本文整理了Java中android.hardware.Camera.cancelAutoFocus()方法的一些代码示例，展示了Camera.cancelAutoFocus()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.cancelAutoFocus()方法的具体详情如下：
包路径：android.hardware.Camera
类名称：Camera
方法名：cancelAutoFocus

Camera.cancelAutoFocus介绍

暂无

代码示例

代码示例来源：origin: googlesamples/android-vision

/**
 * Cancels any auto-focus function in progress.
 * Whether or not auto-focus is currently in progress,
 * this function will return the focus position to the default.
 * If the camera does not support auto-focus, this is a no-op.
 *
 * @see #autoFocus(AutoFocusCallback)
 */
public void cancelAutoFocus() {
  synchronized (cameraLock) {
    if (camera != null) {
      camera.cancelAutoFocus();
    }
  }
}

代码示例来源：origin: googlesamples/android-vision

/**
 * Cancels any auto-focus function in progress.
 * Whether or not auto-focus is currently in progress,
 * this function will return the focus position to the default.
 * If the camera does not support auto-focus, this is a no-op.
 *
 * @see #autoFocus(AutoFocusCallback)
 */
public void cancelAutoFocus() {
  synchronized (mCameraLock) {
    if (mCamera != null) {
      mCamera.cancelAutoFocus();
    }
  }
}

代码示例来源：origin: googlesamples/android-vision

/**
 * Cancels any auto-focus function in progress.
 * Whether or not auto-focus is currently in progress,
 * this function will return the focus position to the default.
 * If the camera does not support auto-focus, this is a no-op.
 *
 * @see #autoFocus(AutoFocusCallback)
 */
public void cancelAutoFocus() {
  synchronized (mCameraLock) {
    if (mCamera != null) {
      mCamera.cancelAutoFocus();
    }
  }
}

代码示例来源：origin: rmtheis/android-ocr

synchronized void stop() {
 if (useAutoFocus) {
  camera.cancelAutoFocus();
 }
 if (outstandingTask != null) {
  outstandingTask.cancel();
  outstandingTask = null;
 }
 active = false;
 manual = false;
}

代码示例来源：origin: JZ-Darkal/AndroidHttpCapture

synchronized void stop() {
  stopped = true;
  if (useAutoFocus) {
    cancelOutstandingTask();
    // Doesn't hurt to call this even if not focusing
    try {
      camera.cancelAutoFocus();
    } catch (RuntimeException re) {
      // Have heard RuntimeException reported in Android 4.0.x+; continue?
      Log.w(TAG, "Unexpected exception while cancelling focusing", re);
    }
  }
}

代码示例来源：origin: journeyapps/zxing-android-embedded

/**
   * Stop auto-focus.
   */
  public void stop() {
    stopped = true;
    focusing = false;
    cancelOutstandingTask();
    if (useAutoFocus) {
      // Doesn't hurt to call this even if not focusing
      try {
        camera.cancelAutoFocus();
      } catch (RuntimeException re) {
        // Have heard RuntimeException reported in Android 4.0.x+; continue?
        Log.w(TAG, "Unexpected exception while cancelling focusing", re);
      }
    }
  }
}

代码示例来源：origin: dm77/barcodescanner

public void stopCameraPreview() {
  if(mCameraWrapper != null) {
    try {
      mPreviewing = false;
      getHolder().removeCallback(this);
      mCameraWrapper.mCamera.cancelAutoFocus();
      mCameraWrapper.mCamera.setOneShotPreviewCallback(null);
      mCameraWrapper.mCamera.stopPreview();
    } catch(Exception e) {
      Log.e(TAG, e.toString(), e);
    }
  }
}

代码示例来源：origin: dm77/barcodescanner

public void setAutoFocus(boolean state) {
  if(mCameraWrapper != null && mPreviewing) {
    if(state == mAutoFocus) {
      return;
    }
    mAutoFocus = state;
    if(mAutoFocus) {
      if (mSurfaceCreated) { // check if surface created before using autofocus
        Log.v(TAG, "Starting autofocus");
        safeAutoFocus();
      } else {
        scheduleAutoFocus(); // wait 1 sec and then do check again
      }
    } else {
      Log.v(TAG, "Cancelling autofocus");
      mCameraWrapper.mCamera.cancelAutoFocus();
    }
  }
}

代码示例来源：origin: vondear/RxTool

@Override
void takePicture() {
  if (!isCameraOpened()) {
    throw new IllegalStateException(
        "Camera is not ready. Call start() before takePicture().");
  }
  if (getAutoFocus()) {
    mCamera.cancelAutoFocus();
    mCamera.autoFocus(new Camera.AutoFocusCallback() {
      @Override
      public void onAutoFocus(boolean success, Camera camera) {
        takePictureInternal();
      }
    });
  } else {
    takePictureInternal();
  }
}

代码示例来源：origin: vondear/RxTool

Rect meteringRect = calculateTapArea(event.getX(), event.getY(), 1.5f, previewSize);
camera.cancelAutoFocus();

代码示例来源：origin: google/cameraview

@Override
void takePicture() {
  if (!isCameraOpened()) {
    throw new IllegalStateException(
        "Camera is not ready. Call start() before takePicture().");
  }
  if (getAutoFocus()) {
    mCamera.cancelAutoFocus();
    mCamera.autoFocus(new Camera.AutoFocusCallback() {
      @Override
      public void onAutoFocus(boolean success, Camera camera) {
        takePictureInternal();
      }
    });
  } else {
    takePictureInternal();
  }
}

代码示例来源：origin: LaiFeng-Android/SopCastComponent

public boolean doAutofocus(Camera.AutoFocusCallback focusCallback) {
  if(mState != State.PREVIEW || mCameraDevice == null) {
    return false;
  }
  // Make sure our auto settings aren't locked
  Camera.Parameters params = mCameraDevice.getParameters();
  if (params.isAutoExposureLockSupported()) {
    params.setAutoExposureLock(false);
  }
  if (params.isAutoWhiteBalanceLockSupported()) {
    params.setAutoWhiteBalanceLock(false);
  }
  mCameraDevice.setParameters(params);
  mCameraDevice.cancelAutoFocus();
  mCameraDevice.autoFocus(focusCallback);
  return true;
}

代码示例来源：origin: robolectric/robolectric

@Test
public void testCancelAutoFocus() {
 assertThat(shadowCamera.hasRequestedAutoFocus()).isFalse();
 camera.autoFocus(null);
 assertThat(shadowCamera.hasRequestedAutoFocus()).isTrue();
 camera.cancelAutoFocus();
 assertThat(shadowCamera.hasRequestedAutoFocus()).isFalse();
}

代码示例来源：origin: zcolin/ZEasyPR

@Override
  public void onAutoFocus(boolean success, Camera arg1) {
    if (success) {
      reStartPreView();
      mCamera.cancelAutoFocus();// 只有加上了这一句，才会自动对焦。
    }
  }
});

代码示例来源：origin: blockchain/Android-Merchant-App

public void surfaceDestroyed(SurfaceHolder holder) {
  // Surface will be destroyed when we return, so stop the preview.
  if (mCamera != null) {
    mCamera.cancelAutoFocus();
    mCamera.stopPreview();
  }
}

代码示例来源：origin: runner365/android_rtmppush_sdk

@Override
  public void onAutoFocus(boolean success, Camera camera) {
    if (success) {
      InitCamera();
      camera.cancelAutoFocus();//只有加上了这一句，才会自动对焦。
    }
  }
});

代码示例来源：origin: Yuphee/RecordVideo

/**
 * 自动对焦
 */
public void autoFocus() {
  mCamera.cancelAutoFocus();
  mCamera.autoFocus(null);
}

代码示例来源：origin: FacePlusPlus/MegviiFacepp-Android-SDK

private void autoFocus() {
  if (mCamera != null && isBackCamera) {
    mCamera.cancelAutoFocus();
    Parameters parameters = mCamera.getParameters();
    parameters.setFocusMode(Parameters.FOCUS_MODE_AUTO);
    mCamera.setParameters(parameters);
    mCamera.autoFocus(null);
  }
}

代码示例来源：origin: zxfnicholas/CameraSDK

private void pointFocus(int x, int y) {
  cameraInst.cancelAutoFocus();
  parameters = cameraInst.getParameters();
  if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
    showPoint(x, y);
  }
  cameraInst.setParameters(parameters);
  autoFocus();
}

代码示例来源：origin: sxpl/FaceAC

public void pointFocus(MotionEvent event) {
  mCamera.cancelAutoFocus();
  parameters = mCamera.getParameters();
  if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
    //showPoint(x, y);
    focusOnTouch(event);
  }
  mCamera.setParameters(parameters);
  autoFocus();
}