【发布时间】：2017-03-31 17:12:45
【问题描述】：
我的前置摄像头有问题，它会因为某种原因翻转图片。我尝试使用imageView.transform = CGAffineTransform(scaleX: -1, y: 1) 来避免这个问题并且它奏效了。但我意识到我也在翻转后置摄像头。有什么解决办法吗？
ImagePreviewViewController：
@IBAction func close(_ sender: Any) {
let cameraViewController = storyboard?.instantiateViewController(withIdentifier: "CameraViewController") as! CameraViewController
navigationController?.pushViewController(cameraViewController, animated: true)
}
@IBOutlet weak var close: UIButton!
var capturedImage : UIImage?
@IBOutlet weak var imageView: UIImageView!
override func viewDidLoad() {
super.viewDidLoad()
imageView.image = capturedImage
close.setImage(UIImage(named: "Close.png"), for: UIControlState.normal)
//imageView.transform = CGAffineTransform(scaleX: -1, y: 1)
}
CameraViewController：
@IBOutlet var cameraView: UIView!
let session = AVCaptureSession()
var stillImageOutput: AVCaptureStillImageOutput = AVCaptureStillImageOutput()
var camera : AVCaptureDevice?
var cameraPreviewLayer : AVCaptureVideoPreviewLayer?
var cameraCaptureOutput : AVCapturePhotoOutput?
var frontCamera: Bool = false
override func viewDidLoad() {
super.viewDidLoad()
session.sessionPreset = AVCaptureSessionPresetPhoto
frontCamera(frontCamera)
if camera != nil{
beginSession()
}
initializeCaptureSession()
shoot.setImage(UIImage(named: "Shoot.png"), for: UIControlState.normal)
// Do any additional setup after loading the view, typically from a nib.
}
func beginSession(){
cameraPreviewLayer = AVCaptureVideoPreviewLayer(session: session)
self.cameraView.layer.addSublayer(cameraPreviewLayer!)
cameraPreviewLayer?.frame = self.cameraView.layer.bounds
cameraPreviewLayer?.videoGravity = AVLayerVideoGravityResizeAspectFill
session.startRunning()
stillImageOutput.outputSettings = [AVVideoCodecKey : AVVideoCodecJPEG]
if session.canAddOutput(stillImageOutput){
session.addOutput(stillImageOutput)
}
}
func frontCamera(_ front: Bool){
let devices = AVCaptureDevice.devices()
do{
try session.removeInput(AVCaptureDeviceInput(device: camera))
} catch {
print("error")
}
for device in devices!{
if((device as AnyObject).hasMediaType(AVMediaTypeVideo)) {
if front{
if (device as AnyObject).position == AVCaptureDevicePosition.front {
camera = device as? AVCaptureDevice
do{
try session.addInput(AVCaptureDeviceInput(device: camera))
} catch {
}
break
}
} else {
}
}
}
}
func displayCapturedPhoto(capturedPhoto : UIImage) {
let imagePreviewViewController = storyboard?.instantiateViewController(withIdentifier: "ImagePreviewViewController") as! ImagePreviewViewController
imagePreviewViewController.capturedImage = capturedPhoto
navigationController?.pushViewController(imagePreviewViewController, animated: true)
}
@IBOutlet weak var shoot: UIButton!
@IBAction func takePicture(_ sender: Any) {
takePicture()
}
func initializeCaptureSession() {
session.sessionPreset = AVCaptureSessionPresetHigh
camera = AVCaptureDevice.defaultDevice(withMediaType: AVMediaTypeVideo)
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 = AVLayerVideoGravityResizeAspectFill
cameraPreviewLayer?.frame = view.bounds
cameraPreviewLayer?.connection.videoOrientation = AVCaptureVideoOrientation.portrait
view.layer.insertSublayer(cameraPreviewLayer!, at: 0)
session.startRunning()
}
func takePicture() {
let settings = AVCapturePhotoSettings()
settings.flashMode = .off
cameraCaptureOutput?.capturePhoto(with: settings, delegate: self as AVCapturePhotoCaptureDelegate)
}
@IBOutlet weak var flash: UIButton!
@IBAction func flash(_ sender: Any) {
}
@IBAction func switchCamera(_ sender: Any) {
frontCamera = !frontCamera
session.beginConfiguration()
let inputs = session.inputs as! [AVCaptureInput]
for oldInput: AVCaptureInput in inputs{
session.removeInput(oldInput)
}
frontCamera(frontCamera)
session.commitConfiguration()
}
}
扩展 CameraViewController : AVCapturePhotoCaptureDelegate {
func capture(_ captureOutput: AVCapturePhotoOutput, didFinishProcessingPhotoSampleBuffer photoSampleBuffer: CMSampleBuffer?, 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) {
displayCapturedPhoto(capturedPhoto: finalImage)
}
}
}
}
override var prefersStatusBarHidden: Bool {
return true
}
}
【问题讨论】：
-
imageView的内容怎么设置？ -
“有什么解决办法吗？”有代码吗？
-
我添加了CameraViewController代码和ImagePreviewViewController。谢谢你们。