android.hardware.camera2.CameraAccessException#printStackTrace ( )源码实例Demo

/**
 * Lock the focus as the first step for a still image capture.
 */
private void lockFocus() {
    Log.d(TAG, "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.setRepeatingRequest(mPreviewRequestBuilder.build(), mCaptureCallback,
                mBackgroundHandler);
    } catch (CameraAccessException e) {
        Log.e(TAG, "CameraAccessException: " + e);
        e.printStackTrace();
    }
}
 

/**
 * 拍照
 */
@SuppressLint("NewApi")
private void takePicture() {
    if (mCameraDevice == null) return;
    // 创建拍照需要的CaptureRequest.Builder
    final CaptureRequest.Builder captureRequestBuilder;
    try {
        captureRequestBuilder = mCameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_STILL_CAPTURE);
        // 将imageReader的surface作为CaptureRequest.Builder的目标
        captureRequestBuilder.addTarget(mImageReader.getSurface());
        // 自动对焦
        captureRequestBuilder.set(CaptureRequest.CONTROL_AF_MODE, CaptureRequest.CONTROL_AF_MODE_CONTINUOUS_PICTURE);
        // 自动曝光
        captureRequestBuilder.set(CaptureRequest.CONTROL_AE_MODE, CaptureRequest.CONTROL_AE_MODE_ON_AUTO_FLASH);
        // 获取手机方向
        int rotation = getWindowManager().getDefaultDisplay().getRotation();
        // 根据设备方向计算设置照片的方向
        captureRequestBuilder.set(CaptureRequest.JPEG_ORIENTATION, ORIENTATIONS.get(rotation));
        //拍照
        CaptureRequest mCaptureRequest = captureRequestBuilder.build();
        mCameraCaptureSession.capture(mCaptureRequest, null, childHandler);
    } catch (CameraAccessException e) {
        e.printStackTrace();
    }
}
 

private String getCameraId() {
    try {
        String[] ids = mCameraManager.getCameraIdList();
        for (String id : ids) {
            CameraCharacteristics c = mCameraManager.getCameraCharacteristics(id);
            Boolean flashAvailable = c.get(CameraCharacteristics.FLASH_INFO_AVAILABLE);
            Integer facingDirection = c.get(CameraCharacteristics.LENS_FACING);
            if (flashAvailable != null
                    && flashAvailable
                    && facingDirection != null
                    && facingDirection == CameraCharacteristics.LENS_FACING_BACK) {
                return id;
            }
        }
    } catch (CameraAccessException e) {
        e.printStackTrace();
    }
    return null;
}
 

private String getCameraId() {
    try {
        String[] ids = mCameraManager.getCameraIdList();
        for (String id : ids) {
            CameraCharacteristics c = mCameraManager.getCameraCharacteristics(id);
            Boolean flashAvailable = c.get(CameraCharacteristics.FLASH_INFO_AVAILABLE);
            Integer facingDirection = c.get(CameraCharacteristics.LENS_FACING);
            if (flashAvailable != null
                    && flashAvailable
                    && facingDirection != null
                    && facingDirection == CameraCharacteristics.LENS_FACING_BACK) {
                return id;
            }
        }
    } catch (CameraAccessException e) {
        e.printStackTrace();
    }
    return null;
}
 

public void shotPhoto(){

        try {
            CaptureRequest.Builder captureRequestBuilder = mCameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_STILL_CAPTURE);
            captureRequestBuilder.addTarget(mImageReader.getSurface());
            // 自动对焦
            captureRequestBuilder.set(CaptureRequest.CONTROL_AF_MODE, CaptureRequest.CONTROL_AF_MODE_CONTINUOUS_PICTURE);
            // 自动曝光
            captureRequestBuilder.set(CaptureRequest.CONTROL_AE_MODE, CaptureRequest.CONTROL_AE_MODE_ON_AUTO_FLASH);
            captureRequestBuilder.set(CaptureRequest.JPEG_ORIENTATION, mOrientation);
            CaptureRequest captureRequest = captureRequestBuilder.build();
            mCameraCaptureSession.capture(captureRequest, null, mHandler);
        } catch (CameraAccessException e) {
            e.printStackTrace();
        }
    }
 

@Override
public void onConfigured(CameraCaptureSession session) {
    mCameraCaptureSession = session;
    try {
        // 自动对焦
        mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AF_MODE, CaptureRequest.CONTROL_AF_MODE_CONTINUOUS_PICTURE);
        // 自动闪光灯
        mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AE_MODE, CaptureRequest.CONTROL_AE_MODE_ON_AUTO_FLASH);
        CaptureRequest previewRequest = mPreviewRequestBuilder.build();
        session.setRepeatingRequest(previewRequest, null, mPreviewHandler);
    } catch (CameraAccessException e) {
        e.printStackTrace();
    }
}
 

private void startPreview() {
    if (mCameraDevice == null || !mCameraLayout.isAvailable() || mPreviewSize == null) {
        return;
    }
    try {
        setUpMediaRecorder();
        mCameraDevice.createCaptureSession(getSurfaces(), mSessionCallback, mBackgroundHandler);
    } catch (CameraAccessException cae) {
        cae.printStackTrace();
        mCamera2Listener.onCameraException(cae);
    } catch (IOException ioe) {
        ioe.printStackTrace();
        mCamera2Listener.onIOException(ioe);
    }
}
 

/**
 * 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();
    }
}
 

public void startPreview() {
    Log.v(TAG, "startPreview");
    if (mCaptureSession == null || mPreviewRequestBuilder == null) {
        Log.w(TAG, "startPreview: mCaptureSession or mPreviewRequestBuilder is null");
        return;
    }
    try {
        mCaptureSession.setRepeatingRequest(
                mPreviewRequest, mSessionCaptureCallback, mBackgroundHandler);
    } catch (CameraAccessException e) {
        e.printStackTrace();
    }
}
 

/************************************************************************************
* Capture a still picture. This method should be called when we get a response in
* {@link #mCaptureCallback} from both {@link #lockFocus()}.
************************************************************************************/
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private void captureStillPicture() {
    try {
        if (null == mActivity || null == mCameraDevice) {
            return;
        }
        // This is the CaptureRequest.Builder that we use to take a picture.
        final CaptureRequest.Builder captureBuilder =
                mCameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_STILL_CAPTURE);
        captureBuilder.addTarget(mImageReader.getSurface());

        // Use the same AE and AF modes as the preview.
        captureBuilder.set(CaptureRequest.CONTROL_AF_MODE,
                CaptureRequest.CONTROL_AF_MODE_CONTINUOUS_PICTURE);
        captureBuilder.set(CaptureRequest.CONTROL_AE_MODE,
                CaptureRequest.CONTROL_AE_MODE_ON_AUTO_FLASH);

        // Orientation
        int rotation = mActivity.getWindowManager().getDefaultDisplay().getRotation();
        captureBuilder.set(CaptureRequest.JPEG_ORIENTATION, ORIENTATIONS.get(rotation));

        CameraCaptureSession.CaptureCallback CaptureCallback
                = new CameraCaptureSession.CaptureCallback() {

            @Override
            public void onCaptureCompleted(CameraCaptureSession session, CaptureRequest request,
                                           TotalCaptureResult result) {
                showToast("Saved: " + mFile);
                unlockFocus();
            }
        };

        mCaptureSession.stopRepeating();
        mCaptureSession.capture(captureBuilder.build(), CaptureCallback, null);
    } catch (CameraAccessException e) {
        e.printStackTrace();
    }
}
 

private String getCamera(CameraManager manager) {
    try {
        for (String cameraId : manager.getCameraIdList()) {
            CameraCharacteristics characteristics = manager.getCameraCharacteristics(cameraId);
            int cameraOrientation = characteristics.get(CameraCharacteristics.LENS_FACING);
            if (cameraOrientation == CameraCharacteristics.LENS_FACING_BACK) {
                return cameraId;
            }
        }
    } catch (CameraAccessException e) {
        e.printStackTrace();
    }
    return null;
}
 

public void qq() {
    mPreviewRequestBuilder.set(CaptureRequest.CONTROL_EFFECT_MODE, CaptureResult.CONTROL_EFFECT_MODE_MONO);
    mPreviewRequest = mPreviewRequestBuilder.build();
    try {
        mCaptureSession.setRepeatingRequest(mPreviewRequest, mCaptureCallback, null);
    } catch (CameraAccessException e) {
        e.printStackTrace();
    }
}
 

@SuppressLint("NewApi")
@Override
public void setCaptureRequest(CaptureRequest.Builder requestBuilder, CameraCaptureSession cameraCaptureSession, Handler handler) {
    requestBuilder.set(CaptureRequest.CONTROL_AE_MODE, CaptureRequest.CONTROL_AE_MODE_ON_AUTO_FLASH);
    requestBuilder.set(CaptureRequest.FLASH_MODE, CaptureRequest.FLASH_MODE_OFF);

    try {
        cameraCaptureSession.setRepeatingRequest(requestBuilder.build(),null,handler);
    } catch (CameraAccessException e) {
        e.printStackTrace();
    }
}
 

@Override
public synchronized void cycleCamera() {
    try {
        String[] camLst = cameraManager.getCameraIdList();
        swapCamera((cameraIndex + 1) % camLst.length);
    } catch (CameraAccessException e) {
        e.printStackTrace();
        throw new Camera2Exception(e.getMessage());
    }
}
 

public void startPreview() {
    Log.v(TAG, "startPreview");
    if (mCaptureSession == null || mPreviewRequestBuilder == null) {
        Log.w(TAG, "startPreview: mCaptureSession or mPreviewRequestBuilder is null");
        return;
    }
    try {
        // 开始预览，即一直发送预览的请求
        mCaptureSession.setRepeatingRequest(mPreviewRequest, null, 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();
    }
}
 

/**
 * Initiate a still image capture.
 * <p/>
 * This function sends a capture request that initiates a pre-capture sequence in our state
 * machine that waits for auto-focus to finish, ending in a "locked" state where the lens is no
 * longer moving, waits for auto-exposure to choose a good exposure value, and waits for
 * auto-white-balance to converge.
 */
private void takePicture() {
    synchronized (mCameraStateLock) {
        mPendingUserCaptures++;

        // If we already triggered a pre-capture sequence, or are in a state where we cannot
        // do this, return immediately.
        if (mState != STATE_PREVIEW) {
            return;
        }

        try {
            // Trigger an auto-focus run if camera is capable. If the camera is already focused,
            // this should do nothing.
            if (!mNoAFRun) {
                mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AF_TRIGGER,
                        CameraMetadata.CONTROL_AF_TRIGGER_START);
            }

            // If this is not a legacy device, we can also trigger an auto-exposure metering
            // run.
            if (!isLegacyLocked()) {
                // Tell the camera to lock focus.
                mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AE_PRECAPTURE_TRIGGER,
                        CameraMetadata.CONTROL_AE_PRECAPTURE_TRIGGER_START);
            }

            // Update state machine to wait for auto-focus, auto-exposure, and
            // auto-white-balance (aka. "3A") to converge.
            mState = STATE_WAITING_FOR_3A_CONVERGENCE;

            // Start a timer for the pre-capture sequence.
            startTimerLocked();

            // Set flash mode
            setFlashMode();
            // Replace the existing repeating request with one with updated 3A triggers.
            mCaptureSession.capture(mPreviewRequestBuilder.build(), mPreCaptureCallback,
                    mBackgroundHandler);
        } catch (CameraAccessException e) {
            e.printStackTrace();
        }
    }
}
 

/**
 * Capture a still picture. This method should be called when we get a response in
 * {@link #mCaptureCallback} from both {@link #lockFocus()}.
 */
private void captureStillPicture() {
    try {
        final Activity activity = getActivity();
        if (null == activity || null == mCameraDevice) {
            return;
        }
        // This is the CaptureRequest.Builder that we use to take a picture.
        final CaptureRequest.Builder captureBuilder =
                mCameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_STILL_CAPTURE);
        captureBuilder.addTarget(mImageReader.getSurface());

        // Use the same AE and AF modes as the preview.
        captureBuilder.set(CaptureRequest.CONTROL_AF_MODE,
                CaptureRequest.CONTROL_AF_MODE_CONTINUOUS_PICTURE);
        setAutoFlash(captureBuilder);

        // Orientation
        int rotation = activity.getWindowManager().getDefaultDisplay().getRotation();
        captureBuilder.set(CaptureRequest.JPEG_ORIENTATION, getOrientation(rotation));

        CameraCaptureSession.CaptureCallback CaptureCallback
                = new CameraCaptureSession.CaptureCallback() {

            @Override
            public void onCaptureCompleted(@NonNull CameraCaptureSession session,
                                           @NonNull CaptureRequest request,
                                           @NonNull TotalCaptureResult result) {
                showToast("Saved: " + mFile);
                Log.d(TAG, mFile.toString());
                unlockFocus();
            }
        };

        mCaptureSession.stopRepeating();
        mCaptureSession.abortCaptures();
        mCaptureSession.capture(captureBuilder.build(), CaptureCallback, null);
    } catch (CameraAccessException e) {
        e.printStackTrace();
    }
}
 

/**
     * Capture a still picture. This method should be called when we get a response in
     * {@link #mCaptureCallback} from both {@link #lockFocus()}.
     */
    private void captureStillPicture() {
        try {
            final Activity activity = getActivity();
            if (null == activity || null == mCameraDevice) {
                return;
            }
            Log.d(TAG, "captureStillPicture: ");
            // This is the CaptureRequest.Builder that we use to take a picture.
            final CaptureRequest.Builder captureBuilder =
                    mCameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_STILL_CAPTURE);
            captureBuilder.addTarget(mImageReader.getSurface());
            captureBuilder.set(CaptureRequest.EDGE_MODE, CaptureRequest.EDGE_MODE_HIGH_QUALITY);
            captureBuilder.set(CaptureRequest.COLOR_CORRECTION_MODE, CaptureRequest.COLOR_CORRECTION_MODE_HIGH_QUALITY);

            // Use the same AE and AF modes as the preview.
            captureBuilder.set(CaptureRequest.CONTROL_AF_MODE,
                    CaptureRequest.CONTROL_AF_MODE_CONTINUOUS_PICTURE);
            setAutoFlash(captureBuilder);

            // Orientation
            int rotation = activity.getWindowManager().getDefaultDisplay().getRotation();
            captureBuilder.set(CaptureRequest.JPEG_ORIENTATION, getOrientation(rotation));
            //Set the JPEG quality here like so
            captureBuilder.set(CaptureRequest.JPEG_QUALITY, (byte) 100);

            CameraCaptureSession.CaptureCallback CaptureCallback
                    = new CameraCaptureSession.CaptureCallback() {

                @Override
                public void onCaptureCompleted(@NonNull CameraCaptureSession session,
                                               @NonNull CaptureRequest request,
                                               @NonNull TotalCaptureResult result) {
                    showToast("Saved: " + mFile);
                    Log.d(TAG, mFile.toString());
                    refreshAndroidGallery(Uri.fromFile(mFile));
                    scanner.onBitmapSelect(Uri.fromFile(mFile));
//                    mFile = new File(Environment.getExternalStoragePublicDirectory(DIRECTORY_DCIM).getAbsolutePath() +
//                            File.separator + "insta_download" + File.separator + System.currentTimeMillis() + ".jpg");
                }
            };

            mCaptureSession.stopRepeating();
            mCaptureSession.capture(captureBuilder.build(), CaptureCallback, null);
        } catch (CameraAccessException e) {
            e.printStackTrace();
        }
    }
 

/**
 * start camera preview
 *
 * @param width
 * @param height
 */
@SuppressLint("MissingPermission")
final void startPreview(final int width, final int height) {
    Log.v(TAG, "startPreview:");

    try {

        if (cameraManager == null) return;
        for (String cameraId : cameraManager.getCameraIdList()) {
            CameraCharacteristics characteristics = cameraManager.getCameraCharacteristics(cameraId);

            if (characteristics.get(CameraCharacteristics.LENS_FACING) == null || characteristics.get(CameraCharacteristics.SENSOR_ORIENTATION) == null) {
                continue;
            }
            if (characteristics.get(CameraCharacteristics.LENS_FACING) == lensFacing.getFacing()) {
                sensorArraySize = characteristics.get(CameraCharacteristics.SENSOR_INFO_ACTIVE_ARRAY_SIZE);

                flashSupport = characteristics.get(CameraCharacteristics.FLASH_INFO_AVAILABLE);
                StreamConfigurationMap map = characteristics.get(CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP);

                if (width < 0 || height < 0) {
                    cameraSize = map.getOutputSizes(SurfaceTexture.class)[0];
                } else {
                    cameraSize = getClosestSupportedSize(Arrays.asList(map.getOutputSizes(SurfaceTexture.class)), width, height);
                }
                Log.v(TAG, "cameraSize =" + cameraSize);

                HandlerThread thread = new HandlerThread("OpenCamera");
                thread.start();
                Handler backgroundHandler = new Handler(thread.getLooper());

                cameraManager.openCamera(cameraId, cameraDeviceCallback, backgroundHandler);

                return;
            }
        }
    } catch (CameraAccessException e) {
        e.printStackTrace();
    }

}