问红米K60至尊版超广角镜头没法捕获图像？

mOnImageAvailableListener2

/*
 * Copyright 2017 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *d
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.myapplicationnew3;
import java.util.Date;
import android.hardware.camera2.CameraMetadata;

import android.content.Context;
import android.content.Intent;
import android.hardware.camera2.CameraAccessException;
import android.hardware.camera2.CameraCharacteristics;
import android.hardware.camera2.CameraManager;
import android.media.MediaScannerConnection;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.Manifest;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.pm.PackageManager;
import android.content.res.Configuration;
import android.graphics.ImageFormat;
import android.graphics.Matrix;
import android.graphics.Point;
import android.graphics.RectF;
import android.graphics.SurfaceTexture;
import android.hardware.camera2.CameraAccessException;
import android.hardware.camera2.CameraCaptureSession;
import android.hardware.camera2.CameraCharacteristics;
import android.hardware.camera2.CameraDevice;
import android.hardware.camera2.CameraManager;
import android.hardware.camera2.CameraMetadata;
import android.hardware.camera2.CaptureRequest;
import android.hardware.camera2.CaptureResult;
import android.hardware.camera2.TotalCaptureResult;
import android.hardware.camera2.params.OutputConfiguration;
import android.hardware.camera2.params.SessionConfiguration;
import android.hardware.camera2.params.StreamConfigurationMap;
import android.media.Image;
import android.media.ImageReader;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.os.HandlerThread;
import androidx.annotation.NonNull;
import android.os.Environment;



import androidx.annotation.RequiresApi;

import androidx.core.app.ActivityCompat;

import androidx.fragment.app.DialogFragment;

import androidx.fragment.app.Fragment;

import androidx.core.content.ContextCompat;

import android.util.Log;
import android.util.Size;
import android.util.SparseIntArray;
import android.view.LayoutInflater;
import android.view.Surface;
import android.view.TextureView;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;
import java.text.SimpleDateFormat;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.Locale;
import java.util.Set;
import java.util.concurrent.Semaphore;
import java.util.concurrent.TimeUnit;


@RequiresApi(api = Build.VERSION_CODES.P)
public class Camera2BasicFragment extends Fragment
        implements View.OnClickListener, ActivityCompat.OnRequestPermissionsResultCallback {
    public static final String TAG = "Camera2BasicFragment";
    int flag =0 ;
    private class DualCamera{
        String logicalId;
        String physicalId1;
        String physicalId2;

        public DualCamera(String s, String s1, String s2) {
            logicalId = s;
            physicalId1 = s1;
            physicalId2 = s2;
        }
    }
    /**
     * Conversion from screen rotation to JPEG orientation.
     */
    private static final SparseIntArray ORIENTATIONS = new SparseIntArray();
    private static final int REQUEST_CAMERA_PERMISSION = 1;
    private static final String FRAGMENT_DIALOG = "dialog";
    private int idx=0;
    static {
        ORIENTATIONS.append(Surface.ROTATION_0, 90);
        ORIENTATIONS.append(Surface.ROTATION_90, 0);
        ORIENTATIONS.append(Surface.ROTATION_180, 270);
        ORIENTATIONS.append(Surface.ROTATION_270, 180);
    }

    /**
     * Tag for the {@link Log}.
     */

    /**
     * Camera state: Showing camera preview.
     */
    private static final int STATE_PREVIEW = 0;

    /**
     * Camera state: Waiting for the focus to be locked.
     */
    private static final int STATE_WAITING_LOCK = 1;

    /**
     * Camera state: Waiting for the exposure to be precapture state.
     */
    private static final int STATE_WAITING_PRECAPTURE = 2;

    /**
     * Camera state: Waiting for the exposure state to be something other than precapture.
     */
    private static final int STATE_WAITING_NON_PRECAPTURE = 3;

    /**
     * Camera state: Picture was taken.
     */
    private static final int STATE_PICTURE_TAKEN = 4;

    /**
     * Max preview width that is guaranteed by Camera2 API
     */
    private static final int MAX_PREVIEW_WIDTH = 1920;

    /**
     * Max preview height that is guaranteed by Camera2 API
     */
    private static final int MAX_PREVIEW_HEIGHT = 1080;

    /**
     * {@link TextureView.SurfaceTextureListener} handles several lifecycle events on a
     * {@link TextureView}.
     */
    private final TextureView.SurfaceTextureListener mSurfaceTextureListener
            = new TextureView.SurfaceTextureListener() {

        @Override
        public void onSurfaceTextureAvailable(SurfaceTexture texture, int width, int height) {
            openCamera(width, height);
        }

        @Override
        public void onSurfaceTextureSizeChanged(SurfaceTexture texture, int width, int height) {
            configureTransform(width, height);
        }

        @Override
        public boolean onSurfaceTextureDestroyed(SurfaceTexture texture) {
            return true;
        }

        @Override
        public void onSurfaceTextureUpdated(SurfaceTexture texture) {
        }

    };


    /**
     * ID of the current {@link CameraDevice}.
     */
    private String mCameraId;

    /**
     * An {@link AutoFitTextureView} for camera preview.
     */
    private AutoFitTextureView mTextureView;
    private AutoFitTextureView mTextureView2;

    /**
     * A {@link CameraCaptureSession } for camera preview.
     */
    private CameraCaptureSession mCaptureSession;

    /**
     * A reference to the opened {@link CameraDevice}.
     */
    private CameraDevice mCameraDevice;

    /**
     * The {@link Size} of camera preview.
     */
    private Size mPreviewSize;

    /**
     * {@link CameraDevice.StateCallback} is called when {@link CameraDevice} changes its state.
     */
    private final CameraDevice.StateCallback mStateCallback = new CameraDevice.StateCallback() {


        @Override
        public void onOpened(@NonNull CameraDevice cameraDevice) {
            // This method is called when the camera is opened.  We start camera preview here.
            Log.d(TAG, "startaaa");
            mCameraOpenCloseLock.release();
            mCameraDevice = cameraDevice;
            createCameraPreviewSession();
        }

        @Override
        public void onDisconnected(@NonNull CameraDevice cameraDevice) {
            mCameraOpenCloseLock.release();
            cameraDevice.close();
            mCameraDevice = null;
        }

        @Override
        public void onError(@NonNull CameraDevice cameraDevice, int error) {
            mCameraOpenCloseLock.release();
            cameraDevice.close();
            mCameraDevice = null;
            Activity activity = getActivity();
            if (null != activity) {
                activity.finish();
            }
        }

    };

    /**
     * An additional thread for running tasks that shouldn't block the UI.
     */
    private HandlerThread mBackgroundThread;

    private HandlerThread mBackgroundThread1;

    /**
     * A {@link Handler} for running tasks in the background.
     */
    private Handler mBackgroundHandler;
    private Handler mBackgroundHandler1;

    /**
     * An {@link ImageReader} that handles still image capture. two for both cameras
     */
    private ImageReader mImageReader1;
    private ImageReader mImageReader2;

    /**
     * This is the output file for our picture.
     */
    private File mFile1;
    private File mFile2;
    int idx1=0;
    int idx2=0;

    /**
     * This a callback object for the {@link ImageReader}. "onImageAvailable" will be called when a
     * still image is ready to be saved.
     */
    //begin
// 修改 mOnImageAvailableListener1 的部分
    private final ImageReader.OnImageAvailableListener mOnImageAvailableListener1
            = new ImageReader.OnImageAvailableListener() {

        @Override
        public void onImageAvailable(ImageReader reader) {
            Log.d(TAG, "onImageAvailable for mImageReader1");
            idx1 += 1;
            String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.getDefault()).format(new Date());
            mFile1 = new File(Environment.getExternalStoragePublicDirectory(
                    Environment.DIRECTORY_DCIM), "R" + String.valueOf(idx1) + timeStamp + ".jpg");
            Image image = reader.acquireNextImage();
            mBackgroundHandler.post(new ImageSaver(image, mFile1));

            // 通知系统将图像添加到相册
            galleryAddPic(mFile1.getAbsolutePath());
//            image.close();
        }
    };

    // 修改 mOnImageAvailableListener2 的部分
    private final ImageReader.OnImageAvailableListener mOnImageAvailableListener2
            = new ImageReader.OnImageAvailableListener() {

        @Override
        public void onImageAvailable(ImageReader reader) {
            Log.d(TAG, "onImageAvailable for mImageReader2");
            idx2 += 1;
            String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.getDefault()).format(new Date());
            mFile2 = new File(Environment.getExternalStoragePublicDirectory(
                    Environment.DIRECTORY_DCIM), "L" + String.valueOf(idx2) + timeStamp + ".jpg");

            // 进行保存图像的逻辑
            mBackgroundHandler.post(new ImageSaver(reader.acquireNextImage(), mFile2));

            // 通知系统将图像添加到相册
            galleryAddPic(mFile2.getAbsolutePath());
            Log.d(TAG, "Image from mImageReader2 saved to " + mFile2.getAbsolutePath());

        }
    };



    // 添加一个方法通知系统将图像添加到相册
    private void galleryAddPic(String imagePath) {
        Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
        File f = new File(imagePath);
        Uri contentUri = Uri.fromFile(f);
        mediaScanIntent.setData(contentUri);
        getActivity().sendBroadcast(mediaScanIntent);
        Log.d(TAG,"savesucaff");
    }

    //end

    /**
     * {@link CaptureRequest.Builder} for the camera preview
     */
    private CaptureRequest.Builder mPreviewRequestBuilder;

    /**
     * {@link CaptureRequest} generated by {@link #mPreviewRequestBuilder}
     */
    private CaptureRequest mPreviewRequest;

    /**
     * The current state of camera state for taking pictures.
     *
     * @see #mCaptureCallback
     */
    private int mState = STATE_PREVIEW;

    /**
     * A {@link Semaphore} to prevent the app from exiting before closing the camera.
     */
    private Semaphore mCameraOpenCloseLock = new Semaphore(1);

    /**
     * Whether the current camera device supports Flash or not.
     */
    private boolean mFlashSupported;

    /**
     * Orientation of the camera sensor
     */
    private int mSensorOrientation;

    /**
     * A {@link CameraCaptureSession.CaptureCallback} that handles events related to JPEG capture.
     */
    private CameraCaptureSession.CaptureCallback mCaptureCallback
            = new CameraCaptureSession.CaptureCallback() {
        private void process(CaptureResult result) {
            switch (mState) {
                case STATE_PREVIEW: {
                    // We have nothing to do when the camera preview is working normally.
                    break;
                }
                case STATE_WAITING_LOCK: {
                    Integer afState = result.get(CaptureResult.CONTROL_AF_STATE);
                    if (afState == null) {
                        captureStillPicture();

                    } else if (CaptureResult.CONTROL_AF_STATE_FOCUSED_LOCKED == afState ||
                            CaptureResult.CONTROL_AF_STATE_NOT_FOCUSED_LOCKED == afState) {
                        // CONTROL_AE_STATE can be null on some devices
                        Integer aeState = result.get(CaptureResult.CONTROL_AE_STATE);
                        if (aeState == null ||
                                aeState == CaptureResult.CONTROL_AE_STATE_CONVERGED) {
                            mState = STATE_PICTURE_TAKEN;
                            captureStillPicture();
                        } else {
                            runPrecaptureSequence();
                        }
                    }
                    break;
                }
                case STATE_WAITING_PRECAPTURE: {
                    // CONTROL_AE_STATE can be null on some devices
                    Integer aeState = result.get(CaptureResult.CONTROL_AE_STATE);
                    if (aeState == null ||
                            aeState == CaptureResult.CONTROL_AE_STATE_PRECAPTURE ||
                            aeState == CaptureRequest.CONTROL_AE_STATE_FLASH_REQUIRED) {
                        mState = STATE_WAITING_NON_PRECAPTURE;
                    }
                    break;
                }
                case STATE_WAITING_NON_PRECAPTURE: {
                    // CONTROL_AE_STATE can be null on some devices
                    Integer aeState = result.get(CaptureResult.CONTROL_AE_STATE);
                    if (aeState == null || aeState != CaptureResult.CONTROL_AE_STATE_PRECAPTURE) {
                        mState = STATE_PICTURE_TAKEN;
                        captureStillPicture();
                    }
                    break;
                }
            }
        }

        @Override
        public void onCaptureProgressed(@NonNull CameraCaptureSession session,
                                        @NonNull CaptureRequest request,
                                        @NonNull CaptureResult partialResult) {
//            Log.d("cjc","partial");
            process(partialResult);
        }

        @Override
        public void onCaptureCompleted(@NonNull CameraCaptureSession session,
                                       @NonNull CaptureRequest request,
                                       @NonNull TotalCaptureResult result) {
//            Log.d("cjc","complete");
            process(result);
        }

    };

    /**
     * Shows a {@link Toast} on the UI thread.
     *
     * @param text The message to show
     */
    private void showToast(final String text) {
        final Activity activity = getActivity();
        if (activity != null) {
            activity.runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    Toast.makeText(activity, text, Toast.LENGTH_SHORT).show();
                }
            });
        }
    }

    /**
     * Given {@code choices} of {@code Size}s supported by a camera, choose the smallest one that
     * is at least as large as the respective texture view size, and that is at most as large as the
     * respective max size, and whose aspect ratio matches with the specified value. If such size
     * doesn't exist, choose the largest one that is at most as large as the respective max size,
     * and whose aspect ratio matches with the specified value.
     *
     * @param choices           The list of sizes that the camera supports for the intended output
     *                          class
     * @param textureViewWidth  The width of the texture view relative to sensor coordinate
     * @param textureViewHeight The height of the texture view relative to sensor coordinate
     * @param maxWidth          The maximum width that can be chosen
     * @param maxHeight         The maximum height that can be chosen
     * @param aspectRatio       The aspect ratio
     * @return The optimal {@code Size}, or an arbitrary one if none were big enough
     */
    private static Size chooseOptimalSize(Size[] choices, int textureViewWidth,
                                          int textureViewHeight, int maxWidth, int maxHeight, Size aspectRatio) {

        // Collect the supported resolutions that are at least as big as the preview Surface
        List<Size> bigEnough = new ArrayList<>();
        // Collect the supported resolutions that are smaller than the preview Surface
        List<Size> notBigEnough = new ArrayList<>();
        int w = aspectRatio.getWidth();
        int h = aspectRatio.getHeight();
        for (Size option : choices) {
            if (option.getWidth() <= maxWidth && option.getHeight() <= maxHeight &&
                    option.getHeight() == option.getWidth() * h / w) {
                if (option.getWidth() >= textureViewWidth &&
                        option.getHeight() >= textureViewHeight) {
                    bigEnough.add(option);
                } else {
                    notBigEnough.add(option);
                }
            }
        }

        // Pick the smallest of those big enough. If there is no one big enough, pick the
        // largest of those not big enough.
        if (bigEnough.size() > 0) {
            return Collections.min(bigEnough, new CompareSizesByArea());
        } else if (notBigEnough.size() > 0) {
            return Collections.max(notBigEnough, new CompareSizesByArea());
        } else {
            Log.e(TAG, "Couldn't find any suitable preview size");
            return choices[0];
        }
    }

    public static Camera2BasicFragment newInstance() {
        return new Camera2BasicFragment();
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment_camera2_basic, container, false);
    }

    @Override
    public void onViewCreated(final View view, Bundle savedInstanceState) {
        view.findViewById(R.id.picture).setOnClickListener(this);
        view.findViewById(R.id.info).setOnClickListener(this);
        //used for preview surface
        mTextureView = (AutoFitTextureView) view.findViewById(R.id.texture);
        mTextureView2 = (AutoFitTextureView) view.findViewById(R.id.texture2);
    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);

    }

    @Override
    public void onResume() {
        super.onResume();
        startBackgroundThread();

        // When the screen is turned off and turned back on, the SurfaceTexture is already
        // available, and "onSurfaceTextureAvailable" will not be called. In that case, we can open
        // a camera and start preview from here (otherwise, we wait until the surface is ready in
        // the SurfaceTextureListener).
        if (mTextureView2.isAvailable()) {
            openCamera(mTextureView.getWidth(), mTextureView.getHeight());
        } else {
            mTextureView2.setSurfaceTextureListener(mSurfaceTextureListener);
        }

    }

    @Override
    public void onPause() {
        closeCamera();
        stopBackgroundThread();
        super.onPause();
    }

    private void requestCameraPermission() {
        if (shouldShowRequestPermissionRationale(Manifest.permission.CAMERA)) {
            new ConfirmationDialog().show(getChildFragmentManager(), FRAGMENT_DIALOG);
        } else {
            requestPermissions(new String[]{Manifest.permission.CAMERA}, REQUEST_CAMERA_PERMISSION);
        }
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
                                           @NonNull int[] grantResults) {
        if (requestCode == REQUEST_CAMERA_PERMISSION) {
            if (grantResults.length != 1 || grantResults[0] != PackageManager.PERMISSION_GRANTED) {
                ErrorDialog.newInstance(getString(R.string.request_permission))
                        .show(getChildFragmentManager(), FRAGMENT_DIALOG);
            }
        } else {
            super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        }
    }

    /**
     * Sets up member variables related to camera.
     *
     * @param width  The width of available size for camera preview
     * @param height The height of available size for camera preview


    /**
     * Sets up member variables related to camera.
     *
     * @param width  The width of available size for camera preview
     * @param height The height of available size for camera preview
     */
    float a = 0;
    float a2 = 0;


    //逻辑相机ID（厂商分配）
    private String logicCameraId;

    //相机物理id 1
    private String physicsCameraId1;

    //相机物理id 2
    private String physicsCameraId2;

    private String physicsCameraId3;

    @SuppressWarnings("SuspiciousNameCombination")
    private void setUpCameraOutputs(int width, int height) {
        Activity activity = getActivity();
        CameraManager manager = (CameraManager) activity.getSystemService(Context.CAMERA_SERVICE);
        CameraManager cameraManager = (CameraManager) activity.getSystemService(Context.CAMERA_SERVICE);
        try {
            List<String> useCameraList = new ArrayList<>();
            String[] cameraIdList = cameraManager.getCameraIdList();
            for (String cameraId : cameraIdList) {
                CameraCharacteristics characteristics = cameraManager.getCameraCharacteristics(cameraId);

                Integer physicalCameraId = characteristics.get(CameraCharacteristics.LENS_FACING);
                if (physicalCameraId != null && (physicalCameraId == CameraCharacteristics.LENS_FACING_BACK || physicalCameraId == CameraCharacteristics.LENS_FACING_FRONT)) {
                    String logicalCameraId = cameraId;
                    Log.d("Logical Camera ID", logicalCameraId);
                    useCameraList.add(logicalCameraId);

                    boolean isFrontCamera = (physicalCameraId == CameraCharacteristics.LENS_FACING_FRONT);
                    if (isFrontCamera) {
                        Log.d("Camera Type", "Front camera");
                    } else {
                        Log.d("Camera Type", "Back camera");
                    }

                    Set<String> physicalCameraIdSet = characteristics.getPhysicalCameraIds();
                    if (physicalCameraIdSet != null) {
                        for (String individualPhysicalCameraId : physicalCameraIdSet) {
                            Log.d("Physical Camera ID", individualPhysicalCameraId);
                            useCameraList.add(individualPhysicalCameraId);

                            CameraCharacteristics physicalCharacteristics = cameraManager.getCameraCharacteristics(individualPhysicalCameraId);
                            StreamConfigurationMap configurationMap = physicalCharacteristics.get(CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP);
                            if (configurationMap != null) {
                                int[] outputFormats = configurationMap.getOutputFormats();
                                if (outputFormats != null && outputFormats.length > 0) {
                                    Log.d("Physical Camera", individualPhysicalCameraId + " supports the following output formats:");
                                    for (int format : outputFormats) {
                                        Log.d("Output Format", String.valueOf(format));
                                    }
                                } else {
                                    Log.d("Physical Camera", individualPhysicalCameraId + " does not support any output formats");
                                }
                            }

                            // 判断物理相机是否是超广角摄像头
                            int[] distortionCorrectionModes = physicalCharacteristics.get(CameraCharacteristics.DISTORTION_CORRECTION_AVAILABLE_MODES);
                            if (distortionCorrectionModes != null && Arrays.asList(distortionCorrectionModes).contains(CameraCharacteristics.DISTORTION_CORRECTION_MODE_HIGH_QUALITY)) {
                                Log.d("Physical Camera", individualPhysicalCameraId + " is a wide-angle camera");
                            }
                        }
                    }
                }
            }





            String[] cameraIds = cameraManager.getCameraIdList();
            for (String cameraId : cameraIds) {
                CameraCharacteristics characteristics = cameraManager.getCameraCharacteristics(cameraId);

                // 检查相机的硬件级别
                Integer hardwareLevel = characteristics.get(CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL);

                if (hardwareLevel != null && (hardwareLevel == CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL_FULL ||
                        hardwareLevel == CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED)) {
                    // 相机支持多摄像头会话
                    Log.d(TAG, "Camera ID: " + cameraId + " supports multi-camera session");
                } else {
                    // 相机不支持多摄像头会话
                    Log.d(TAG, "Camera ID: " + cameraId + " does not support multi-camera session"  + hardwareLevel);
                    Log.d(TAG, "a"+CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL_FULL);
                    Log.d(TAG, "b"+CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED);
                }
            }



            Log.d(TAG, "asdfasdfasdfadf:"+useCameraList);
            logicCameraId = useCameraList.get(0);
            physicsCameraId1= useCameraList.get(1);
            physicsCameraId2= useCameraList.get(2);
//            physicsCameraId3= useCameraList.get(3);

            //logical
            String cameraId = "1";
            CameraCharacteristics characteristics0
                    = manager.getCameraCharacteristics("1");
            StreamConfigurationMap map0 = characteristics0.get(
                    CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP);
            //physical
            CameraCharacteristics characteristics1
                    = manager.getCameraCharacteristics(physicsCameraId1);

            StreamConfigurationMap map1 = characteristics1.get(
                    CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP);
            if (map1 == null) {
                Log.d("cjc", "NULL map SCALER_STREAM_CONFIGURATION_MAP2");
            }
            assert map1 != null;

            CameraCharacteristics characteristics2
                    = manager.getCameraCharacteristics(physicsCameraId2);

            StreamConfigurationMap map2 = characteristics2.get(
                    CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP);
            if (map2 == null) {
                Log.d("cjc", "NULL map SCALER_STREAM_CONFIGURATION_MAP3");
            }
            assert map2 != null;

            // For still image captures, we use the largest available size.
            Size largest0 = Collections.max(
                    Arrays.asList(map0.getOutputSizes(ImageFormat.JPEG)),
                    new CompareSizesByArea());
            Size largest1 = Collections.max(
                    Arrays.asList(map1.getOutputSizes(ImageFormat.JPEG)),
                    new CompareSizesByArea());
            Size largest2 = Collections.max(
                    Arrays.asList(map2.getOutputSizes(ImageFormat.JPEG)),
                    new CompareSizesByArea());


//            a = characteristics1.get(CameraCharacteristics.LENS_INFO_MINIMUM_FOCUS_DISTANCE);
//            a2 = characteristics2.get(CameraCharacteristics.LENS_INFO_MINIMUM_FOCUS_DISTANCE);
            // Find out if we need to swap dimension to get the preview size relative to sensor
            // coordinate.
            int displayRotation = activity.getWindowManager().getDefaultDisplay().getRotation();
            //noinspection ConstantConditions
            mSensorOrientation = characteristics0.get(CameraCharacteristics.SENSOR_ORIENTATION);
            boolean swappedDimensions = false;
            switch (displayRotation) {
                case Surface.ROTATION_0:
                case Surface.ROTATION_180:
                    if (mSensorOrientation == 90 || mSensorOrientation == 270) {
                        swappedDimensions = true;
                    }
                    break;
                case Surface.ROTATION_90:
                case Surface.ROTATION_270:
                    if (mSensorOrientation == 0 || mSensorOrientation == 180) {
                        swappedDimensions = true;
                    }
                    break;
                default:
                    Log.e(TAG, "Display rotation is invalid: " + displayRotation);
            }

            Point displaySize = new Point();
            activity.getWindowManager().getDefaultDisplay().getSize(displaySize);
            int rotatedPreviewWidth = width;
            int rotatedPreviewHeight = height;
            int maxPreviewWidth = displaySize.x;
            int maxPreviewHeight = displaySize.y;

            if (swappedDimensions) {
                rotatedPreviewWidth = height;
                rotatedPreviewHeight = width;
                maxPreviewWidth = displaySize.y;
                maxPreviewHeight = displaySize.x;
            }

            if (maxPreviewWidth > MAX_PREVIEW_WIDTH) {
                maxPreviewWidth = MAX_PREVIEW_WIDTH;
            }

            if (maxPreviewHeight > MAX_PREVIEW_HEIGHT) {
                maxPreviewHeight = MAX_PREVIEW_HEIGHT;
            }

            // Danger, W.R.! Attempting to use too large a preview size could  exceed the camera
            // bus' bandwidth limitation, resulting in gorgeous previews but the storage of
            // garbage capture data.
            mPreviewSize = chooseOptimalSize(map0.getOutputSizes(SurfaceTexture.class),
                    rotatedPreviewWidth, rotatedPreviewHeight, maxPreviewWidth,
                    maxPreviewHeight, largest0);
            //必须两个预览一起，只调3会bug，只调2没问题
            // We fit the aspect ratio of TextureView to the size of preview we picked.
            int orientation = getResources().getConfiguration().orientation;
            if (orientation == Configuration.ORIENTATION_LANDSCAPE) {
                mTextureView.setAspectRatio(
                        mPreviewSize.getWidth(), mPreviewSize.getHeight());
                mTextureView2.setAspectRatio(
                        mPreviewSize.getWidth(), mPreviewSize.getHeight());

            } else {
                mTextureView.setAspectRatio(
                        mPreviewSize.getHeight(), mPreviewSize.getWidth());
                mTextureView2.setAspectRatio(
                        mPreviewSize.getHeight(), mPreviewSize.getWidth());
            }

            // Check if the flash is supported.
            Boolean available = characteristics0.get(CameraCharacteristics.FLASH_INFO_AVAILABLE);
            mFlashSupported = available == null ? false : available;
            mImageReader1 = ImageReader.newInstance(largest1.getWidth(), largest1.getHeight(),
                    ImageFormat.JPEG, /*maxImages*/6);
            mImageReader2 = ImageReader.newInstance(largest2.getWidth(), largest2.getHeight(),
                    ImageFormat.JPEG, /*maxImages*/12);
            mImageReader1.setOnImageAvailableListener(
                    mOnImageAvailableListener1, mBackgroundHandler);
            mImageReader2.setOnImageAvailableListener(
                    mOnImageAvailableListener2, mBackgroundHandler);

//            Log.d(TAG,"asdfasdf!!!");
//            DualCamera dualCamera = new DualCamera("1","2","3");
            mCameraId = logicCameraId;
            return;
        } catch (NullPointerException e) {
            // Currently an NPE is thrown when the Camera2API is used but not supported on the
            // device this code runs.
            ErrorDialog.newInstance(getString(R.string.camera_error))
                    .show(getChildFragmentManager(), FRAGMENT_DIALOG);
        } 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);//done
        //configureTransform(width, height);
        Activity activity = getActivity();
        CameraManager manager = (CameraManager) activity.getSystemService(Context.CAMERA_SERVICE);
        try {
            if (mCameraDevice != null) {return;}
            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);
        }
    }

    /**
     * Closes the current {@link CameraDevice}.
     */
    private void closeCamera() {
        try {
            mCameraOpenCloseLock.acquire();
            if (null != mCaptureSession) {
                mCaptureSession.close();
                mCaptureSession = null;
            }
            if (null != mCameraDevice) {
                mCameraDevice.close();
                mCameraDevice = null;
            }
            if (null != mImageReader1) {
                mImageReader1.close();
                mImageReader1 = null;
            }
            if (null != mImageReader2) {
                mImageReader2.close();
                mImageReader2 = null;
            }
        } catch (InterruptedException e) {
            throw new RuntimeException("Interrupted while trying to lock camera closing.", e);
        } finally {
            mCameraOpenCloseLock.release();
        }
    }

    /**
    /**
     * Starts a background thread and its {@link Handler}.
     */
    private void startBackgroundThread() {
        mBackgroundThread = new HandlerThread("CameraBackground");
        mBackgroundThread.start();
        mBackgroundHandler = new Handler(mBackgroundThread.getLooper());

    }

    /**
     * Stops the background thread and its {@link Handler}.
     */
    private void stopBackgroundThread() {
        mBackgroundThread.quitSafely();
        try {
            mBackgroundThread.join();
            mBackgroundThread = null;
            mBackgroundHandler = null;
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

    }

    /**
     * Creates a new {@link CameraCaptureSession} for camera preview.
     */
    @RequiresApi(api = Build.VERSION_CODES.P)
    private void createCameraPreviewSession() {
        try {
            CameraManager cameraManager = (CameraManager) getActivity().getSystemService(Context.CAMERA_SERVICE);


            String[] cameraIds = cameraManager.getCameraIdList();
            for (String cameraId : cameraIds) {
                CameraCharacteristics characteristics = cameraManager.getCameraCharacteristics(cameraId);

                // 检查相机的硬件级别
                Integer hardwareLevel = characteristics.get(CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL);

                if (hardwareLevel != null && (hardwareLevel == CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL_FULL ||
                        hardwareLevel == CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED)) {
                    // 相机支持多摄像头会话
                    Log.d(TAG, "Camera ID: " + cameraId + " supports multi-camera session");
                } else {
                    // 相机不支持多摄像头会话
                    Log.d(TAG, "Camera ID: " + cameraId + " does not support multi-camera session");
                }
            }

            SurfaceTexture texture = mTextureView.getSurfaceTexture();
            SurfaceTexture texture2 = mTextureView2.getSurfaceTexture();
            assert texture != null;
            assert texture2 != null;
            // We configure the size of default buffer to be the size of camera preview we want.
            texture.setDefaultBufferSize(mPreviewSize.getWidth(), mPreviewSize.getHeight());
            texture2.setDefaultBufferSize(mPreviewSize.getWidth(), mPreviewSize.getHeight());

            // This is the output Surface we need to start preview.
            Surface surface = new Surface(texture);
            Surface surface2 = new Surface(texture2);

            // We set up a CaptureRequest.Builder with the output Surface.
            mPreviewRequestBuilder
                    = mCameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_PREVIEW);
            mPreviewRequestBuilder.addTarget(surface);
            mPreviewRequestBuilder.addTarget(surface2);


            OutputConfiguration opc1 = new OutputConfiguration(surface);
            opc1.setPhysicalCameraId(physicsCameraId1);
            OutputConfiguration opc2 = new OutputConfiguration(surface2);
            opc2.setPhysicalCameraId(physicsCameraId2);
            OutputConfiguration opc3 = new OutputConfiguration(mImageReader1.getSurface());
            opc3.setPhysicalCameraId(physicsCameraId1);
            OutputConfiguration opc4 = new OutputConfiguration(mImageReader2.getSurface());
            opc4.setPhysicalCameraId(physicsCameraId2);

            List<OutputConfiguration> outputConfigsAll = Arrays.asList(opc1,opc2,opc3,opc4);
            // Here, we create a CameraCaptureSession for camera preview.
            SessionConfiguration sessionConfiguration = new SessionConfiguration(SessionConfiguration.SESSION_REGULAR,outputConfigsAll, AsyncTask.SERIAL_EXECUTOR,
                    new CameraCaptureSession.StateCallback(){
                        @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_OFF);
                                mPreviewRequestBuilder.set(CaptureRequest.LENS_FOCUS_DISTANCE,0.0f);
                                // 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();
                            }
                        }

                        @Override
                        public void onConfigureFailed(
                                @NonNull CameraCaptureSession cameraCaptureSession) {
                            showToast("Failed");
                        }
                    });
            mCameraDevice.createCaptureSession(sessionConfiguration);
        } catch (CameraAccessException e) {
            e.printStackTrace();
        }
    }

    /**
     * Configures the necessary {@link Matrix} transformation to `mTextureView`.
     * This method should be called after the camera preview size is determined in
     * setUpCameraOutputs and also the size of `mTextureView` is fixed.
     *
     * @param viewWidth  The width of `mTextureView`
     * @param viewHeight The height of `mTextureView`
     */
    private void configureTransform(int viewWidth, int viewHeight) {
        Activity activity = getActivity();
        if (null == mTextureView|| null == mTextureView2 || null == mPreviewSize || null == activity) {
            return;
        }
        int rotation = activity.getWindowManager().getDefaultDisplay().getRotation();
        Matrix matrix = new Matrix();
        RectF viewRect = new RectF(0, 0, viewWidth, viewHeight);
        RectF bufferRect = new RectF(0, 0, mPreviewSize.getHeight(), mPreviewSize.getWidth());
        float centerX = viewRect.centerX();
        float centerY = viewRect.centerY();
        if (Surface.ROTATION_90 == rotation || Surface.ROTATION_270 == rotation) {
            bufferRect.offset(centerX - bufferRect.centerX(), centerY - bufferRect.centerY());
            matrix.setRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.FILL);
            float scale = Math.max(
                    (float) viewHeight / mPreviewSize.getHeight(),
                    (float) viewWidth / mPreviewSize.getWidth());
            matrix.postScale(scale, scale, centerX, centerY);
            matrix.postRotate(90 * (rotation - 2), centerX, centerY);
        } else if (Surface.ROTATION_180 == rotation) {
            matrix.postRotate(180, centerX, centerY);
        }
        mTextureView.setTransform(matrix);
        mTextureView2.setTransform(matrix);
    }

    /**
     * Initiate a still image capture.
     */
    private void takePicture() {
        lockFocus();
    }

    /**
     * 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;
            Log.d("cjc","1");
            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 {
            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;
            Log.d("cjc","2");
            mCaptureSession.capture(mPreviewRequestBuilder.build(), mCaptureCallback,
                    mBackgroundHandler);

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

    private void logImageReaderDetails(ImageReader imageReader) {
        int imageWidth = imageReader.getWidth();
        int imageHeight = imageReader.getHeight();
        int imageFormat = imageReader.getImageFormat();
        int maxImages = imageReader.getMaxImages();
        Surface imageReaderSurface = imageReader.getSurface();

        Log.d(TAG, "ImageReader 宽度：" + imageWidth + "，高度：" + imageHeight);
        Log.d(TAG, "ImageReader 格式：" + imageFormat);
        Log.d(TAG, "ImageReader 最大图像数：" + maxImages);
        Log.d(TAG, "ImageReader Surface：" + imageReaderSurface);
    }

    /**
     * Capture a still picture. This method should be called when we get a response in
     * {@link #mCaptureCallback} from both {@link #lockFocus()}.
     */

//    public 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.
//
//            //这里template不能用still_capture，猜测会造成两个摄像头抢而导致失败。除了这个其他template都可以
//            //template_record 3摄像头出来是黑的
//            //template_zero_shutter_lag延时严重
//            //template_video_snapshot 34ms 拍摄之后卡顿
//            //template_preview 20ms
//            final CaptureRequest.Builder captureRequest1 =
//                    mCameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_STILL_CAPTURE);
//            captureRequest1.addTarget(mImageReader1.getSurface());
//            captureRequest1.addTarget(mImageReader2.getSurface());
//
////            captureRequest1.set(CaptureRequest.DISTORTION_CORRECTION_MODE, CameraMetadata.DISTORTION_CORRECTION_MODE_OFF);
//            // Use the same AE and AF modes as the preview.
//            captureRequest1.set(CaptureRequest.CONTROL_AF_MODE,
//                    CaptureRequest.CONTROL_AF_MODE_OFF);
//            captureRequest1.set(CaptureRequest.LENS_FOCUS_DISTANCE,0.0f);
//            setAutoFlash(captureRequest1);
//
//            // Orientation
//            int rotation = activity.getWindowManager().getDefaultDisplay().getRotation();
//            captureRequest1.set(CaptureRequest.JPEG_ORIENTATION, getOrientation(rotation));
//
//
//
//            CameraCaptureSession.CaptureCallback CaptureCallback1
//                    = new CameraCaptureSession.CaptureCallback() {
//
//                @Override
//                public void onCaptureCompleted(@NonNull CameraCaptureSession session,
//                                               @NonNull CaptureRequest request,
//                                               @NonNull TotalCaptureResult result) {
//                    showToast("Saved: "+mFile2.toString());
//                    Log.d(TAG, mFile2.toString());
//                    unlockFocus();
//                }
//            };
//
//            mCaptureSession.stopRepeating();
//            mCaptureSession.abortCaptures();
//            mCaptureSession.capture(captureRequest1.build(), CaptureCallback1, mBackgroundHandler);
//
//            idx+=1;
//        } catch (CameraAccessException e) {
//            e.printStackTrace();
//        }
//    }

    public void captureStillPicture() {
        try {
            final Activity activity = getActivity();
            if (null == activity || null == mCameraDevice) {
                return;
            }

            // 创建用于拍摄图片的CaptureRequest.Builder对象

            // 这里使用TEMPLATE_STILL_CAPTURE模板，但只设置一个目标表面，以便每个请求只执行一次拍摄操作
            final CaptureRequest.Builder captureRequest1 =
                    mCameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_STILL_CAPTURE);
            captureRequest1.addTarget(mImageReader1.getSurface());
            captureRequest1.set(CaptureRequest.DISTORTION_CORRECTION_MODE, CameraMetadata.DISTORTION_CORRECTION_MODE_OFF);
            // 使用与预览相同的AE和AF模式
            captureRequest1.set(CaptureRequest.CONTROL_AF_MODE,
                    CaptureRequest.CONTROL_AF_MODE_OFF);
            captureRequest1.set(CaptureRequest.LENS_FOCUS_DISTANCE, 0.0f);
            setAutoFlash(captureRequest1);
            Log.d(TAG, "ImageReader 1 详情：");
            logImageReaderDetails(mImageReader1);


            final CaptureRequest.Builder captureRequest2 =
                    mCameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_STILL_CAPTURE);
            captureRequest2.addTarget(mImageReader2.getSurface());
            captureRequest2.set(CaptureRequest.DISTORTION_CORRECTION_MODE, CameraMetadata.DISTORTION_CORRECTION_MODE_HIGH_QUALITY);

// 使用与预览相同的AE和AF模式
            captureRequest2.set(CaptureRequest.CONTROL_AF_MODE,
                    CaptureRequest.CONTROL_AF_MODE_OFF);
            captureRequest2.set(CaptureRequest.LENS_FOCUS_DISTANCE, 0.0f);
            setAutoFlash(captureRequest2);
            Log.d(TAG, "ImageReader 2 详情：");
            logImageReaderDetails(mImageReader2);

            if (mImageReader1 != null && mImageReader2 != null &&
                    mImageReader1.getSurface() != null && mImageReader2.getSurface() != null) {
                Log.d(TAG, "all right");
            }

            // 设置旋转角度
            int rotation = activity.getWindowManager().getDefaultDisplay().getRotation();
            captureRequest1.set(CaptureRequest.JPEG_ORIENTATION, getOrientation(rotation));
            captureRequest2.set(CaptureRequest.JPEG_ORIENTATION, getOrientation(rotation));
            int frameCount = mImageReader1.getMaxImages();
            Log.d(TAG, "frameCount:"+frameCount);
            CameraCaptureSession.CaptureCallback captureCallback1 = new CameraCaptureSession.CaptureCallback() {
                private boolean isFirstCaptureCompleted = false;

                @Override
                public void onCaptureCompleted(@NonNull CameraCaptureSession session,
                                               @NonNull CaptureRequest request,
                                               @NonNull TotalCaptureResult result) {
                    Image image = mImageReader1.acquireNextImage();
                    if (image != null) {
                        // 处理图像数据
                        Log.d(TAG, "have images1");}
                    else {
                        Log.d(TAG, "no have images1");
                    }
                    if (!isFirstCaptureCompleted) {
                        if (mFile1 != null) {
                            Log.d(TAG, "Saved: " + mFile1.toString());
                        }
                        Log.d(TAG, "mFile1 is null");
                        isFirstCaptureCompleted = true;
                    } else {
                        // 第二次拍摄完成后解锁焦点
                        unlockFocus();
                    }
                }
            };

            CameraCaptureSession.CaptureCallback captureCallback2 = new CameraCaptureSession.CaptureCallback() {
                @Override
                public void onCaptureCompleted(@NonNull CameraCaptureSession session,
                                               @NonNull CaptureRequest request,
                                               @NonNull TotalCaptureResult result) {
                    Image image = mImageReader2.acquireNextImage();
                    if (image != null) {
                        // 处理图像数据
                        Log.d(TAG, "have images");}
                    else {
                        Log.d(TAG, "no have images");
                    }
//                    // 触发 mOnImageAvailableListener2
//                    if (mOnImageAvailableListener2 != null) {
//                        mOnImageAvailableListener2.onImageAvailable(mImageReader2);
//                    }
                    if (mFile2 != null) {
                        Log.d(TAG, "Saved: " + mFile2.toString());
                    } else {
                        Log.e(TAG, "mFile2 is null");
                        unlockFocus();
                    }
                    // 解锁焦点

                }
            };

            mCaptureSession.stopRepeating();
            mCaptureSession.abortCaptures();

// 执行第一次拍摄操作：captureRequest1
            mCaptureSession.capture(captureRequest1.build(), captureCallback1, mBackgroundHandler);

// 等待第一次拍摄完成后，再执行第二次拍摄操作：captureRequest2
            mCaptureSession.capture(captureRequest2.build(), captureCallback2, mBackgroundHandler);


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

    /**
     * Retrieves the JPEG orientation from the specified screen rotation.
     *
     * @param rotation The screen rotation.
     * @return The JPEG orientation (one of 0, 90, 270, and 360)
     */
    private int getOrientation(int rotation) {
        // Sensor orientation is 90 for most devices, or 270 for some devices (eg. Nexus 5X)
        // We have to take that into account and rotate JPEG properly.
        // For devices with orientation of 90, we simply return our mapping from ORIENTATIONS.
        // For devices with orientation of 270, we need to rotate the JPEG 180 degrees.
        return (ORIENTATIONS.get(rotation) + mSensorOrientation + 270) % 360;
    }

    /**
     * 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;
            Log.d("cjc","4");
            mCaptureSession.setRepeatingRequest(mPreviewRequest, mCaptureCallback,
                    mBackgroundHandler);

            new Thread(new Runnable() {
                @Override
                public void run() {

                    try {
                        Thread.sleep(250); // 休眠1秒
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }

                    if(flag==1){
                        captureStillPicture();
                    }

                }
            }).start();



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

    @Override
    public void onClick(View view) {
        if (view.getId() == R.id.picture) {
            takePicture();
        } else if (view.getId() == R.id.info) {
            Activity activity = getActivity();
            if (null != activity) {
                new AlertDialog.Builder(activity)
                        .setMessage(R.string.intro_message)
                        .setPositiveButton(android.R.string.ok, null)
                        .show();
            }
        }
    }

    private void setAutoFlash(CaptureRequest.Builder requestBuilder) {
        if (mFlashSupported) {
            requestBuilder.set(CaptureRequest.CONTROL_AE_MODE,
                    CaptureRequest.CONTROL_AE_MODE_ON_AUTO_FLASH);
        }
    }

    /**
     * Saves a JPEG {@link Image} into the specified {@link File}.
     */
    private static class ImageSaver implements Runnable {

        /**
         * The JPEG image
         */
        private final Image mImage;
        /**
         * The file we save the image into.
         */
        private final File mFile;

        ImageSaver(Image image, File file) {
            mImage = image;
            mFile = file;
        }

        @Override
        public void run() {
            ByteBuffer buffer = mImage.getPlanes()[0].getBuffer();
            byte[] bytes = new byte[buffer.remaining()];
            buffer.get(bytes);
            FileOutputStream output = null;
            try {
                output = new FileOutputStream(mFile);
                output.write(bytes);
            } catch (IOException e) {
                e.printStackTrace();
            } finally {
                mImage.close();
                if (null != output) {
                    try {
                        output.close();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }
        }

    }

    /**
     * Compares two {@code Size}s based on their areas.
     */
    static class CompareSizesByArea implements Comparator<Size> {

        @Override
        public int compare(Size lhs, Size rhs) {
            // We cast here to ensure the multiplications won't overflow
            return Long.signum((long) lhs.getWidth() * lhs.getHeight() -
                    (long) rhs.getWidth() * rhs.getHeight());
        }

    }

    /**
     * Shows an error message dialog.
     */
    public static class ErrorDialog extends DialogFragment {

        private static final String ARG_MESSAGE = "message";

        public static ErrorDialog newInstance(String message) {
            ErrorDialog dialog = new ErrorDialog();
            Bundle args = new Bundle();
            args.putString(ARG_MESSAGE, message);
            dialog.setArguments(args);
            return dialog;
        }

        @NonNull
        @Override
        public Dialog onCreateDialog(Bundle savedInstanceState) {
            final Activity activity = getActivity();
            return new AlertDialog.Builder(activity)
                    .setMessage(getArguments().getString(ARG_MESSAGE))
                    .setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialogInterface, int i) {
                            activity.finish();
                        }
                    })
                    .create();
        }

    }

    /**
     * Shows OK/Cancel confirmation dialog about camera permission.
     */
    public static class ConfirmationDialog extends DialogFragment {

        @NonNull
        @Override
        public Dialog onCreateDialog(Bundle savedInstanceState) {
            final Fragment parent = getParentFragment();
            return new AlertDialog.Builder(getActivity())
                    .setMessage(R.string.request_permission)
                    .setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            parent.requestPermissions(new String[]{Manifest.permission.CAMERA},
                                    REQUEST_CAMERA_PERMISSION);
                        }
                    })
                    .setNegativeButton(android.R.string.cancel,
                            new DialogInterface.OnClickListener() {
                                @Override
                                public void onClick(DialogInterface dialog, int which) {
                                    Activity activity = parent.getActivity();
                                    if (activity != null) {
                                        activity.finish();
                                    }
                                }
                            })
                    .create();
        }
    }

}