@Override public void onConfigured(@NonNull CameraCaptureSession cameraCaptureSession) { // The camera is already closed if (null == mCameraDevice) { return; } // When the session is ready, we start displaying the preview. mCaptureSession = cameraCaptureSession; try { // Auto focus should be continuous for camera preview. mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AF_MODE, CaptureRequest.CONTROL_AF_MODE_CONTINUOUS_PICTURE); // Flash is automatically enabled when necessary. setAutoFlash(mPreviewRequestBuilder); // Finally, we start displaying the camera preview. mPreviewRequest = mPreviewRequestBuilder.build(); mCaptureSession.setRepeatingRequest(mPreviewRequest, mCaptureCallback, mBackgroundHandler); } catch (CameraAccessException e) { e.printStackTrace(); } }
private void setFlash(boolean flashing) { if (flashing != fFlashOn) { fFlashOn = flashing; try { if (torchId != null) { mCameraManager.setTorchMode(torchId, flashing); Log.d(TAG, "Set torchmode " + flashing); } } catch (CameraAccessException e) { if (e.getReason() != CameraAccessException.MAX_CAMERAS_IN_USE) { Log.e(TAG, "Failed to toggle flash!", e); } } } } }
public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.info_view); text = findViewById(R.id.text_info); text.setMovementMethod(new ScrollingMovementMethod()); try { cameraInfo(); } catch (CameraAccessException e) { text.setText(e.getLocalizedMessage()); } }
@SuppressLint("SwitchIntDef") @Override public String getErrorString(CameraAccessException e) { String errorMessage; switch (e.getReason()) { case CameraAccessException.CAMERA_DISABLED: errorMessage = getString(R.string.camera_disabled); break; case CameraAccessException.CAMERA_DISCONNECTED: errorMessage = getString(R.string.camera_disconnected); break; case CameraAccessException.CAMERA_ERROR: errorMessage = getString(R.string.camera_error); break; default: errorMessage = getString(R.string.camera_unknown, e.getReason()); break; } return errorMessage; }
/** * Lock the focus as the first step for a still image capture. */ private void lockFocus() { try { // This is how to tell the camera to lock focus. mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AF_TRIGGER, CameraMetadata.CONTROL_AF_TRIGGER_START); // Tell #mCaptureCallback to wait for the lock. mState = STATE_WAITING_LOCK; mCaptureSession.capture(mPreviewRequestBuilder.build(), mCaptureCallback, mBackgroundHandler); } catch (CameraAccessException e) { e.printStackTrace(); } }
/** * Run the precapture sequence for capturing a still image. This method should be called when * we get a response in {@link #mCaptureCallback} from {@link #lockFocus()}. */ private void runPrecaptureSequence() { try { // This is how to tell the camera to trigger. mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AE_PRECAPTURE_TRIGGER, CaptureRequest.CONTROL_AE_PRECAPTURE_TRIGGER_START); // Tell #mCaptureCallback to wait for the precapture sequence to be set. mState = STATE_WAITING_PRECAPTURE; mCaptureSession.capture(mPreviewRequestBuilder.build(), mCaptureCallback, mBackgroundHandler); } catch (CameraAccessException e) { e.printStackTrace(); } }
/** * Opens the camera specified by {@link Camera2BasicFragment#mCameraId}. */ private void openCamera(int width, int height) { if (ContextCompat.checkSelfPermission(getActivity(), Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) { requestCameraPermission(); return; } setUpCameraOutputs(width, height); configureTransform(width, height); Activity activity = getActivity(); CameraManager manager = (CameraManager) activity.getSystemService(Context.CAMERA_SERVICE); try { if (!mCameraOpenCloseLock.tryAcquire(2500, TimeUnit.MILLISECONDS)) { throw new RuntimeException("Time out waiting to lock camera opening."); } manager.openCamera(mCameraId, mStateCallback, mBackgroundHandler); } catch (CameraAccessException e) { e.printStackTrace(); } catch (InterruptedException e) { throw new RuntimeException("Interrupted while trying to lock camera opening.", e); } }
/** * Unlock the focus. This method should be called when still image capture sequence is * finished. */ private void unlockFocus() { try { // Reset the auto-focus trigger mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AF_TRIGGER, CameraMetadata.CONTROL_AF_TRIGGER_CANCEL); setAutoFlash(mPreviewRequestBuilder); mCaptureSession.capture(mPreviewRequestBuilder.build(), mCaptureCallback, mBackgroundHandler); // After this, the camera will go back to the normal state of preview. mState = STATE_PREVIEW; mCaptureSession.setRepeatingRequest(mPreviewRequest, mCaptureCallback, mBackgroundHandler); } catch (CameraAccessException e) { e.printStackTrace(); } }
); } catch (CameraAccessException e) { e.printStackTrace();
mCaptureSession.capture(captureBuilder.build(), CaptureCallback, null); } catch (CameraAccessException e) { e.printStackTrace();
e.printStackTrace(); } catch (NullPointerException e) {
@Override public void preview() { isUserWantPreview=true; try { createCameraCaptureSession(); } catch (CameraAccessException e) { e.printStackTrace(); } }
@Override public void open(int cameraId) { createThread(); if (ActivityCompat.checkSelfPermission(mContext, Manifest.permission.CAMERA) != PackageManager .PERMISSION_GRANTED) { } try { mCameraManager.openCamera(cameraId + "", mStateCallback, mCameraHandler); } catch (CameraAccessException e) { e.printStackTrace(); } }
/** * Update the camera preview. {@link #startPreview()} needs to be called in advance. */ private void updatePreview() { if (null == mCameraDevice) { return; } try { setUpCaptureRequestBuilder(mPreviewBuilder); HandlerThread thread = new HandlerThread("CameraPreview"); thread.start(); mPreviewSession.setRepeatingRequest(mPreviewBuilder.build(), null, mBackgroundHandler); } catch (CameraAccessException e) { e.printStackTrace(); } }
protected void updatePreview(CaptureRequest captureRequest, CameraCaptureSession.CaptureCallback captureSessionCaptureCallback) { try { if(mCaptureSession != null && mBackgroundHandler != null){ mCaptureSession.setRepeatingRequest(captureRequest, captureSessionCaptureCallback, mBackgroundHandler); } } catch (CameraAccessException e) { e.printStackTrace(); } }
@Override public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { try { cameraTextureView.changeFocusDistance(progress); } catch (CameraAccessException e) { e.printStackTrace(); } }
private void openCamera() { try { if (ActivityCompat.checkSelfPermission(this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) { // TODO: Consider calling // ActivityCompat#requestPermissions // here to request the missing permissions, and then overriding // public void onRequestPermissionsResult(int requestCode, String[] permissions, // int[] grantResults) // to handle the case where the user grants the permission. See the documentation // for ActivityCompat#requestPermissions for more details. return; } cameraManager.openCamera(cameraId, DeviceStateCallback, handler); } catch (CameraAccessException e) { e.printStackTrace(); } }
@Override public void onOpened(@NonNull CameraDevice camera) { mCameraDevice = camera; try { camera.createCaptureSession(Collections.singletonList(mMediaRecorder.getSurface()), cameraCaptureSessionStateCallback, mBackgroundHandler); } catch (CameraAccessException e) { e.printStackTrace(); } }