant, completion: { (result) -> Void in
if let dishesArray:NSArray = result {
restaurant.dishes = dishesArray
print(restaurant.dishes?.count)
allDishesArray.addObjectsFromArray(dishesArray as [AnyObject])
// self.allDishes.addObjectsFromArray(dishesArray as [AnyObject]) <-- do not do this
// print(self.allDishes.count)
}
else {
print("not dishes found")
}
// completion(result:allDishesArray) <-- No need for this, remove
dispatch_group_leave(group) // Leave group, marking this restaurant as complete
})
// completion(result:allDishesArray) <-- Do not call here either
}
}
// Wait for all groups to complete
dispatch_group_notify(group, dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0)) {
completion(result:allDishesArray)
}
}