can someone please assist me? I have some code (which I know runs properly in Xcode 6) that is having difficulty executing in Xcode 7 (due to the changes in error handling for Swift 2). I tried to convert the code using the latest Swift syntax in Xcode 7, but no recommendations were offered. Any suggestions?
//Setup audio session
var session = AVAudioSession.sharedInstance()
session.setCategory(AVAudioSessionCategoryPlayAndRecord,error: nil)
//Initialize and prepare the recorder
audioRecorder = AVAudioRecorder(URL: filePath, settings: nil, error:nil)
audioRecorder.meteringEnabled = true;
audioRecorder.prepareToRecord()
audioRecorder.record()
}
#IBAction func stopAudio(sender: UIButton) {
recordingInProgress.hidden = true
//TODO: Stop recording the user's voice
audioRecorder.stop()
var audioSession = AVAudioSession.sharedInstance();
audioSession.setActive(false, error:nil)
}
The Error messages are for the following code:
session.setCategory(AVAudioSessionCategoryPlayAndRecord,error: nil)
Extra argument 'error' in call
audioRecorder = AVAudioRecorder(URL: filePath, settings: nil, error:nil)
Cannot find an initializer for type 'AVAudioRecorder' that accepts an argument list of type '(URL: NSURL?, settings: nil, error: nil)'
audioSession.setActive(false, error:nil)
****Extra argument 'error' in call****
try this class ive tested this and it works in the latest version of swift and Xcode
import UIKit
import AVFoundation
class RecordViewController: UIViewController {
required init(coder aDecoder: NSCoder) {
var baseString : String = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.UserDomainMask, true)[0] as! String
var pathComponents = [baseString, NSUUID().UUIDString + ".m4a"]
self.audioURL = NSURL.fileURLWithPathComponents(pathComponents)!
var session = AVAudioSession.sharedInstance()
session.setCategory(AVAudioSessionCategoryPlayAndRecord, error: nil)
var recordSettings: [NSObject : AnyObject] = Dictionary()
recordSettings[AVFormatIDKey] = kAudioFormatMPEG4AAC
recordSettings[AVSampleRateKey] = 44100.0
recordSettings[AVNumberOfChannelsKey] = 2
self.audioRecorder = AVAudioRecorder(URL: self.audioURL, settings: recordSettings, error: nil)
self.audioRecorder.meteringEnabled = true
self.audioRecorder.prepareToRecord()
// Super init is below
super.init(coder: aDecoder)
}
you will then have to implement your buttons of course
something like this
#IBAction func recordPressed(sender: AnyObject) {
if self.audioRecorder.recording {
self.audioRecorder.stop()
self.recordButton.setTitle("RECORD", forState: UIControlState.Normal)
self.playButton.enabled = true
} else {
var session = AVAudioSession.sharedInstance()
session.setActive(true, error: nil)
self.audioRecorder.record()
self.recordButton.setTitle("PLAY", forState: UIControlState.Normal)
self.playButton.enabled = false
}
}
#IBAction func playPressed(sender: AnyObject) {
self.audioPlayer = AVAudioPlayer(contentsOfURL: self.audioURL, error: nil)
audioPlayer.play()
}
}
Related
So I followed this tutorial on youtube: https://www.youtube.com/watch?v=uUTevJAhL3Q, and I can't figure out how to update the rest to Swift 3; I am relatively new at Swift and still learning, if anyone could help me out a bit that would be fantastic! I am trying to re-create a snapchat camera-view.
import UIKit
import AVFoundation
class CameraVC: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
var captureSession : AVCaptureSession?
var stillImageOutput : AVCaptureStillImageOutput?
var previewLayer : AVCaptureVideoPreviewLayer?
#IBOutlet var cameraView: UIView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
previewLayer?.frame = cameraView.bounds
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
captureSession = AVCaptureSession()
captureSession?.sessionPreset = AVCaptureSessionPreset1920x1080
var backCamera = AVCaptureDevice.defaultDevice(withMediaType: AVMediaTypeVideo)
var error : NSError?
var input = AVCaptureDeviceInput(device: backCamera, error: &error)
if (error == nil && captureSession?.canAddInput(input) != nil){
captureSession?.addInput(input)
stillImageOutput = AVCaptureStillImageOutput()
stillImageOutput?.outputSettings = [AVVideoCodecKey : AVVideoCodecJPEG]
if (captureSession?.canAddOutput(stillImageOutput) != nil){
captureSession?.addOutput(stillImageOutput)
previewLayer = AVCaptureVideoPreviewLayer(session: captureSession)
previewLayer?.videoGravity = AVLayerVideoGravityResizeAspect
previewLayer?.connection.videoOrientation = AVCaptureVideoOrientation.portrait
cameraView.layer.addSublayer(previewLayer!)
captureSession?.startRunning()
}
}
}
#IBOutlet var tempImageView: UIImageView!
func didPressTakePhoto(){
if let videoConnection = stillImageOutput?.connection(withMediaType: AVMediaTypeVideo){
videoConnection.videoOrientation = AVCaptureVideoOrientation.portrait
stillImageOutput?.captureStillImageAsynchronously(from: videoConnection, completionHandler: {
(sampleBuffer, error) in
if sampleBuffer != nil {
var imageData = AVCaptureStillImageOutput.jpegStillImageNSDataRepresentation(sampleBuffer)
var dataProvider = CGDataProvider(data: imageData as! CFData)
var cgImageRef = CGImage(jpegDataProviderSource: dataProvider, decode: nil, shouldInterpolate: true, intent: kCGRenderingIntentDefault)
var image = UIImage(CGImage: cgImageRef, scale: 1.0, orientation: UIImageOrientation.Right)
self.tempImageView.image = image
self.tempImageView.isHidden = false
}
})
}
}
var didTakePhoto = Bool()
func didPressTakeAnother(){
if didTakePhoto == true{
tempImageView.isHidden = true
didTakePhoto = false
}
else{
captureSession?.startRunning()
didTakePhoto = true
didPressTakePhoto()
}
}
func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
didPressTakeAnother()
}
}
Swift 3 introduced the idea of error handling and most (if not all) of Apple's Foundation and Core APIs got updated so that instead of using capturing an error with the inout &error parameter the method throws and error.
So code that you used to write like this:
var error : NSError?
var input = AVCaptureDeviceInput(device: backCamera, error: &error)
In Swift 3 is updated to drop the error parameter, and you use the new do, try, catch syntax:
do {
var input = try AVCaptureDeviceInput(device: backCamera)
//... input was assigned without an error, you can use in the scope of this statement
}
catch {
// an error occured attempting `AVCaptureDeviceInput(device: backCamera)`
print("an error occured")
}
Of if you prefer, the shorthand versions:
var input = try! AVCaptureDeviceInput(device: backCamera)
// not safe: app will crash if AVCaptureDeviceInput fails
var input = try? AVCaptureDeviceInput(device: backCamera)
// safer: input will be assigned as `nil` if AVCaptureDeviceInput fails
Next time you're converting from Swift 2 to Swift 3, try using Xcode's 'refactor' tool it does a pretty good job of automatically making these changes for you.
I would like to open the camera and library in landscape mode, but I not be able to do it.
Please someone could explain and give me an example.
I have used the below code but seems some code is missing (for instance: import library), I will need a complete example, how I could implement, functions to open library and the camera and save in the camera roll.
override func viewWillTransitionToSize(size: CGSize, withTransitionCoordinator coordinator: UIViewControllerTransitionCoordinator) {
super.viewWillTransitionToSize(size, withTransitionCoordinator: coordinator)
if let connection = self.previewLayer?.connection {
var currentDevice: UIDevice = UIDevice.currentDevice()
var orientation: UIDeviceOrientation = currentDevice.orientation
var previewLayerConnection : AVCaptureConnection = connection
if (previewLayerConnection.supportsVideoOrientation)
{
switch (orientation)
{
case .Portrait:
previewLayerConnection.videoOrientation = AVCaptureVideoOrientation.Portrait
break
case .LandscapeRight:
previewLayerConnection.videoOrientation = AVCaptureVideoOrientation.LandscapeLeft
break
case .LandscapeLeft:
previewLayerConnection.videoOrientation = AVCaptureVideoOrientation.LandscapeRight
break
case .PortraitUpsideDown:
previewLayerConnection.videoOrientation = AVCaptureVideoOrientation.PortraitUpsideDown
break
default:
previewLayerConnection.videoOrientation = AVCaptureVideoOrientation.Portrait
break
}
}
}
}
Also indicate that I already have some code implemented then
I find it easier to implement without the use of additional libraries like AVFoundation.
I am currently using this code in order to open library and camera.
#IBAction func openLibrary(sender: AnyObject) { ///accion del boton Library
imagePicker.allowsEditing = false
imagePicker.sourceType = .PhotoLibrary
presentViewController(imagePicker, animated:true, completion: nil)
}
#IBAction func openCamera(sender: AnyObject) { ///accion del boton Camara
imagePicker.allowsEditing = false
imagePicker.sourceType = .Camera
presentViewController(imagePicker, animated:true, completion: nil)
}
in ur app delegate use this function:
func application(application: UIApplication, supportedInterfaceOrientationsForWindow window: UIWindow?) -> Int {
if let presentedView = self.window?.rootViewController?.presentedViewController as? CameraViewController {
//cameraView
return Int(UIInterfaceOrientationMask.Landscape.rawValue)
}
} else {
//other view
}
}
Swift 2
func application(application: UIApplication, supportedInterfaceOrientationsForWindow window: UIWindow?) -> UIInterfaceOrientationMask {
if let presentedView = self.window?.rootViewController?.presentedViewController as? YourCameraViewController {
//cameraView
return UIInterfaceOrientationMask.Landscape
} else {
//other view
// return here ur orientation for other view
}
}
Please solve my question, why is the background music not working? This is my code, hope someone can solve it.
// Just to format it..
#IBOutlet var UsernameTextField: UITextField!
#IBOutlet var PasswordTextField: UITextField!
#IBOutlet var EmailTextField: UITextField!
#IBAction func LogIn(sender: AnyObject) {
}
func Login(){
var user = PFUser()
user.username = UsernameTextField.text!
user.password = PasswordTextField.text!
PFUser.logInWithUsernameInBackground(UsernameTextField.text, password: PasswordTextField.text, block: {
(User : PFUser?, Error : NSError?) -> Void in
if Error == nil{
dispatch_sync(dispatch_get_main_queue()){
var Storyboard = UIStoryboard(name: "Main", bundle: nil)
var MainVC : UIViewController = Storyboard.instantiateViewControllerWithIdentifier("MainVC") as! UIViewController
self.presentViewController(MainVC, animated: true, completion: nil)
}
}
else{
NSLog("Sorry, you've typed either username or password wrongly.")
}
})
}
#IBAction func signUpButton(sender: AnyObject) {
signUp() // Calling signUp function here that is declared below.
}
func signUp(){
// Do sign up stuff.
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
playBackgroundMusic("IntroMusic")
backgroundMusicPlayer.play()
let soundFilePath = NSBundle.mainBundle().pathForResource("Background", ofType: "mp3")
let soundFileURL = NSURL(fileURLWithPath: soundFilePath!)
let player = AVAudioPlayer(contentsOfURL: soundFileURL, error: nil)
player.numberOfLoops = -1 //infinite
player.play()
func signUp(){
var user = PFUser()
user.username = UsernameTextField.text!
user.password = PasswordTextField.text!
user.email = EmailTextField.text!
}
let user = PFUser()
user.username = "Name:"
user.password = "Pass:"
user.email = "Email:"
user.signUpInBackgroundWithBlock { (success: Bool, error: NSError?) -> Void in
if error == nil {
// Hooray! Let them use the app now.
} else {
// Examine the error object and inform the user.
}
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
var backgroundMusicPlayer: AVAudioPlayer!
func playBackgroundMusic(filename: String) {
//The location of the file and its type
let url = NSBundle.mainBundle().URLForResource("Background", withExtension: "mp3")
//Returns an error if it can't find the file name
if (url == nil) {
println("Could not find the file \(filename)")
}
var error: NSError? = nil
//Assigns the actual music to the music player
backgroundMusicPlayer = AVAudioPlayer(contentsOfURL: url, error: &error)
//Error if it failed to create the music player
if backgroundMusicPlayer == nil {
println("Could not create audio player: \(error!)")
return
}
//A negative means it loops forever
backgroundMusicPlayer.numberOfLoops = -1
backgroundMusicPlayer.prepareToPlay()
backgroundMusicPlayer.play()
}
As Leo Dabus suggested declare your player instance outside of viewDidLoad method and your code will be:
var player : AVAudioPlayer!
override func viewDidLoad() {
super.viewDidLoad()
let soundFilePath = NSBundle.mainBundle().pathForResource("Background", ofType: "mp3")
let soundFileURL = NSURL(fileURLWithPath: soundFilePath!)
player = AVAudioPlayer(contentsOfURL: soundFileURL, error: nil)
player.numberOfLoops = -1 //infinite
player.play()
}
this is what i have so far:
import Foundation
import Parse
import UIKit
import Bolts
class SignUpViewController: UIViewController, UITextFieldDelegate {
#IBOutlet weak var statusLabel: UILabel!
#IBOutlet weak var emailTextField: UITextField!
#IBOutlet weak var passwordTextField: UITextField!
#IBOutlet weak var createAccountButton: UIButton!
override func viewDidLoad()
{
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
emailTextField.delegate = self;
passwordTextField.delegate = self;
}
override func didReceiveMemoryWarning()
{
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
#IBAction func createAccountButtonPressed(sender: AnyObject) {
if verifyEmailDomain(self.emailTextField.text)
{
createAccount(self.emailTextField.text, password: self.passwordTextField.text)
}
else
{
//self.statusLabel.text = "Email domain is not valid.";
let alert = UIAlertView()
alert.title = "Invalid Email Domain"
alert.message = "Make sure you entered in your address correctly. If you did, ask your system about using PageMD! Thanks."
alert.addButtonWithTitle("Close")
alert.show()
}
}
func verifyEmailDomain(email: String) -> Bool
{
var isVerifiedDomain = false
let userDomain: String = (email.componentsSeparatedByString("#")).last!
//NSLog(userDomain)
let validDomainsFileLocation = NSBundle.mainBundle().pathForResource("ValidDomains", ofType: "txt")
var validDomainsFileContent = NSString(contentsOfFile: validDomainsFileLocation!, encoding: NSUTF8StringEncoding, error: nil)
// NSLog(validDomainsFileContent! as String)
let validDomains = validDomainsFileContent!.componentsSeparatedByString("\n")
for domain in validDomains
{
NSLog(domain as! NSString as String)
if userDomain == (domain as? NSString)
{
isVerifiedDomain = true
break
}
}
return isVerifiedDomain
}
func createAccount(email: String, password: String)
{
var newUser = PFUser()
newUser.username = email // We want the user to login only with their email.
newUser.email = email
newUser.password = password
newUser.signUpInBackgroundWithBlock { (succeeded: Bool, error: NSError?) -> Void in
if error == nil
{
// Account created successfully!
if succeeded == true
{
self.statusLabel.text = "Account created!"
}
}
else
{
if let errorField = error!.userInfo
{
self.statusLabel.text = (errorField["error"] as! NSString) as String
}
else
{
// No userInfo dictionary present
// Help from http://stackoverflow.com/questions/25381338/nsobject-anyobject-does-not-have-a-member-named-subscript-error-in-xcode
}
}
}
}
func textFieldShouldReturn(textField: UITextField) -> Bool
{
textField.resignFirstResponder()
return true;
}
}
when i run it i receive this in my terminal for xcode:
fatal error: unexpectedly found nil while unwrapping an Optional value
(lldb)
and highlighted in green is:
var validDomainsFileContent = NSString(contentsOfFile: validDomainsFileLocation!, encoding: NSUTF8StringEncoding, error: nil)
what can i do to avoid this error?
I'm trying to create a login that uses the emailVerified feature from parse but I keep receiving this error and cant save the email to the core or send the verification email to the user. What can i do to make this code work and stop the error from coming up?
In that case, the file at validDominsfileContent wasn't found. You need to make sure that the file is included in your Bundle.
To do that, open the Bundle-Resources:
Project > App target > Build Phases > Copy bundle resources
There you save your file. Now it should be found by Swift.
All ,
I need to create a sample audio player and recorder, its not erroring but its not playing and perhaps not recording.. any ideas ?
#IBAction func Play(AnyObject)
{
println ("Play")
let path = NSBundle.mainBundle().pathForResource("171010", ofType:"m4a")
let fileURL = NSURL(fileURLWithPath: path)
player = AVAudioPlayer(contentsOfURL: outputFileURL, error: nil)
player.prepareToPlay()
player.delegate = self
player.play()
}
#IBAction func Record(AnyObject)
{
filename = "171010.m4a"
let paths: NSArray = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)
var pathComponents = [paths.lastObject as String, filename as String]
outputFileURL = NSURL.fileURLWithPathComponents(pathComponents)
settings.setValue(kAudioFormatMPEG4AAC, forKey: AVFormatIDKey)
settings.setValue(44100.0, forKey: AVSampleRateKey)
settings.setValue(2, forKey: AVNumberOfChannelsKey)
recorder = AVAudioRecorder(URL: outputFileURL, settings: settings, error: &error)
recorder.delegate = self;
recorder.prepareToRecord()
recorder.record()
}
#IBAction func Stop(AnyObject)
{
recorder.stop()
println("Stop")
}
and the globals at the top are :
class MainMenu: UIViewController , AVAudioRecorderDelegate , AVAudioPlayerDelegate {
var filename: String!
var outputFileURL: NSURL!
var recorder: AVAudioRecorder!
var error: NSError?
var settings: NSMutableDictionary = NSMutableDictionary()
var player : AVAudioPlayer! = nil
Any ideas ? I don't know if its recording and creating the file. As I am getting URL is nill on the playing function. This is wired up to a storyboard with buttons. Any help within this simple stuff in swift would be brilliant.
I have changed it to this and this should work ? Can anyone advise ?
#IBAction func Play(AnyObject)
{
println ("Play")
var audioPlayer = AVAudioPlayer()
filename = "171010.m4a"
let paths: NSArray = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)
var pathComponents = [paths.lastObject as String, filename as String]
outputFileURL = NSURL.fileURLWithPathComponents(pathComponents)
audioPlayer = AVAudioPlayer(contentsOfURL: outputFileURL, error: nil)
audioPlayer.prepareToPlay()
audioPlayer.delegate = self
audioPlayer.play()
}
#IBAction func Record(AnyObject)
{
filename = "171010.m4a"
let paths: NSArray = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)
var pathComponents = [paths.lastObject as String, filename as String]
outputFileURL = NSURL.fileURLWithPathComponents(pathComponents)
settings.setValue(kAudioFormatMPEG4AAC, forKey: AVFormatIDKey)
settings.setValue(44100.0, forKey: AVSampleRateKey)
settings.setValue(2, forKey: AVNumberOfChannelsKey)
recorder = AVAudioRecorder(URL: outputFileURL, settings: settings, error: &error)
recorder.delegate = self;
recorder.prepareToRecord()
recorder.record()
}
The player needs to be an ivar so it isn't popped off the stack before playing.
Here is a github project with a functioning recorder if you need more info.
Also, the convention is to start function names with a lowercase character.