如何在安卓系统中使用Camera.Parameter打开并捕捉黑白模式的摄像头画面

import android.hardware.Camera;
import android.view.SurfaceHolder;
import android.view.SurfaceView;

public class MainActivity extends AppCompatActivity implements SurfaceHolder.Callback {
    private Camera mCamera;
    private SurfaceView mSurfaceView;
    private SurfaceHolder mSurfaceHolder;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mSurfaceView = findViewById(R.id.surfaceView);
        mSurfaceHolder = mSurfaceView.getHolder();
        mSurfaceHolder.addCallback(this);
    }

    @Override
    public void surfaceCreated(SurfaceHolder holder) {
        try {
            mCamera = Camera.open();
            mCamera.setPreviewDisplay(holder);

            Camera.Parameters parameters = mCamera.getParameters();
            parameters.setColorEffect(Camera.Parameters.EFFECT_MONO);
            mCamera.setParameters(parameters);

            mCamera.startPreview();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    @Override
    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
        // 在此处可以处理预览画面的尺寸和方向的调整
    }

    @Override
    public void surfaceDestroyed(SurfaceHolder holder) {
        mCamera.stopPreview();
        mCamera.release();
    }
}