目前，当我点击捕获照片按钮时，它会拍摄照片并弹出预览，我可以将照片保存到相机胶卷。
我想对视频做同样的事情，但我无法录制视频或甚至知道如何开始。
我使用了button.addTarget(self, action: #selector(handleCaptureVideo), for: .touchDown)并打印出“视频正在录制...”所以我看到它正常工作，但我不知道该放什么来让视频实际开始录制。
import UIKit
import AVFoundation
class cameraController: UIViewController, AVCapturePhotoCaptureDelegate {
let capturePhotoButton: UIButton = {
let button = UIButton(type: .system)
button.setImage(#imageLiteral(resourceName: "capture_photo"), for: .normal)
button.addTarget(self, action: #selector(handleCapturePhoto), for: .touchUpInside)
button.addTarget(self, action: #selector(handleCaptureVideo), for: .touchDown)
return button
}()
let settingsButton: UIButton = {
let button = UIButton(type: .system)
button.setImage(#imageLiteral(resourceName: "gear"), for: .normal)
button.addTarget(self, action: #selector(handleSettings), for: .touchUpInside)
return button
}()
let cameraFlipButton: UIButton = {
let button = UIButton(type: .system)
button.setImage(#imageLiteral(resourceName: "right_arrow_shadow"), for: .normal)
button.addTarget(self, action: #selector(handleReversingCamera), for: .touchUpInside)
return button
}()
override func viewDidLoad() {
super.viewDidLoad()
setupCameraSession()
setupHUD()
handleSettings()
handleReversingCamera()
}
override var prefersStatusBarHidden: Bool {
return true
}
fileprivate func setupHUD() {
view.addSubview(capturePhotoButton)
capturePhotoButton.anchor(top: nil, left: nil, bottom: view.bottomAnchor, right: nil, paddingTop: 0, paddingLeft: 0, paddingBottom: 24, paddingRight: 0, width: 80, height: 80)
capturePhotoButton.centerXAnchor.constraint(equalTo: view.centerXAnchor).isActive = true
}
@objc func handleCaptureVideo() {
print("Video is recording...")
}
@objc func handleCapturePhoto() {
print("Capturing Photo...")
let settings = AVCapturePhotoSettings()
guard let previewFormatType = settings.availablePreviewPhotoPixelFormatTypes.first else { return }
settings.previewPhotoFormat = [kCVPixelBufferPixelFormatTypeKey as String: previewFormatType]
output.capturePhoto(with: settings, delegate: self)
}
@objc func handleReversingCamera() {
view.addSubview(cameraFlipButton)
cameraFlipButton.anchor(top: nil, left: nil, bottom: view.bottomAnchor, right: view.rightAnchor, paddingTop: 0, paddingLeft: 0, paddingBottom: 48, paddingRight: 24, width: 50, height: 50)
print("Camera just flipped...")
}
@objc func handleSettings() {
view.addSubview(settingsButton)
settingsButton.anchor(top: view.topAnchor, left: view.leftAnchor, bottom: nil, right: nil, paddingTop: 12, paddingLeft: 12, paddingBottom: 0, paddingRight: 0, width: 50, height: 50)
let goToSettings = settingsViewController()
let settingsController = UINavigationController(rootViewController: goToSettings)
present(settingsController, animated: true, completion: nil)
print("Settings Opened Up...")
}
func photoOutput(_ captureOutput: AVCapturePhotoOutput, didFinishProcessingPhoto photoSampleBuffer:
CMSampleBuffer?, previewPhoto previewPhotoSampleBuffer: CMSampleBuffer?, resolvedSettings: AVCaptureResolvedPhotoSettings, bracketSettings: AVCaptureBracketedStillImageSettings?, error: Error?) {
let imageData = AVCapturePhotoOutput.jpegPhotoDataRepresentation(forJPEGSampleBuffer: photoSampleBuffer!, previewPhotoSampleBuffer: previewPhotoSampleBuffer!)
let previewImage = UIImage(data: imageData!)
let containerView = PreviewPhotoContainerView()
containerView.previewImageView.image = previewImage
view.addSubview(containerView)
containerView.anchor(top: view.topAnchor, left: view.leftAnchor, bottom: view.bottomAnchor, right: view.rightAnchor, paddingTop: 0, paddingLeft: 0, paddingBottom: 0, paddingRight: 0, width: 0, height: 0)
/* let previewImageView = UIImageView(image: previewImage)
view.addSubview(previewImageView)
previewImageView.anchor(top: view.topAnchor, left: view.leftAnchor, bottom: view.bottomAnchor, right: view.rightAnchor, paddingTop: 0, paddingLeft: 0, paddingBottom: 0, paddingRight: 0, width: 0, height: 0)
print("Did finish processing sample image buffer") */
}
// Capture Photo
let output = AVCapturePhotoOutput()
fileprivate func setupCameraSession() {
let captureSession = AVCaptureSession()
// 1. Setup Inputs
let captureDevice = AVCaptureDevice.default(for: AVMediaType.video)
do {
let input = try AVCaptureDeviceInput(device: captureDevice!)
if captureSession.canAddInput(input) {
captureSession.addInput(input)
}
} catch let err {
print("Could not print camera input:", err)
}
// 2. Setup Output
if captureSession.canAddOutput(output) {
captureSession.addOutput(output)
}
// 3. Setup Output Preview
let previewLayer = AVCaptureVideoPreviewLayer(session: captureSession)
previewLayer.frame = view.frame
view.layer.addSublayer(previewLayer)
previewLayer.videoGravity = .resizeAspectFill
captureSession.startRunning()
}
答案 0 :(得分：2)
您需要使用var movieFileOutput = AVCaptureMovieFileOutput()
captureSession?.addOutput(movieFileOutput)
并将其添加到捕获会话中。要使用相同的按钮 - 您可以在按钮上设置长按手势识别器，并在长按时开始录制，并在释放长按时停止录制。像Instagram的故事。
添加电影文件输出
let longPressGesture = UILongPressGestureRecognizer.init(target: self, action: #selector(handleLongPress))
self.capturePhotoButton.addGestureRecognizer(longPressGesture);
将长按手势添加到按钮
func handleLongPress(gestureRecognizer: UILongPressGestureRecognizer) {
if gestureRecognizer.state == UIGestureRecognizerState.began {
debugPrint("long press started")
let documentsURL = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)[0] as URL
let filePath = documentsURL.appendingPathComponent("tempMovie.mp4")
if FileManager.default.fileExists(atPath: filePath.absoluteString) {
do {
try FileManager.default.removeItem(at: filePath)
}
catch {
// exception while deleting old cached file
// ignore error if any
}
}
movieFileOutput?.startRecording(toOutputFileURL: filePath, recordingDelegate: self)
}
else if gestureRecognizer.state == UIGestureRecognizerState.ended {
debugPrint("longpress ended")
movieFileOutput?.stopRecording()
}
}
长按
开始和停止录制视频function getEmployeeName_(){
try{
var username = getUserName_();
var formObject = {verb:'GET',url:'/Employees?Emp_Email='+g_obj.current_user_email};
var response_obj = processForm(formObject);
response_obj = JSON.parse(response_obj);
var userObj = {};
if(response_obj != undefined && response_obj.status != undefined && response_obj.status == 'success'){
if(response_obj['data'].length >0){
userObj = response_obj['data'][0];
}
}
return userObj.Emp_Name;
}catch(e){
Logger.log(e.message);
return { status: 'error', message: 'Something went wrong while fetching User Name.'};
}
}