我在跟随这个视频来制作一个自定义相机视图。
https://www.youtube.com/watch?v=w0O3ZGUS3pk然而由于iOS 10和swift 3的更改,许多事情不再相关了。
以下是我在将废弃的函数更改为新函数后得到的代码... 然而没有错误,但在UIView上也看不到预览。
import UIKit
import AVFoundation
class ViewController: UIViewController, AVCapturePhotoCaptureDelegate, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
@IBOutlet weak var cameraView: UIView!
var captureSession = AVCaptureSession();
var sessionOutput = AVCapturePhotoOutput();
var sessionOutputSetting = AVCapturePhotoSettings(format: [AVVideoCodecKey:AVVideoCodecJPEG]);
var previewLayer = AVCaptureVideoPreviewLayer();
override func viewWillAppear(_ animated: Bool) {
let deviceDiscoverySession = AVCaptureDeviceDiscoverySession(deviceTypes: [AVCaptureDeviceType.builtInDuoCamera, AVCaptureDeviceType.builtInTelephotoCamera,AVCaptureDeviceType.builtInWideAngleCamera], mediaType: AVMediaTypeVideo, position: AVCaptureDevicePosition.unspecified)
for device in (deviceDiscoverySession?.devices)! {
if(device.position == AVCaptureDevicePosition.front){
do{
let input = try AVCaptureDeviceInput(device: device)
if(captureSession.canAddInput(input)){
captureSession.addInput(input);
if(captureSession.canAddOutput(sessionOutput)){
captureSession.addOutput(sessionOutput);
previewLayer = AVCaptureVideoPreviewLayer(session: captureSession);
previewLayer.videoGravity = AVLayerVideoGravityResizeAspectFill;
previewLayer.connection.videoOrientation = AVCaptureVideoOrientation.portrait;
cameraView.layer.addSublayer(previewLayer);
}
}
}
catch{
print("exception!");
}
}
}
}
sessionOutputSetting
没有被使用...为什么? - StackUnderflow