I've been following Udacity's Intro to iOS App Development with Swift tutorial, but got this error.
Value of type 'PlaySoundsViewController' has no member 'recordedAudio'
Line 84 has the error.
playSoundsVC.recordedAudio = recordedAudioURL
Here is the entire code:
import UIKit
import AVFoundation
class RecordSoundsViewController: UIViewController , AVAudioRecorderDelegate {
#IBOutlet weak var recordingInProgress: UILabel!
#IBOutlet weak var stopButton: UIButton!
#IBOutlet weak var recordButton: UIButton!
var audioRecorder:AVAudioRecorder!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
override func viewWillAppear(animated: Bool) {
//TODO: Hide stop button
stopButton.hidden = true
//TODO: Enable recordButton
recordButton.enabled = true
}
#IBAction func recordAudio(sender: AnyObject) {
//TODO: Show text "recording in progress"
recordingInProgress.hidden = false
//TODO: Show stopButton
stopButton.hidden = false
//TODO: Record the user's voice
print("in recordAudio")
//TODO: Disable recording button
recordButton.enabled = false
let dirPath = NSSearchPathForDirectoriesInDomains(.DocumentDirectory,.UserDomainMask, true)[0] as String
let recordingName = "recordedVoice.wav"
let pathArray = [dirPath, recordingName]
let filePath = NSURL.fileURLWithPathComponents(pathArray)
print(filePath)
let session = AVAudioSession.sharedInstance()
try! session.setCategory(AVAudioSessionCategoryPlayAndRecord)
try! audioRecorder = AVAudioRecorder(URL: filePath!, settings: [:])
audioRecorder.meteringEnabled = true
audioRecorder.prepareToRecord()
audioRecorder.record()
}
#IBAction func stopRecording(sender: AnyObject) {
//TODO: hide recordingInProgress label
recordingInProgress.hidden = true
recordButton.enabled = true
let audioSession = AVAudioSession.sharedInstance()
try! audioSession.setActive(false)
}
func audioRecorderDidFinishRecording(recorder: AVAudioRecorder, successfully flag: Bool) {
print("AVAudioRecorder finished saving recording")
if (flag) {
self.performSegueWithIdentifier("stopRecording", sender: audioRecorder.url)
} else {
print("Saving of recording failed")
}
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if (segue.identifier == "stopRecording") {
let playSoundsVC = segue.destinationViewController as!
PlaySoundsViewController
let recordedAudioURL = sender as! NSURL
playSoundsVC.recordedAudio = recordedAudioURL
}
}
}
class PlaySoundsViewController: UIViewController {
var recordedURL: URL?
override func viewDidLoad() {
super.viewDidLoad()
}
}
Don't forget to add an identifier for segue:
add var recordedAudioURL:URL! to your PlaySoundsViewController file
it is a variable that holds the url in the next class which is been send from the current class.
happy coding :)
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if (segue.identifier == "stopRecording") {
let playSoundsVC = segue.destinationViewController as! PlaySoundViewController
let recordedAudioURL = sender as! NSURL
playSoundsVC.recordedAudioURL = recordedAudioURL
}
}
Related
As a beginner, I am unable to figure out why I get this error. The code I am using comes directly from the Udacity course I am taking. Here is the code:
import UIKit
import AVFoundation
class RecordSoundsViewController: UIViewController, <AVAudioRecorderDelegate> {
var audioRecorder: AVAudioRecorder!
#IBOutlet weak var recordingLabel: UILabel!
#IBOutlet weak var recordbutton: UIButton!
#IBOutlet weak var stopRecordingButton: UIButton!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
stopRecordingButton.isEnabled = false
}
#IBAction func recordAudio(_ sender: Any) {
recordingLabel.text = "Recording in progress..."
recordbutton.isEnabled = false
stopRecordingButton.isEnabled = true
let dirPath = NSSearchPathForDirectoriesInDomains(.documentDirectory,.userDomainMask, true)[0] as String
let recordingName = "recordedVoice.wav"
let pathArray = [dirPath, recordingName]
let filePath = URL(string: pathArray.joined(separator: "/"))
let session = AVAudioSession.sharedInstance()
try! session.setCategory(AVAudioSession.Category.playAndRecord, mode: AVAudioSession.Mode.default, options: AVAudioSession.CategoryOptions.defaultToSpeaker)
try! audioRecorder = AVAudioRecorder(url: filePath!, settings: [:])
audioRecorder.delegate = self
audioRecorder.isMeteringEnabled = true
audioRecorder.prepareToRecord()
audioRecorder.record() }
#IBAction func stopRecording(_ sender: Any) {
recordbutton.isEnabled = true
stopRecordingButton.isEnabled = false
recordingLabel.text = "Tap to Record"
audioRecorder.stop()
let audioSession = AVAudioSession.sharedInstance()
try! audioSession.setActive(false)
}
func audioRecorderDidFinishRecording(_ recorder: AVAudioRecorder, successfully flag: BOOL) {
print("finished recording")
}
}
I appreciate any help you cold give me. XCode 11.5, Swift 5.2
Thanks,
Mike
You should get a bunch of more errors.
Anyway this is not Objective-C. Adopting protocols is not in angle brackets
class RecordSoundsViewController: UIViewController, AVAudioRecorderDelegate {
and the boolean type in Swift is Bool (not BOOL)
func audioRecorderDidFinishRecording(_ recorder: AVAudioRecorder, successfully flag: Bool) {
And don't try!. Catch errors.
I have a model - Movies.
and two controllers - first for search movie by title, second - for display result with poster, title and year.
Now i need to create some history search on my third controller
(searchHistoryController - TableView) where displayed all movies, and when i tapped on cell with movie's title show movie info.
How I can build it?
I tried create array in my model. And write resutl in it, but each time when i use search it rewrite array, not add new element.
Maybe use realm
Need some help:)
Movie.swift
import Foundation
import UIKit
import Alamofire
import AlamofireImage
protocol MovieDelegate {
func updateMovieInfo()
}
class Movie {
private let omdbUrl = "http://www.omdbapi.com/?"
var title: String?
var filmYear: String?
var poster: String?
var delegete: MovieDelegate!
var historyMovie = [Movie]()
func getMovieInfo(title: String, completion: #escaping ()->()){
let params = ["t": title]
Alamofire.request(omdbUrl, method: .get, parameters: params).validate(statusCode: 200..<300).validate(contentType: ["application/json"]).responseJSON { (response) in
switch response.result {
case .success(let JSON):
let response = JSON as! NSDictionary
let status = response["Response"] as! String
if status == "True" {
self.title = (response["Title"] as! String)
self.filmYear = (response["Year"] as! String)
self.poster = (response["Year"] as! String)
// self.delegete.updateMovieInfo()
completion()
} else {
self.title = (response["Error"] as! String)
completion()
}
case .failure(let error):
print (error)
}
}
}
}
SearchVC
import UIKit
class SearchViewController: UIViewController {
var movie = Movie()
#IBOutlet weak var activityIndicator: UIActivityIndicatorView!
#IBOutlet weak var searchTextField: UITextField!
#IBOutlet weak var searchButton: UIButton!
#IBAction func searchButtonTapped(_ sender: UIButton) {
activityIndicator.startAnimating()
DispatchQueue.main.async {
self.movie.getMovieInfo(title: self.searchTextField.text!, completion: {
self.activityIndicator.stopAnimating()
self.performSegue(withIdentifier: "movieInfo", sender: self)
})
}
}
override func viewDidLoad() {
super.viewDidLoad()
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
let secondVC = segue.destination as! DetailInfoViewController
secondVC.movieTitle = movie.title!
}
}
DetailVC
class DetailInfoViewController: UIViewController, MovieDelegate {
#IBAction func showHistory(_ sender: UIButton) {
performSegue(withIdentifier: "showHistory", sender: self)
}
#IBOutlet weak var posterImageView: UIImageView!
#IBOutlet weak var filmNameLabel: UILabel!
#IBOutlet weak var filmYearLabel: UILabel!
var movie = Movie()
var movieTitle = ""
override func viewDidLoad() {
super.viewDidLoad()
self.movie.getMovieInfo(title: movieTitle ) {
self.updateMovieInfo()
}
self.movie.delegete = self
}
func updateMovieInfo() {
getPoster(link: movie.poster)
filmNameLabel.text = movie.title
filmYearLabel.text = movie.filmYear
}
func getPoster(link: String?) {
if link != nil {
guard let url = URL(string: link!) else { return }
DispatchQueue.global().async {
if let data = try? Data(contentsOf: url) {
DispatchQueue.main.async {
self.posterImageView.image = UIImage(data: data)
}
}
} } else {
self.posterImageView.image = #imageLiteral(resourceName: "Image")
}
}
}
First of all, movieHistory should not be part of your Movie class, but part of your SearchViewController class.
Second of all, unless you want to persist your data, you don't need Realm for this.
Just save the movies in SearchViewController into an array once the search button has been tapped and send it to your other view controller in the segue. Like so
#IBAction func searchButtonTapped(_ sender: UIButton) {
activityIndicator.startAnimating()
DispatchQueue.main.async {
self.movie.getMovieInfo(title: self.searchTextField.text!, completion: {
self.activityIndicator.stopAnimating()
movieHistory.append(movie)
self.performSegue(withIdentifier: "movieInfo", sender: movieHistory)
})
}
}
Also, modify prepare(for segue:...) like this:
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
let secondVC = segue.destination as! DetailInfoViewController
secondVC.movieTitle = movie.title!
secondVC.movieHistory = movieHistory
}
In detailVC override prepare(for segue:...) as well and send movieHistory to searchHistoryController the same way it is done in the previous VC.
I am experimenting with my code to try to add some new features in. After adding in the new UserDefaults I got an error that read "Segmentation fault: 11" and it flagged my secondviewcontoller, the code is down below. Please help
import Foundation
import UIKit
import SpriteKit
import AVFoundation
protocol DestinationViewDelegate {
}
var delegate : GameViewDelegate! = nil
var bombSoundEffect: AVAudioPlayer!
var ghost = SKSpriteNode()
class SecondViewController: UIViewController, GameViewDelegate {
var sw = false
let defaults = UserDefaults.standard
#IBAction func one(_ sender: AnyObject) {
defaults.set(1, forKey: "Sphere")
print("Ghost one was selected")
}
#IBAction func two(_ sender: AnyObject) {
defaults.set(2, forKey: "Sphere")
print("Ghost two was selected")
}
#IBAction func three(_ sender: AnyObject) {
defaults.set(3, forKey: "Sphere")
print("Ghost three was selected")
}
#IBAction func four(_ sender: AnyObject) {
defaults.set(4, forKey: "Sphere")
print("Ghost four was selected")
}
#IBAction func five(_ sender: AnyObject) {
defaults.set(5, forKey: "Sphere")
print("Ghost five was selected")
}
#IBAction func six(_ sender: AnyObject) {
defaults.set(6, forKey: "Sphere")
print("Ghost six was selected")
}
#IBOutlet var mySwitch: UISwitch!
#IBAction func switchpressed(_ sender: AnyObject) {
let defaults = UserDefaults.standard
if mySwitch.isOn{
defaults.set(true, forKey: "SwitchState")
if bombSoundEffect != nil {
bombSoundEffect.stop()
bombSoundEffect = nil
}
}
else{
defaults.set(false, forKey: "SwitchState")
let path = Bundle.main.path(forResource: "Untitled2.wav", ofType:nil)!
let url = URL(fileURLWithPath: path)
do {
let sound = try AVAudioPlayer(contentsOf: url)
bombSoundEffect = sound
sound.numberOfLoops = -1
sound.play()
} catch {
// couldn't load file :(
}
}
}
override func viewDidLoad() {
super.viewDidLoad()
// Keep this part the same
let defaults = UserDefaults.standard
if (defaults.object(forKey: "SwitchState") != nil) {
mySwitch.isOn = defaults.bool(forKey: "SwitchState")
}
// Check to see if the switch is off, if so, stop the music
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Release any cached data, images, etc that aren't in use.
}
}
The problem is this bit of code:
#IBAction func one(_ sender: AnyObject) {
defaults.set(1, forKey: "Sphere")
print("Ghost one was selected")
}
You've found a compiler bug. Try to work around it like this:
#IBAction func one(_ sender: AnyObject) {
defaults.set(1 as Any, forKey: "Sphere")
print("Ghost one was selected")
}
You will need to do that for all your defaults.set calls. I think that will allow you to compile.
I'm having quite some troubles implementing Facebook login in my iOS , everything works fine if the user is not already logged in, the application fetches correctly the data from Facebook and pass them to the next ViewController , instead if is already logged in it should automatically segue to a recap page that shows user's info but i can't make it happen, currently I'm using this method :
override func viewDidLoad() {
super.viewDidLoad()
LoginButton.delegate = self
if (FBSDKAccessToken.currentAccessToken() != nil) {
self.performSegueWithIdentifier("Login", sender: self)
}
}
but in the console i get :
Facebook_Login.LoginViewController: 0x7fc04a519ca0 on Facebook_Login.ViewController: 0x7fc04a41c1e0 whose view is not in the window hierarchy!
i've also tried using the viewdidAppear method, but it segues to the recap page without updating the variables so i get an empty page
here' the complete code:
View Controller 1
import UIKit
import FBSDKLoginKit
class ViewController: UIViewController,FBSDKLoginButtonDelegate {
var nome1:String = ""
var cognome1:String = ""
var email1:String = ""
var compleanno:String = ""
var città:String = ""
var genere:String = ""
var immagine_url:String = ""
#IBOutlet weak var LoginButton: FBSDKLoginButton!
#IBAction func LoginAction(sender: AnyObject) {
LoginButton.delegate = self
LoginButton.readPermissions = ["email"]
}
func FetchInfo(){
print("scarico le informazioni...")
let parametri = ["fields":"email, first_name, last_name, birthday, hometown, gender, picture.type(large)"]
FBSDKGraphRequest(graphPath: "me", parameters: parametri).startWithCompletionHandler{(connection,result,error) -> Void in
if (error != nil){
print ("errore")
return
}
else {
if let email = result["email"] as? String {
print(email)
self.email1 = email
}
if let nome = result["first_name"] as? String {
print(nome)
self.nome1 = nome
}
if let cognome = result["last_name"] as? String {
print(cognome)
self.cognome1 = cognome
}
if let compleanno = result["birthday"] as? String{
print(compleanno)
}
if let città = result["hometown"] as? String{
print(città)
}
if var genere = result["gender"] as? String{
if (genere == "male"){
genere = "maschio"
}
else {
genere = "femmina"
}
print(genere)
}
}
if let picture = result["picture"] as? NSDictionary, data = picture["data"] as? NSDictionary, url = data["url"] as? String{
self.immagine_url = url
print(self.immagine_url)
}
}
return
}
func loginButton(loginButton: FBSDKLoginButton!, didCompleteWithResult result: FBSDKLoginManagerLoginResult!, error: NSError!){
if (result.isCancelled == true){
print("cancellato")
}
else {
print("login effettuato")
FetchInfo()
self.performSegueWithIdentifier("Login", sender: self)
}
}
func loginButtonDidLogOut(loginButton: FBSDKLoginButton!){
}
func loginButtonWillLogin(loginButton: FBSDKLoginButton!) -> Bool{
return true
}
#IBAction func returned(segue:UIStoryboardSegue){
}
override func viewDidLoad() {
super.viewDidLoad()
LoginButton.delegate = self
}
override func viewDidAppear(animated: Bool) {
if (FBSDKAccessToken.currentAccessToken() != nil) {
FetchInfo()
if(nome1 == ""){
}
else {
self.performSegueWithIdentifier("Login", sender: self)
}
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
let destinazione:LoginViewController = segue.destinationViewController
as! LoginViewController
destinazione.temp_nome = nome1
destinazione.temp_cognome = cognome1
destinazione.temp_email = email1
destinazione.img_profile_url = immagine_url
}
}
ViewController 2:
import UIKit
import FBSDKLoginKit
class LoginViewController: UIViewController, FBSDKLoginButtonDelegate {
var temp_nome = ""
var temp_cognome = ""
var temp_email = ""
var img_profile_url:String = ""
#IBOutlet weak var Nome_Utente: UILabel!
#IBOutlet weak var email: UILabel!
#IBOutlet weak var Immagine_Utente: UIImageView!
#IBOutlet weak var Login_button: FBSDKLoginButton!
#IBAction func Login_button_Action(sender: AnyObject) {
Login_button.delegate = self
}
func loginButton(loginButton: FBSDKLoginButton!, didCompleteWithResult result: FBSDKLoginManagerLoginResult!, error: NSError!){
}
func loginButtonDidLogOut(loginButton: FBSDKLoginButton!){
self.performSegueWithIdentifier("Back", sender: self)
}
override func viewDidLoad() {
super.viewDidLoad()
Nome_Utente.text = "\(temp_nome)" + " " + "\(temp_cognome)"
email.text = "\(temp_email)"
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
First of all, avoid to reset your LoginButton.delegate in the LoginAction() function.
If the user is already logged in, to avoid an useless call to the Facebook Graph API (if you do not necessarily need to update his informations), you can store your user informations in CoreData or in a NSUserDefault.
If you never used it you can use the CDHelper lib (CoreDataHelper) which will allow you to use it without difficulties.
Hope I was helpful, if not, do not hesitate to give us a feedback.
Btw, in your viewDidAppear(animated: Bool) function, you have to call super.viewDidAppear(animated) !
I am trying to record Audio, and pass the recorded audio, to the next view controller. Here is my code for recording Audio
class RecordSoundsViewController: UIViewController, AVAudioRecorderDelegate {
#IBOutlet weak var recording: UILabel!
#IBOutlet weak var recordButton: UIButton!
#IBOutlet weak var stopButton: UIButton!
var audioRecorder:AVAudioRecorder!
var recordedAudio : RecordedAudio!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
override func viewWillAppear(animated: Bool) {
// enables record button
// hides the stop button
recordButton.enabled = true
stopButton.hidden = true
}
#IBAction func recordAudio(sender: UIButton) {
//Shows recording label
recording.hidden = false
//diabling record button
recordButton.enabled = false
stopButton.hidden = false
//Filepath Creation
let dirPath = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] as! String
let currentDateTime = NSDate()
let formatter = NSDateFormatter()
formatter.dateFormat = "ddMMyyyy-HHmmss"
let recordingName = formatter.stringFromDate(currentDateTime)+".wav"
let pathArray = [dirPath, recordingName]
let filePath = NSURL.fileURLWithPathComponents(pathArray)
println(filePath)
// Recording Session
var session = AVAudioSession.sharedInstance()
session.setCategory(AVAudioSessionCategoryPlayAndRecord, error: nil)
audioRecorder = AVAudioRecorder(URL: filePath, settings: nil, error: nil)
audioRecorder.delegate = self
audioRecorder.meteringEnabled = true
audioRecorder.prepareToRecord()
audioRecorder.record()
}
func audioRecorderDidFinishRecording(recorder: AVAudioRecorder!, successfully flag: Bool) {
// ToDo create recorded audio file
if(flag)
{ recordedAudio = RecordedAudio()
recordedAudio.filepathURL = recorder.url
recordedAudio.title = recorder.url.lastPathComponent
// ToDo Perform segue
self.performSegueWithIdentifier("stopRecording", sender: recordedAudio)
}
else {
println("Recording was unsuccessfull")
stopButton.hidden = true
recordButton.enabled = true
}
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if(segue == "stopRecording") {
let PlaySoundsVC:PlaySoundsViewController = segue.destinationViewController as! PlaySoundsViewController
let data = sender as! RecordedAudio
PlaySoundsVC.receivedAudio = data
}
}
#IBAction func stopAudio(sender: UIButton) {
// Hides recording
recording.hidden = true
audioRecorder.stop()
var audioSession = AVAudioSession.sharedInstance()
audioSession.setActive(false, error: nil)
}
}
My Model class is ,
import Foundation
class RecordedAudio : NSObject{
var filepathURL :NSURL!
var title : String!
}
Here is how My second viewcontroller catch the data and uses it,
class PlaySoundsViewController: UIViewController {
var audioPlayer: AVAudioPlayer!
var receivedAudio: RecordedAudio!
func rateplay (rtt : Float32) {
audioPlayer.stop()
audioPlayer.rate = rtt
audioPlayer.currentTime = 0.0
audioPlayer.play()
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
// if var filePath = NSBundle.mainBundle().pathForResource("movie_quote", ofType: "mp3")
// {
// // if path is there for mp3
// let filepathurl = NSURL.fileURLWithPath(filePath)
//
// // println(receivedAudio.title)
//
// }
// else {
// println("Path is empty")
//
// }
audioPlayer = AVAudioPlayer(contentsOfURL: receivedAudio.filepathURL, error: nil)
audioPlayer.enableRate = true
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
#IBAction func playSlow(sender: UIButton) {
// play sloooowllyyyyy
audioPlayer.stop()
audioPlayer.rate = 0.5
audioPlayer.currentTime = 0.0
audioPlayer.play()
}
#IBAction func playFast(sender: UIButton) {
rateplay(1.5)
}
#IBAction func stopAudio(sender: UIButton) {
audioPlayer.stop()
}
/*
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
// Get the new view controller using segue.destinationViewController.
// Pass the selected object to the new view controller.
}
*/
}
Untill I add the below code,
audioPlayer = AVAudioPlayer(contentsOfURL: receivedAudio.filepathURL, error: nil)
audioPlayer.enableRate = true
I was able to move to the second scene, which means, the audio is successfully recorded. But as soon as i access the data like "receivedAudio.filepathURL" I am getting the error,
fatal error: unexpectedly found nil while unwrapping an Optional value
In the prepareForSegue function of the RecordSoundsViewController you need to write segue.identifier == "stopRecording" as the condition.
Currently you have segue == "stopRecording".
Happy Coding!