Followed the spotify swift tuturiol on youtube but currently getting the following error Argument labels '(contentsOfURL:, options:, error:)' do not match any available overloads for the following line:
if let imageData = NSData(contentsOfURL: imgURL, options: nil, error: &error) {
Context
func updateCoverArt() {
if player?.currentTrackMetadata == nil {
artworkImageView.image = UIImage()
return
}
let uri = player?.currentTrackMetadata[SPTAudioStreamingMetadataTrackURI] as! String
SPTAlbum.albumWithURI(NSURL(string: uri), session: session) { (error:NSError!, albumObj:AnyObject!) -> Void in
let album = albumObj as! SPTAlbum
if let imgURL = album.largestCover.imageURL as NSURL! {
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), { () -> Void in
var error:NSError? = nil
var coverImage = UIImage()
if let imageData = NSData(contentsOfURL: imgURL, options: nil, error: &error) {
if error == nil {
coverImage = UIImage(data: imageData)!
}
}
dispatch_async(dispatch_get_main_queue(), { () -> Void in
self.artworkImageView.image = coverImage
})
})
}
}
}
Related
** Update**
My point is im trying to match my profilePicLink with image I upload from my library.
Also selectedUsers is Users Type as following
var username : String = ""
var email : String = ""
var uid : String = ""
var profilePicLink : String = ""
init(username : String, email: String, uid : String, profilePicLink: String ) {
self.username = username
self.email = email
self.uid = uid
self.profilePicLink = profilePicLink
}
I am having problem when I am trying to upload photo. The action are
I pick the photo from my library
#IBAction func getPhotoButton(_ sender: Any) {
let image = UIImagePickerController()
image.delegate = self
image.sourceType = UIImagePickerController.SourceType.photoLibrary
self.present(image, animated: true, completion: nil)
}
It leads me to my photo library. After I pick my photo. I click on button "Update" with the action as following code
#IBAction func updatePhoto(_ sender: Any) {
uploadPhoto()
}
func uploadPhoto(){
selectedUser?.uploadProfileImage(imageView.image!){
url in print (URL.self)
}
}
I got the error as ** Fatal error: Unexpectedly found nil while unwrapping an Optional value: ** in the func uploadPhoto as the picture
Fatal Error
And here is the code of func in my other class (Users) for upload and get Profile Image
func getProfileImage() -> UIImage {
if let url = NSURL(string: profilePicLink){
if let data = NSData(contentsOf: url as URL) {
return UIImage(data: data as Data)!
}
}
return UIImage()
}
func uploadProfileImage(_ image:UIImage, completion: #escaping ((_ url:URL?)->())) {
guard let uid = Auth.auth().currentUser?.uid else { return }
let storageRef = Storage.storage().reference().child("user/\(uid)")
guard let imageData = image.jpegData(compressionQuality: 0.75) else { return }
let metaData = StorageMetadata()
metaData.contentType = "image/jpg"
storageRef.putData(imageData, metadata: metaData) { metaData, error in
if error == nil, metaData != nil {
storageRef.downloadURL { url, error in
completion(url)
// success!
}
} else {
// failed
completion(nil)
}
}
}
Updated : I modifed my function uploadProfileImage as following. My point is I wanna assign profilePicLink variables to the downloadurl. And then I update value of profilePicLink
func uploadProfileImage(_ image:UIImage, completion: #escaping ((_ url:URL?)->())) {
let storageRef = Storage.storage().reference().child("profileImages").child("\(NSUUID().uuidString).jpg")
guard let imageData = image.jpegData(compressionQuality: 0.75) else { return }
let metaData = StorageMetadata()
metaData.contentType = "image/jpg"
storageRef.putData(imageData, metadata:metaData) { (metaData, error) in
if error != nil, metaData != nil {
storageRef.downloadURL (completion: {(url, error) in
if error != nil {
if let downloadurl = url?.absoluteString {
if (self.profilePicLink == "") {
self.profilePicLink = downloadurl
Database.database().reference().child("users").child(self.uid).updateChildValues(["profilePicLink":downloadurl])
}
}
} else {
completion(nil)
}
}
)
}
}
}
Please be advised on this.
This question already has answers here:
Run code only after asynchronous function finishes executing
(2 answers)
Closed 5 years ago.
Im trying to wait for the function to process in order to show my image. I have try many things but none of this worked. I know this is an async function and basically i have to wait in order to get the right values but I dont know how to fix this function right here. I hope you can help me out. Thank you!
func createListProductsGood(Finished() -> void) {
refProducts.child("Products").queryOrderedByKey().observe(.childAdded, with: { snapshot in
let prod = snapshot.value as! NSDictionary
let active = snapshot.key
let rejected = prod["NotInterested"] as! String
let photoURL = prod["photoURL"] as! String
var findit = false
// print(rejected)
if (rejected != self.userUID){
//print(active)
if rejected.contains(","){
var pointsArr = rejected.components(separatedBy: ",")
for x in pointsArr{
if x.trimmingCharacters(in: NSCharacterSet.whitespaces) == self.userUID {
// print("dont show")
findit = true
return
}
}
if (findit == false){
if let url = NSURL(string: photoURL) {
if let data = NSData(contentsOf: url as URL) {
self.ProductId = active
self.productPhoto.image = UIImage(data: data as Data)
}}
}
}else{
print(active)
if let url = NSURL(string: photoURL) {
if let data = NSData(contentsOf: url as URL) {
self.ProductId = active
self.productPhoto.image = UIImage(data: data as Data)
}}
}
}
})
finished()
}
Edited:
This is how my viewDidLoad looks like:
override func viewDidLoad() {
super.viewDidLoad()
setAcceptedOrRejected()
createListProductsGood{_ in
}
}
func createListProductsGood(finished: #escaping (_ imageData: Data) -> Void) {
refProducts.child("Products").queryOrderedByKey().observe(.childAdded, with: { snapshot in
let prod = snapshot.value as! NSDictionary
let active = snapshot.key
let rejected = prod["NotInterested"] as! String
let photoURL = prod["photoURL"] as! String
var findit = false
// print(rejected)
if (rejected != self.userUID){
//print(active)
if rejected.contains(","){
var pointsArr = rejected.components(separatedBy: ",")
for x in pointsArr{
if x.trimmingCharacters(in: NSCharacterSet.whitespaces) == self.userUID {
// print("dont show")
findit = true
return
}
}
if (findit == false){
if let url = NSURL(string: photoURL) {
if let data = NSData(contentsOf: url as URL) {
self.ProductId = active
DispatchQueue.main.async {
self.productPhoto.image = UIImage(data: data as Data)
}
}}
}
}else{
print(active)
if let url = NSURL(string: photoURL) {
if let data = NSData(contentsOf: url as URL) {
self.ProductId = active
DispatchQueue.main.async {
self.productPhoto.image = UIImage(data: data as Data)
}
}}
}
}
})
}
This is my second method:
func setAcceptedOrRejected() {
refProducts.child("Products").queryOrderedByKey().observe(.childAdded, with: { snapshot in
let prod = snapshot.value as! NSDictionary
if self.ProductId == snapshot.key{
self.texto = prod["NotInterested"] as! String
self.refProducts.child("Products").child(self.ProductId).updateChildValues(["NotInterested": self.texto + ", " + self.userUID])
} })
}
You should change:
func createListProductsGood(Finished() -> void) {
to:
func createListProductsGood(finished: #escaping (_ something: SomeType) -> Void) {
or to be more specific:
func createListProductsGood(finished: #escaping (_ imageData: Data) -> Void) {
then wherever in your function you get the image, you call
finished(imageData)
so you can pass the imageData through a closure to where its needed.
then you call this function like this:
createListProductsGood{ imageData in
...
let image = UIImage(data: imageData)
// update UI from main Thread:
DispatchQueue.main.async {
self.productPhoto.image = image
}
}
Also:
it's not convention to use Finished(), you should use finished()
using void is wrong. You must use Void or ()
If you're having problems with closures and completionHandlers, I recommend you first try getting your hands dirty with a simple UIAlertController. See here. Try creating an action with a closure, e.g. see here
EDIT :
Thanks to Leo's comments:
func createListProductsGood(finished: #escaping(_ imageData: Data?, MyError?) -> Void) {
let value: Data?
let error = MyError.someError("The error message")
refProducts.child("Products").queryOrderedByKey().observe(.childAdded, with: { snapshot in
let prod = snapshot.value as! NSDictionary
let active = snapshot.key
let rejected = prod["NotInterested"] as! String
let photoURL = prod["photoURL"] as! String
var findit = false
// print(rejected)
if (rejected != self.userUID){
//print(active)
if rejected.contains(","){
var pointsArr = rejected.components(separatedBy: ",")
for x in pointsArr{
if x.trimmingCharacters(in: NSCharacterSet.whitespaces) == self.userUID {
// print("dont show")
findit = true
return
}
}
if (findit == false){
if let url = NSURL(string: photoURL) {
if let data = NSData(contentsOf: url as URL) {
self.ProductId = active // REMOVE
self.productPhoto.image = UIImage(data: data as Data) // REMOVE
finished(data, nil) //ADD
}else{
finished(nil,error) //ADD
}
}
}
}else{
print(active)
if let url = NSURL(string: photoURL) {
if let data = NSData(contentsOf: url as URL) {
self.ProductId = active // REMOVE
self.productPhoto.image = UIImage(data: data as Data) // REMOVE
finished(data,nil) //ADD
}else{
finished(nil,error) //ADD
}
}
}
}
})
}
And then you call it like:
createListProductsGood { imageData, error in guard let value = imageData, error == nil else { // present an alert and pass the error message return }
...
let image = UIImage(data: imageData)
// update UI from main Thread:
DispatchQueue.main.async {
self.ProductId = active
self.productPhoto.image = image } }
Basically this way the createListProductsGood takes in 2 closures, one for if the image is present, another for if an error was returned.
Tell me how to get rid of the error in my method? has many options tried and still the image does not display on ViewContoller.
func detailObject() {
let query = PFQuery(className: "soccer")
query.findObjectsInBackground { (objects:[PFObject]?, error:Error?) in
if error == nil {
for objects in objects! {
let detailPrognozS = objects["detailPrognozS"] as! String
let detailTitleS = objects["detailTitleS"] as! String
let detailTextS = objects["detailTextS"] as! String
let imageDetail = objects["detailImageS"] as? PFFile
DispatchQueue.main.async { [unowned self] in
self.prognozDetail.text = detailPrognozS
self.textView.text = detailTextS
self.titleDetail.text = detailTitleS
}
imageDetail?.getDataInBackground(block: { (data:Data?, error:Error?) in
if error == nil {
if let imageData = data {
DispatchQueue.main.async { [unowned self] in
self.imageDetail.image = UIImage(data: imageData)
}
}
}
})
}
}
}
The code displays this error:
Fatal error: unexpectedly found nil while unwrapping an Optional value Error be in this line"self.imageDetail.image = UIImage(data: imageData)" and the app crashes...please tell me.I beg you...
I am new to swift so please treat me as beginner.
I am following tutorial, this is pretty old tutorial and it has used GoogleMap framework whereas I am doing it with pod. In func geocodeAddress in MapTasks.swift file I am getting error called
Extra argument 'error' in call
func geocodeAddress(address: String!, withCompletionHandler completionHandler: ((status: String, success: Bool) -> Void)) {
if let lookupAddress = address {
var geocodeURLString = baseURLGeocode + "address=" + lookupAddress
geocodeURLString = geocodeURLString.stringByAddingPercentEscapesUsingEncoding(NSUTF8StringEncoding)!
let geocodeURL = NSURL(string: geocodeURLString)
dispatch_async(dispatch_get_main_queue(), { () -> Void in
let geocodingResultsData = NSData(contentsOfURL: geocodeURL!)
let request = NSMutableURLRequest(URL: geocodingResultsData)
let task = NSURLSession.sharedSession().dataTaskWithRequest(request) {
(let data, let response, let error) in
if let _ = response as? NSHTTPURLResponse {
do {
let json = try NSJSONSerialization.JSONObjectWithData(data!, options: .MutableContainers) as? NSDictionary
if error != nil {
print("error=\(error!)")
return
}
if let parseJSON = json {
}
} catch {
print(error)
}
}
}
task.resume()
else {
// Get the response status.
let status = dictionary["status"] as! String
if status == "OK" {
let allResults = dictionary["results"] as! Array<Dictionary<NSObject, AnyObject>>
self.lookupAddressResults = allResults[0]
// Keep the most important values.
self.fetchedFormattedAddress = self.lookupAddressResults["formatted_address"] as! String
let geometry = self.lookupAddressResults["geometry"] as! Dictionary<NSObject, AnyObject>
self.fetchedAddressLongitude = ((geometry["location"] as! Dictionary<NSObject, AnyObject>)["lng"] as! NSNumber).doubleValue
self.fetchedAddressLatitude = ((geometry["location"] as! Dictionary<NSObject, AnyObject>)["lat"] as! NSNumber).doubleValue
completionHandler(status: status, success: true)
}
else {
completionHandler(status: status, success: false)
}
}
})
}
else {
completionHandler(status: "No valid address.", success: false)
}
}
So far I know is I am getting this error because of the diffrent version of swift. Tutorial I am following is written in old version of swift and I am doing it in new
In Swift 2.0, you cannot add 'error' argument in NSJSONSerialization method, you need to use try-catch statement as follows:
func geocodeAddress(address: String!, withCompletionHandler completionHandler: ((status: String, success: Bool) -> Void)) {
if let lookupAddress = address {
var geocodeURLString = baseURLGeocode + "address=" + lookupAddress
geocodeURLString = geocodeURLString.stringByAddingPercentEscapesUsingEncoding(NSUTF8StringEncoding)!
let geocodeURL = NSURL(string: geocodeURLString)
dispatch_async(dispatch_get_main_queue(), { () -> Void in
let geocodingResultsData = NSData(contentsOfURL: geocodeURL!)
let request = NSMutableURLRequest(URL: geocodeURL!)
let task = NSURLSession.sharedSession().dataTaskWithRequest(request) {
(let data, let response, let error) in
if let _ = response as? NSHTTPURLResponse {
do {
let dictionary = try NSJSONSerialization.JSONObjectWithData(data!, options: .MutableContainers) as? NSDictionary
if error != nil {
print("error=\(error!)")
return
}
if let parseJSON = dictionary {
let status = dictionary["status"] as! String
if status == "OK" {
let allResults = dictionary["results"] as! Array<Dictionary<NSObject, AnyObject>>
self.lookupAddressResults = allResults[0]
// Keep the most important values.
self.fetchedFormattedAddress = self.lookupAddressResults["formatted_address"] as! String
let geometry = self.lookupAddressResults["geometry"] as! Dictionary<NSObject, AnyObject>
self.fetchedAddressLongitude = ((geometry["location"] as! Dictionary<NSObject, AnyObject>)["lng"] as! NSNumber).doubleValue
self.fetchedAddressLatitude = ((geometry["location"] as! Dictionary<NSObject, AnyObject>)["lat"] as! NSNumber).doubleValue
completionHandler(status: status, success: true)
}
else {
completionHandler(status: status, success: false)
}
}
} catch {
print(error)
}
}
}
task.resume()
})
}
}
In my code it receives the images from parse, and show it in a imageView. Here is the code:
http://pastebin.com/kDjAgPRT
If needed, here is my code for upload:
func uploadPost(){
var imageText = self.imageText.text
if (imageView.image == nil){
println("No image uploaded")
}
else{
var posts = PFObject(className: "Posts")
posts["imageText"] = imageText
posts["uploader"] = PFUser.currentUser()
posts.saveInBackgroundWithBlock({ (success: Bool, error: NSError?) -> Void in
if error == nil{
//**Success saving, now save image.**//
// Create an image data
var imageData = UIImagePNGRepresentation(self.imageView.image)
// Create a parse file to store in cloud
var parseImageFile = PFFile(name: "upload_image2.png", data: imageData)
//var parseImageFile = PFFile(data: imageData)
posts["imageFile"] = parseImageFile
posts.saveInBackgroundWithBlock({ (success: Bool, error: NSError?) -> Void in
if error == nil{
// Take user home
println(success)
println("Data uploaded")
}
else{
println(error)
}
})
}
else{
println(error)
}
})
}
}
As you can see, here is my Parse inside "Posts":
How can i also get "imageText", "uploader" and "createdAt" for the images? Like instagram has.
Try this:
struct Details {
var username:String!
var text:String!
var CreatedAt:NSDate!
var image:UIImage!
init(username:String,text:String,CreatedAt:NSDate,image:UIImage){
self.username = username
self.text = text
self.CreatedAt = CreatedAt
self.image = image
}
}
func QueryImagesFromParse(){
var arrayOfDetails = [Details]()
var query = PFQuery(className: "Posts")
query.findObjectsInBackgroundWithBlock { (objects:[AnyObject]?, error:NSError?) -> Void in
if error == nil
{
if let newObjects = objects as? [PFObject] {
for oneobject in newObjects {
var text = oneobject["imageText"] as! String
var username = oneobject["uploader"] as! String
var time = oneobject.createdAt
var userImageFile = oneobject["imageFile"] as! PFFile
userImageFile.getDataInBackgroundWithBlock({ (imageData:NSData?, error:NSError?) -> Void in
if error == nil {
let newImage = UIImage(data: imageData!)
var OneBigObject = Details(username: username, text: text, CreatedAt: time!, image: newImage!)
arrayOfDetails.append(OneBigObject)
// then reloadData
}
})
}
}
}
}
}
SO NOW with the arrayOfDetails you could populate your cells...