How to make the camera close after the photo and the controller opens.I want to close the camera after the session, tell me what method it is. I watched a lot of articles here and wrote it down, it seems to be correct. But I don’t see the effect.
Я записал этот метод в viewDidDissaper. Tell me how to specify correctly so that after I take a photo, it opens ViewController
import UIKit
import AVFoundation
import PhotoEditorSDK
import Photos
class ViewController: UIViewController {
#IBOutlet weak var ImageGray: UIImageView!
var session = AVCaptureSession()
var camera : AVCaptureDevice?
var cameraPreviewLayer : AVCaptureVideoPreviewLayer?
var cameraCaptureOutput : AVCapturePhotoOutput?
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
// let grayImage = openCVWrapper.toGray(ImageGray.image!)
// ImageGray.image = grayImage
}
func stopCaptureSession() {
if let inputs = session.inputs as? [AVCaptureDeviceInput] {
for input in inputs {
session.removeInput(input)
}
let vc = self.storyboard!.instantiateViewController(withIdentifier: "viewController")
self.present(vc, animated: true, completion: nil)
}
}
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
// Setup your camera here...
initializeCaptureSession()
}
override func viewDidDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
stopCaptureSession()
}
#IBAction func cameraShot(_ sender: Any) {
takePicture()
}
func initializeCaptureSession() {
session.sessionPreset = AVCaptureSession.Preset.high
camera = AVCaptureDevice.default(for: AVMediaType.video)
do {
let cameraCaptureInput = try AVCaptureDeviceInput(device: camera!)
cameraCaptureOutput = AVCapturePhotoOutput()
session.addInput(cameraCaptureInput)
session.addOutput(cameraCaptureOutput!)
} catch {
print(error.localizedDescription)
}
cameraPreviewLayer = AVCaptureVideoPreviewLayer(session: session)
cameraPreviewLayer?.videoGravity = AVLayerVideoGravity.resizeAspectFill
cameraPreviewLayer?.frame = view.bounds
cameraPreviewLayer?.connection!.videoOrientation = AVCaptureVideoOrientation.portrait
view.layer.insertSublayer(cameraPreviewLayer!, at: 0)
session.startRunning()
}
func takePicture() {
let settings = AVCapturePhotoSettings()
settings.flashMode = .auto
cameraCaptureOutput?.capturePhoto(with: settings, delegate: self)
}
#IBAction func AddGray(_ sender: Any) {
let grayImage = openCVWrapper.toGray(ImageGray.image!)
ImageGray.image = grayImage
ImageGray.transform = ImageGray.transform.rotated(by: CGFloat(Double.pi / 2)) //90
}
#IBAction func addColor(_ sender: Any) {
}
}
extension ViewController : AVCapturePhotoCaptureDelegate {
func photoOutput(_ captureOutput: AVCapturePhotoOutput, didFinishProcessingPhoto photoSampleBuffer: CMSampleBuffer?, previewPhoto previewPhotoSampleBuffer: CMSampleBuffer?, resolvedSettings: AVCaptureResolvedPhotoSettings, bracketSettings: AVCaptureBracketedStillImageSettings?, error: Error?) {
if let unwrappedError = error {
print(unwrappedError.localizedDescription)
} else {
if let sampleBuffer = photoSampleBuffer, let dataImage = AVCapturePhotoOutput.jpegPhotoDataRepresentation(forJPEGSampleBuffer: sampleBuffer, previewPhotoSampleBuffer: previewPhotoSampleBuffer) {
if let finalImage = UIImage(data: dataImage) {
self.ImageGray.image = finalImage
}
}
}
}
}
Related
I have made a custom camera and want to overlay another image over it. I am using AVKit now to get the custom camera. I was able to overlay the image when I was using the built-in camera. This is the code for what I have for the custom camera. "newImage" is the image that i would like to overlay over the camera.
import UIKit
import AVKit
class liveView: UIViewController, AVCapturePhotoCaptureDelegate {
#IBOutlet weak var previewView: UIView!
#IBOutlet weak var captureImageView: UIImageView!
var captureSession: AVCaptureSession!
var stillImageOutput: AVCapturePhotoOutput!
var videoPreviewLayer: AVCaptureVideoPreviewLayer!
var newImage: UIImage!
override func viewDidLoad() {
super.viewDidLoad()
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
captureSession = AVCaptureSession()
captureSession.sessionPreset = .medium
guard let backCamera = AVCaptureDevice.default(for: AVMediaType.video)
else {
print("Unable to access back camera!")
return
}
do {
let input = try AVCaptureDeviceInput(device: backCamera)
stillImageOutput = AVCapturePhotoOutput()
if captureSession.canAddInput(input) && captureSession.canAddOutput(stillImageOutput) {
captureSession.addInput(input)
captureSession.addOutput(stillImageOutput)
// videoPreviewLayer?.frame = self.newImage.accessibilityFrame
setupLivePreview()
}
}
catch let error {
print("Error Unable to initialize back camera: \(error.localizedDescription)")
}
}
func setupLivePreview() {
videoPreviewLayer = AVCaptureVideoPreviewLayer(session: captureSession)
videoPreviewLayer.videoGravity = .resizeAspect
videoPreviewLayer.connection?.videoOrientation = .portrait
previewView.layer.addSublayer(videoPreviewLayer)
DispatchQueue.global(qos: .userInitiated).async {
self.captureSession.startRunning()
DispatchQueue.main.async {
self.videoPreviewLayer.frame = self.previewView.bounds
}
}
}
#IBAction func didTakePhoto(_sender : UIBarButtonItem) {
let settings = AVCapturePhotoSettings(format: [AVVideoCodecKey: AVVideoCodecType.jpeg])
stillImageOutput.capturePhoto(with: settings, delegate: self)
}
func photoOutput(_ output: AVCapturePhotoOutput, didFinishProcessingPhoto photo: AVCapturePhoto, error: Error?) {
guard let imageData = photo.fileDataRepresentation()
else { return }
let image = UIImage(data: imageData)
captureImageView.image = image
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
self.captureSession.stopRunning()
}
}
I'm making a custom camera. I have 2 view controllers for the camera (one for the actual capture and another for a photo preview). Here is the code in each, I have reviewed it but don't find anything wrong! My XCODE project is a single view with CoreData enabled. EDIT: I have already added the appropriate Info.Plist camera permisions.
Below is my ViewController for taking the photo:
import UIKit
import AVFoundation
class ViewController: UIViewController {
var captureSession = AVCaptureSession()
var backCamera: AVCaptureDevice?
var frontCamera: AVCaptureDevice?
var currentCamera: AVCaptureDevice?
var photoOutput: AVCapturePhotoOutput?
var cameraPreviewlayer: AVCaptureVideoPreviewLayer?
var image: UIImage?
override func viewDidLoad() {
super.viewDidLoad()
setupCaptureSession()
setupDevice()
setupInputOutput()
setupPreviewLayer()
startRunningCaptureSession()
// Do any additional setup after loading the view, typically from a nib.
}
func setupCaptureSession() {
captureSession.sessionPreset = AVCaptureSession.Preset.photo
}
func setupDevice() {
let deviceDiscoverySession = AVCaptureDevice.DiscoverySession(deviceTypes: [AVCaptureDevice.DeviceType.builtInWideAngleCamera], mediaType: AVMediaType.video, position: AVCaptureDevice.Position.unspecified)
let devices = deviceDiscoverySession.devices
for device in devices {
if device.position == AVCaptureDevice.Position.back {
backCamera = device
} else if device.position == AVCaptureDevice.Position.front {
frontCamera = device
}
}
currentCamera = backCamera
}
func setupInputOutput() {
do {
let captureDeviceInput = try AVCaptureDeviceInput(device: currentCamera!)
captureSession.addInput(captureDeviceInput)
photoOutput = AVCapturePhotoOutput()
photoOutput?.setPreparedPhotoSettingsArray([AVCapturePhotoSettings(format: [AVVideoCodecKey: AVVideoCodecType.jpeg])], completionHandler: nil)
captureSession.addOutput(photoOutput!)
} catch {
print(error)
}
}
func setupPreviewLayer(){
cameraPreviewlayer = AVCaptureVideoPreviewLayer(session: captureSession)
cameraPreviewlayer?.videoGravity = AVLayerVideoGravity.resizeAspectFill
cameraPreviewlayer?.connection?.videoOrientation = AVCaptureVideoOrientation.portrait
cameraPreviewlayer?.frame = self.view.frame
self.view.layer.insertSublayer(cameraPreviewlayer!, at: 0)
}
func startRunningCaptureSession() {
captureSession.startRunning()
}
#IBAction func CameraButton_TouchUpInside(_ sender: Any) {
let settings = AVCapturePhotoSettings()
photoOutput?.capturePhoto(with: settings, delegate: self)
// performSegue(withIdentifier: "showPhoto_Segue", sender: nil)
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "showPhoto_Segue" {
let previewVC = segue.destination as! PreviewViewController
previewVC.image = self.image
}
}
override var prefersStatusBarHidden: Bool {
return true
}
}
extension ViewController: AVCapturePhotoCaptureDelegate{
func photoOutput(_ output: AVCapturePhotoOutput, didFinishProcessingPhoto photo: AVCapturePhoto, error: Error?) {
if let imageData = photo.fileDataRepresentation() {
print(imageData)
image = UIImage(data: imageData)
performSegue(withIdentifier: "showPhoto_Segue", sender: nil)
}
}
}
This is the code for my Preview where my error occurs when I press the Cancel or Save button for the capture the user just took:
import UIKit
class PreviewViewController: UIViewController {
#IBOutlet weak var photo: UIImageView!
var image: UIImage!
override func viewDidLoad() {
super.viewDidLoad()
photo.image = self.image
}
#IBAction func cancelButton_TouchUpInside(_ sender: Any) {
dismiss(animated: true, completion: nil)
}
#IBAction func saveButton_TouchUpInside(_ sender: Any) {
}
override var prefersStatusBarHidden: Bool {
return true
}
}
I have not changed or added any code inside the AppDelegate. This is in XCODE 9 and Swift 4. Thank you for your help.
your code is fine, you just forgot to ask permission for the camera use in the info.plist file, add this "Privacy - Camera Usage Description"
If you already updated .plist file you should check Camera Usage Permission.
func checkPermissions() {
let authStatus = AVCaptureDevice.authorizationStatus(forMediaType: AVMediaTypeVideo)
switch authStatus {
case .authorized:
setupCamera()
case .denied:
alertPromptToAllowCameraAccessViaSetting()
default:
// Not determined fill fall here - after first use, when is't neither authorized, nor denied
// we try to use camera, because system will ask itself for camera permissions
setupCamera()
}
}
func alertPromptToAllowCameraAccessViaSetting() {
let alert = UIAlertController(title: "Error", message: "Camera access required to...", preferredStyle: UIAlertControllerStyle.alert)
alert.addAction(UIAlertAction(title: "Cancel", style: .default))
alert.addAction(UIAlertAction(title: "Settings", style: .cancel) { (alert) -> Void in
UIApplication.shared.openURL(URL(string: UIApplicationOpenSettingsURLString)!)
})
present(alert, animated: true)
}
I am a beginner.
I have a question....
How can I write the code so that every time the photo is snap it will be saved to the photo gallery. I just want to logic that if man press the taking a photo button, right save the photo and if i want to see the photo, i have to go to gallery. thanks for reading me.
class ViewController: UIViewController {
var captureSession = AVCaptureSession()
var backCamera: AVCaptureDevice?
var frontCamera: AVCaptureDevice?
var currentCamera: AVCaptureDevice?
var photoOutput: AVCapturePhotoOutput?
var cameraPreviewLayer: AVCaptureVideoPreviewLayer?
var image: UIImage?
override func viewDidLoad() {
super.viewDidLoad()
setupCaptureSession()
setupDevice()
setupInputOutput()
setupPreviewLayer()
startRunningCaptureSession()
}
func setupCaptureSession(){
captureSession.sessionPreset = AVCaptureSession.Preset.photo
}
func setupDevice(){
let deviceDiscoverySession = AVCaptureDevice.DiscoverySession(deviceTypes: [AVCaptureDevice.DeviceType.builtInWideAngleCamera], mediaType: AVMediaType.video, position: AVCaptureDevice.Position.unspecified)
let device = deviceDiscoverySession.devices
for device in device {
if device.position == AVCaptureDevice.Position.back {
backCamera = device
} else if device.position == AVCaptureDevice.Position.front {
frontCamera = device
}
currentCamera = backCamera
}
}
func setupInputOutput(){
do {
let captureDeviceInput = try AVCaptureDeviceInput(device: currentCamera!)
captureSession.addInput(captureDeviceInput)
photoOutput = AVCapturePhotoOutput()
photoOutput?.setPreparedPhotoSettingsArray([AVCapturePhotoSettings(format: [AVVideoCodecKey : AVVideoCodecType.jpeg])], completionHandler: nil)
captureSession.addOutput(photoOutput!)
} catch {
print(error)
}
}
func setupPreviewLayer(){
cameraPreviewLayer = AVCaptureVideoPreviewLayer(session: captureSession)
cameraPreviewLayer?.videoGravity = AVLayerVideoGravity.resizeAspectFill
cameraPreviewLayer?.connection?.videoOrientation = AVCaptureVideoOrientation.portrait
cameraPreviewLayer?.frame = self.view.frame
self.view.layer.insertSublayer(cameraPreviewLayer!, at: 0)
}
func startRunningCaptureSession(){
captureSession.startRunning()
}
#IBAction func cameraButton_TouchIpInside(_ sender: Any) {
let settings = AVCapturePhotoSettings()
photoOutput?.capturePhoto(with: settings, delegate: self)
// performSegue(withIdentifier: "showPhoto_Segue", sender: nil)
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "showPhoto_Segue" {
let previewVC = segue.destination as! PreviewViewController
previewVC.image = self.image
}
}
}
extension ViewController: AVCapturePhotoCaptureDelegate {
func photoOutput(_ output: AVCapturePhotoOutput, didFinishProcessingPhoto photo: AVCapturePhoto, error: Error?) {
if let imageData = photo.fileDataRepresentation() {
print(imageData)
image = UIImage(data: imageData)
performSegue(withIdentifier: "showPhoto_Segue", sender: nil)
}
}
} // this is main ViewController.
import UIKit
class PreviewViewController: UIViewController {
#IBOutlet weak var photo: UIImageView!
var image: UIImage!
override func viewDidLoad() {
super.viewDidLoad()
photo.image = self.image
// Do any additional setup after loading the view.
}
#IBAction func cancelButton_TouchUpInside(_ sender: Any) {
dismiss(animated: true, completion: nil)
}
#IBAction func saveButton_YouvhUpInside(_ sender: Any) {
UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil)
dismiss(animated: true, completion: nil)
}
} // this is second ViewController
I have been struggling with this error for a few days where if I take picture segue screens, dismiss the current screen flip the camera and take a picture the app crashes with an error.
[AVCapturePhotoOutput capturePhotoWithSettings:delegate:] No active and enabled video connection'
I have narrowed the error down to three lines of code, although I am not sure how to fix it I believe the solution has something to do with my AVCapturePhotoSettings
This is where I have narrowed down the trouble code to:
#IBAction func cameraButton_TouchUpInside(_ sender: Any) {
let settings = AVCapturePhotoSettings()
photoOutPut?.capturePhoto(with: settings, delegate: self as AVCapturePhotoCaptureDelegate)
}
Have I set up the settings incorrectly. Thank you
Here is the code in its entirety
import UIKit
import AVFoundation
protocol previewSegueDelegate {
func previewSegueDelegate(image:UIImage,device:AVCaptureDevice)
}
class MainCameraCollectionViewCell: UICollectionViewCell {
var gdelegate: gestureDelegate?
var pdelegate: previewSegueDelegate?
#IBOutlet weak var myView: UIView!
var captureSession = AVCaptureSession()
private var sessionQueue: DispatchQueue!
var captureConnection = AVCaptureConnection()
var currentCamera: AVCaptureDevice?
var photoOutPut: AVCapturePhotoOutput?
var cameraPreviewLayer: AVCaptureVideoPreviewLayer?
var image: UIImage?
var usingFrontCamera = false
override func awakeFromNib() {
super.awakeFromNib()
setupCaptureSession()
setupDevice()
setupInput()
setupPreviewLayer()
startRunningCaptureSession()
print("Inside of camera cell")
}
func setupCaptureSession(){
captureSession.sessionPreset = AVCaptureSession.Preset.photo
sessionQueue = DispatchQueue(label: "session queue")
}
func setupDevice(usingFrontCamera:Bool = false){
sessionQueue.async {
let deviceDiscoverySession = AVCaptureDevice.DiscoverySession(deviceTypes: [AVCaptureDevice.DeviceType.builtInWideAngleCamera], mediaType: AVMediaType.video, position: AVCaptureDevice.Position.unspecified)
let devices = deviceDiscoverySession.devices
for device in devices{
if usingFrontCamera && device.position == AVCaptureDevice.Position.front {
self.currentCamera = device
} else if device.position == AVCaptureDevice.Position.back {
self.currentCamera = device
}
}
}
}
func setupInput() {
sessionQueue.async {
do {
let captureDeviceInput = try AVCaptureDeviceInput(device: self.currentCamera!)
if self.captureSession.canAddInput(captureDeviceInput) {
self.captureSession.addInput(captureDeviceInput)
}
self.photoOutPut = AVCapturePhotoOutput()
self.photoOutPut?.setPreparedPhotoSettingsArray([AVCapturePhotoSettings(format:[AVVideoCodecKey: AVVideoCodecType.jpeg])], completionHandler: nil)
if self.captureSession.canAddOutput(self.photoOutPut!) {
self.captureSession.addOutput(self.photoOutPut!)
}
} catch {
print(error)
}
}
}
func setupPreviewLayer(){
cameraPreviewLayer = AVCaptureVideoPreviewLayer(session: captureSession)
cameraPreviewLayer?.videoGravity = AVLayerVideoGravity.resizeAspectFill
cameraPreviewLayer?.connection?.videoOrientation = AVCaptureVideoOrientation.portrait
cameraPreviewLayer?.frame = CGRect(x: 0, y: 0, width: UIScreen.main.bounds.width, height: UIScreen.main.bounds.height)
self.layer.insertSublayer(cameraPreviewLayer!, at: 0)
}
func startRunningCaptureSession(){
captureSession.startRunning()
}
#IBAction func cameraButton_TouchUpInside(_ sender: Any) {
let settings = AVCapturePhotoSettings()
photoOutPut?.capturePhoto(with: settings, delegate: self as AVCapturePhotoCaptureDelegate)
print("camera button touched")
}
#IBAction func FlipThe_camera(_ sender: UIButton) {
print("Flip Touched")
captureSession.beginConfiguration()
if let inputs = captureSession.inputs as? [AVCaptureDeviceInput] {
for input in inputs {
captureSession.removeInput(input)
}
}
usingFrontCamera = !usingFrontCamera
setupCaptureSession()
setupDevice(usingFrontCamera: usingFrontCamera)
setupInput()
captureSession.commitConfiguration()
startRunningCaptureSession()
}
}
extension MainCameraCollectionViewCell: AVCapturePhotoCaptureDelegate{
func photoOutput(_ output: AVCapturePhotoOutput, didFinishProcessingPhoto photo: AVCapturePhoto, error: Error?) {
if let imageData = photo.fileDataRepresentation(){
print(imageData)
image = UIImage(data: imageData)
if(self.image == nil){
print("The image is empty")
}
pdelegate?.previewSegueDelegate(image: self.image!, device: currentCamera!)
}
}
}
The logic of camera switch is wrong.
#IBAction func FlipThe_camera(_ sender: UIButton) {
print("Flip Touched")
captureSession.beginConfiguration()
if let inputs = captureSession.inputs as? [AVCaptureDeviceInput] {
for input in inputs {
captureSession.removeInput(input)
}
}
usingFrontCamera = !usingFrontCamera
setupCaptureSession()
setupDevice(usingFrontCamera: usingFrontCamera)
setupInput()
captureSession.commitConfiguration()
startRunningCaptureSession()
}
You should not add output again in setupInput() .
And should not start running session again in startRunningCaptureSession()
I have the custom camera view. What I want is that I only want to capture the image inside of custom camera view when I press button.But it take the whole screen not just camera view. I also set preview layer's frame to cameraView's frame. Here is my code
class CustomCameraVC: UIViewController, AVCapturePhotoCaptureDelegate {
#IBOutlet weak var cameraView: UIView!
#IBOutlet weak var shotImage: UIImageView!
var captureSession: AVCaptureSession!
var imageOutput: AVCapturePhotoOutput!
override func viewDidLoad() {
super.viewDidLoad()
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
captureSession = AVCaptureSession()
captureSession.sessionPreset = AVCaptureSessionPresetMedium
imageOutput = AVCapturePhotoOutput()
let device = AVCaptureDevice.defaultDevice(withMediaType: AVMediaTypeVideo)
do {
let input = try AVCaptureDeviceInput(device: device)
if captureSession.canAddInput(input) {
captureSession.addInput(input)
if captureSession.canAddOutput(imageOutput) {
captureSession.addOutput(imageOutput)
captureSession.startRunning()
let captureVideoLayer: AVCaptureVideoPreviewLayer = AVCaptureVideoPreviewLayer.init(session: captureSession)
captureVideoLayer.videoGravity = AVLayerVideoGravityResizeAspectFill
captureVideoLayer.frame = self.cameraView.layer.frame
self.cameraView.layer.addSublayer(captureVideoLayer)
}
}
} catch {
print("error")
}
}
#IBAction func takePhoto(_ sender: UIButton) {
let settingsForMonitoring = AVCapturePhotoSettings()
settingsForMonitoring.flashMode = .auto
settingsForMonitoring.isAutoStillImageStabilizationEnabled = true
settingsForMonitoring.isHighResolutionPhotoEnabled = false
imageOutput?.capturePhoto(with: settingsForMonitoring, delegate: self)
}
func capture(_ captureOutput: AVCapturePhotoOutput, didFinishProcessingPhotoSampleBuffer photoSampleBuffer: CMSampleBuffer?, previewPhotoSampleBuffer: CMSampleBuffer?, resolvedSettings: AVCaptureResolvedPhotoSettings, bracketSettings: AVCaptureBracketedStillImageSettings?, error: Error?) {
if let photoSampleBuffer = photoSampleBuffer {
let photoData = AVCapturePhotoOutput.jpegPhotoDataRepresentation(forJPEGSampleBuffer: photoSampleBuffer, previewPhotoSampleBuffer: previewPhotoSampleBuffer)
let image = UIImage(data: photoData!)
shotImage.image = UIImage(data: photoData!)
UIImageWriteToSavedPhotosAlbum(image!, nil, nil, nil)
}
}
}