结果：我实现了一个扩展JavaCameraView的新类，并为自己实现了功能takePicture。
import org.opencv.android.JavaCameraView;import java.io.FileOutputStream;import java.util.List;import android.content.Context;import android.hardware.Camera;import android.hardware.Camera.PictureCallback;import android.hardware.Camera.Size;import android.util.AttributeSet;import android.util.Log;public class MyCameraView extends JavaCameraView implements PictureCallback { private static final String TAG = "myCameraView"; private String mPictureFileName; public MyCameraView(Context context, AttributeSet attrs) { super(context, attrs); } public List<String> getEffectList() { return mCamera.getParameters().getSupportedColorEffects(); } public boolean isEffectSupported() { return (mCamera.getParameters().getColorEffect() != null); } public String getEffect() { return mCamera.getParameters().getColorEffect(); } public void setEffect(String effect) { Camera.Parameters params = mCamera.getParameters(); params.setColorEffect(effect); mCamera.setParameters(params); } public List<Size> getResolutionList() { return mCamera.getParameters().getSupportedPreviewSizes(); } public void setResolution(Size resolution) { disconnectCamera(); mMaxHeight = resolution.height; mMaxWidth = resolution.width; connectCamera(getWidth(), getHeight()); } public Size getResolution() { return mCamera.getParameters().getPreviewSize(); } public void takePicture(final String fileName) { Log.i(TAG, "Taking picture"); this.mPictureFileName = fileName; // Postview and jpeg are sent in the same buffers if the queue is not empty when performing a capture. // Clear up buffers to avoid mCamera.takePicture to be stuck because of a memory issue mCamera.setPreviewCallback(null); // PictureCallback is implemented by the current class mCamera.takePicture(null, null, this); } @Override public void onPictureTaken(byte[] data, Camera camera) { Log.i(TAG, "Saving a bitmap to file"); // The camera preview was automatically stopped. Start it again. mCamera.startPreview(); mCamera.setPreviewCallback(this); // Write the image in a file (in jpeg format) try { FileOutputStream fos = new FileOutputStream(mPictureFileName); fos.write(data); fos.close(); } catch (java.io.IOException e) { Log.e("PictureDemo", "Exception in photoCallback", e); } }}--
private MyCameraView mOpenCvCameraView; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { mOpenCvCameraView = (MyCameraView) view.findViewById(R.id.fd_activity_surface_view); mOpenCvCameraView.setCvCameraViewListener(this); return view; } @Override public void onResume() { super.onResume(); mOpenCvCameraView.enableView(); String filename = "teste.jpg"; mOpenCvCameraView.takePicture(filename); mOpenCvCameraView.disableView(); }
