質問編集履歴
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コードの追加
test
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test
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@@ -14,11 +14,145 @@
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ViewController1にはカメラのプレビュー（AVCaptureVideoPreviewLayer）があり、ボタンが押されたと同時に、シャッターを切り、ViewController2に移動します。
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しかし、NavigationBarにある、Backボタンを押し、ViewController1に戻ると、カメラのプレビューの部分が画像になってしまい、アプリをシャットダウンしない限り、写真を取り直すことができません。
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ViewController
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ViewController1のカメラのプレビューを起動し、撮影するまでのコードはこのようになっています。
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```Swift
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override func viewDidLayoutSubviews() {
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//Set the frame of preview to make it same as cameraview
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previewLayer?.frame = cameraView.bounds
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}
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// Called befor the screen is loaded
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override func viewWillAppear(_ animated: Bool) {
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setPreview()
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}
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func setPreview() {
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// Initialize session and output
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session = AVCaptureSession()
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output = AVCapturePhotoOutput()
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// Resolution setting
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//session.sessionPreset = AVCaptureSessionPreset1920x1080
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session.sessionPreset = AVCaptureSession.Preset.hd1920x1080
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let camera = AVCaptureDevice.default(for: AVMediaType.video)
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do {
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// input camera to device
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let input = try AVCaptureDeviceInput(device: camera!)
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// Input
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if (session.canAddInput(input)) {
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session.addInput(input)
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// Output
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if (session.canAddOutput(output!)) {
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session.addOutput(output!)
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// Run camera
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session.startRunning()
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// Generate Preview
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previewLayer = AVCaptureVideoPreviewLayer(session: session)
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// Dont't change aspect ratio
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previewLayer?.videoGravity = AVLayerVideoGravity.resizeAspectFill
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// Add preview
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self.cameraView.layer.addSublayer(previewLayer!)
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}
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}
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} catch {
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print(error)
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}
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}
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@IBAction func ScanTapped(_ sender: Any) {
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// Camera setting
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let settingsForMonitoring = AVCapturePhotoSettings()
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settingsForMonitoring.flashMode = .off
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settingsForMonitoring.isHighResolutionPhotoEnabled = false =
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// Shoot
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output?.capturePhoto(with: settingsForMonitoring, delegate: self)
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}
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```
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クラス内の変数を全てnilにすると解決するかと思ったのですが、解決しませんでした。
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