android.hardware.Camera.unlock()方法的使用及代码示例

x33g5p2x  于2022-01-18 转载在 其他  
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本文整理了Java中android.hardware.Camera.unlock()方法的一些代码示例，展示了Camera.unlock()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Camera.unlock()方法的具体详情如下：
包路径：android.hardware.Camera
类名称：Camera
方法名：unlock

Camera.unlock介绍

暂无

代码示例

代码示例来源：origin: guardianproject/haven

private boolean prepare(Camera camera) {
  mCamera = camera;
  mMediaRecorder = new MediaRecorder();
  mCamera.unlock();
  mMediaRecorder.setCamera(mCamera);
  mMediaRecorder.setPreviewDisplay(mHolder.getSurface());
//    mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
  mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.DEFAULT);
  mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
 //   mMediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
  mMediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.MPEG_4_SP);
  mMediaRecorder.setMaxDuration(mSeconds);
  mMediaRecorder.setOutputFile(mOutputFile);
  try {
    mMediaRecorder.prepare();
  } catch(IllegalStateException e) {
    Log.d("ERROR", "IllegalStateException preparing MediaRecorder: " + e.getMessage());
    releaseMediaRecorder();
    return false;
  } catch (IOException e) {
    Log.d("ERROR", "IOException preparing MediaRecorder: " + e.getMessage());
    releaseMediaRecorder();
    return false;
  }
  return true;
}

代码示例来源：origin: robolectric/robolectric

@Test
public void testUnlock() throws Exception {
 assertThat(shadowCamera.isLocked()).isTrue();
 camera.unlock();
 assertThat(shadowCamera.isLocked()).isFalse();
}

代码示例来源：origin: robolectric/robolectric

@Test
public void testReconnect() throws Exception {
 camera.unlock();
 assertThat(shadowCamera.isLocked()).isFalse();
 camera.reconnect();
 assertThat(shadowCamera.isLocked()).isTrue();
}

代码示例来源：origin: stackoverflow.com

mCamera.unlock();

代码示例来源：origin: stackoverflow.com

camera.unlock();

代码示例来源：origin: florent37/CameraFragment

try {
  camera.lock();
  camera.unlock();
  videoRecorder.setCamera(camera);

代码示例来源：origin: stackoverflow.com

Camera camera = getCamera();
camera.stopPreview();
camera.lock();
camera.release();

camera = Camera.open();
camera.unlock();

代码示例来源：origin: stackoverflow.com

MediaRecorder mMediaRecorder = new MediaRecorder();
Camera mCamera = Camere.open();
Camera.Parameters parameters = mCamera.getParameters();
parameters.set("camera-id", 2);
parameters.setPreviewSize(640, 480); // or (800,480)
mCamera.setParameters(parameters);
mCamera.unlock(); // unlock, to give other process to access it otherwise it can't be used later
mMediaRecorder.setCamera(mCamera);
// continue with mMediaRecorder standard routines here

代码示例来源：origin: guoxiaoxing/phoenix

try {
  camera.lock();
  camera.unlock();
  mMediaRecorder.setCamera(camera);

代码示例来源：origin: stackoverflow.com

myCamera.unlock();

代码示例来源：origin: hypeapps/Endoscope

protected void unlockCamera() {
  if (!mUnlocked) {
    Log.d(TAG,"Unlocking camera");
    try {	
      mCamera.unlock();
    } catch (Exception e) {
      Log.e(TAG,e.getMessage());
    }
    mUnlocked = true;
  }
}

代码示例来源：origin: Affectiva/android-sdk-samples

synchronized public void unlock() {
  checkTaken();
  camera.unlock();
}

代码示例来源：origin: stackoverflow.com

private void knowIfCameraIsAvailable() {

  int camNumber = Camera.getNumberOfCameras();
  System.out.println("Number of Camera = " + camNumber);

  for (int i = 0; i < camNumber; i++) {
    try {
      Log.e("Camera ID", "ID  ==  " + i);
      Camera cam = Camera.open(i);
      System.out.println("Camera object = " + cam);
      Camera.Parameters camParameter = cam.getParameters();
      System.out.println("camParameter.getMaxZoom() = "
          + camParameter.getMaxZoom());
      cam.unlock();
      cam.release();
    } catch (NullPointerException e) {
      Log.i("NullPointer", "Object NULL");
      e.printStackTrace();
    } catch (IllegalStateException e) {
      Log.i("IllegalState", "Illegal State");
      e.printStackTrace();
    } catch (Exception e) {
      Log.i("Exception", "Other Exception");
      e.printStackTrace();
    }
  }
}

代码示例来源：origin: SingleShu/VideoRecord

/**
 * 初始化摄像头
 *
 * @throws IOException
 * @author zwj
 * @date 2016-06-21
 */
private void initCamera() {
  if (mCamera != null) {
    freeCameraResource();
  }
  try {
    mCamera = Camera.open();
    if (mCamera == null)
      return;
    initParameters();
    mCamera.setDisplayOrientation(90);//竖屏显示
    mCamera.setPreviewDisplay(mSurfaceHolder);
    mCamera.startPreview();
    mCamera.unlock();
  } catch (Exception e) {
    e.printStackTrace();
    freeCameraResource();
  }
}

代码示例来源：origin: Gentleman-jun/VideoRecordDemo

/**
 * 开始录制视频
 */
public boolean startRecord() {
  initCamera();
  //录制视频前必须先解锁Camera
  mCamera.unlock();
  configMediaRecorder();
  try {
    //开始录制
    mediaRecorder.prepare();
    mediaRecorder.start();
  } catch (IOException e) {
    return false;
  }
  return true;
}

代码示例来源：origin: stackoverflow.com

camera.unlock();
MediaRecorder recorder = new MediaRecorder();
recorder.setCamera(camera);

代码示例来源：origin: zhantong/AndroidCamera-TouchToFocusMeteringZoom

private boolean prepareVideoRecorder() {
  mCamera = getCameraInstance();
  mMediaRecorder = new MediaRecorder();
  mCamera.unlock();
  mMediaRecorder.setCamera(mCamera);
  mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER);
  mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
  mMediaRecorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH));
  SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getContext());
  String prefVideoSize = prefs.getString("video_size", "");
  String[] split = prefVideoSize.split("x");
  mMediaRecorder.setVideoSize(Integer.parseInt(split[0]), Integer.parseInt(split[1]));
  mMediaRecorder.setOutputFile(getOutputMediaFile(MEDIA_TYPE_VIDEO).toString());
  mMediaRecorder.setPreviewDisplay(mHolder.getSurface());
  int rotation = getDisplayOrientation();
  mMediaRecorder.setOrientationHint(rotation);
  try {
    mMediaRecorder.prepare();
  } catch (IllegalStateException e) {
    Log.d(TAG, "IllegalStateException preparing MediaRecorder: " + e.getMessage());
    releaseMediaRecorder();
    return false;
  } catch (IOException e) {
    Log.d(TAG, "IOException preparing MediaRecorder: " + e.getMessage());
    releaseMediaRecorder();
    return false;
  }
  return true;
}

代码示例来源：origin: huangfangyi/YiChat

private boolean startRecorderInternal() throws Exception {
  shutdownCamera();
  if (!initCamera())
    return false;
  switchCamera.setVisibility(View.GONE);
  mediaRecorder = new MediaRecorder();
  camera.unlock();
  mediaRecorder.setCamera(camera);
  mediaRecorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER);
  mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
  setCamcorderProfile();
  mediaRecorder.setPreviewDisplay(surfaceHolder.getSurface());
  mediaRecorder.setMaxDuration(1000 * VIDEO_TIMES);
  mediaRecorder.setOutputFile(filename);
  setVideoOrientation();
  mediaRecorder.prepare();
  mediaRecorder.start();
  return true;
}

代码示例来源：origin: nglauber/dominando_android2

private boolean prepararGravacao() {
  abrirCamera();
  mCamera.unlock();
  mMediaRecorder = new MediaRecorder();
  mMediaRecorder.setCamera(mCamera);
  mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER);
  mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
  mMediaRecorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH));
  mMediaRecorder.setOutputFile(mCaminhoArquivo.toString());
  mMediaRecorder.setMaxDuration(60000); // 1 minuto
  mMediaRecorder.setOnInfoListener(new MediaRecorder.OnInfoListener() {
    @Override
    public void onInfo(MediaRecorder mr, int what, int extra) {
      if (what == MediaRecorder.MEDIA_RECORDER_INFO_MAX_DURATION_REACHED) {
        concluirGravacao();
      }
    }
  });
  mMediaRecorder.setPreviewDisplay(mPreview.getHolder().getSurface());
  try {
    mMediaRecorder.prepare();
  } catch (IOException e) {
    e.printStackTrace();
    liberarMediaRecorder();
    return false;
  }
  return true;
}
private void concluirGravacao() {

代码示例来源：origin: zx391324751/weChatDemo

private void initRecorder() {
  recorder = new MediaRecorder();
  camera = Camera.open(Camera.CameraInfo.CAMERA_FACING_BACK);
  if (camera != null) {
    camera.setDisplayOrientation(90);//摄像图旋转90度
    camera.unlock();
    recorder.setCamera(camera);
  }
  recorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);
  recorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
  recorder.setOrientationHint(90); //旋转90度
  //480的清晰度，相当于高清视频与标清视频之间水准，10秒大概5mb左右
  CamcorderProfile cpHigh = CamcorderProfile.get(CamcorderProfile.QUALITY_480P);
  recorder.setProfile(cpHigh);
  recorder.setOutputFile(VIDEO_PATH); //文件名先随便写吧，毕竟只是demo
  recorder.setMaxDuration(10000); // 10 seconds
  recorder.setMaxFileSize(5000000); // Approximately 5 megabytes
}

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