问题出现的原因是Android 12（三星设备）中对相机权限的更改。为了解决这个问题，可以按照以下步骤进行操作：

1. 在AndroidManifest.xml文件中添加相机使用权限：

2. 在应用程序中请求相机权限：

private void requestCameraPermission() { if (ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) { ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.CAMERA}, CAMERA_PERMISSION_CODE); } }

3. 通过添加以下代码，在应用程序的后台中使用相机：

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) { final CameraManager cameraManager = (CameraManager) getSystemService(Context.CAMERA_SERVICE); try { CameraCharacteristics cameraCharacteristics = cameraManager.getCameraCharacteristics(cameraId); if (cameraCharacteristics.get(CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL) == CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY) { camera = Camera.open(cameraId); } else { imageReader = ImageReader.newInstance(imageDimension.getWidth(), imageDimension.getHeight(), ImageFormat.JPEG, 1); List outputSurface = new ArrayList<>(2); outputSurface.add(imageReader.getSurface()); outputSurface.add(new Surface(textureView.getSurfaceTexture())); final CaptureRequest.Builder captureBuilder = cameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_STILL_CAPTURE); captureBuilder.addTarget(imageReader.getSurface()); captureBuilder.set(CaptureRequest.CONTROL_MODE, CameraMetadata.CONTROL_MODE_AUTO); cameraDevice.createCaptureSession(outputSurface, new CameraCaptureSession.StateCallback() {

                @Override
                public void onConfigured(@NonNull CameraCaptureSession cameraCaptureSession) {

                    try {
                        cameraCaptureSession.capture(captureBuilder.build(), new CameraCaptureSession.CaptureCallback() {
                        }, mBackgroundHandler);
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }

                @Override
                public void onConfigureFailed(@NonNull CameraCaptureSession cameraCaptureSession) {

                }
            }, mBackgroundHandler);
        }
    } catch (Exception e) {
        e