@Override
        public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
            Camera.Parameters parameters = mCamera.getParameters();
            Camera.Size size = getBestPreviewSize(width, height, parameters);

            if (mInPreview) {
                mCamera.stopPreview();
            }

            Display display = ((WindowManager) getSystemService(WINDOW_SERVICE)).getDefaultDisplay();

            try {
                if (display.getRotation() == Surface.ROTATION_0) {
                    mCamera.setDisplayOrientation(90);
                    parameters = mCamera.getParameters();
                    size = getBestPreviewSize(width, height, parameters);
                }

                if (display.getRotation() == Surface.ROTATION_270) {
                    mCamera.setDisplayOrientation(180);
                    parameters = mCamera.getParameters();
                    size = getBestPreviewSize(width, height, parameters);
                }
            } catch (RuntimeException e) {
                Toast.makeText(ShowPhotoActivity.this, "Cannot get camera parameters. Try again.", Toast.LENGTH_LONG).show();
                return;
            }

            List<String> focusModes = parameters.getSupportedFocusModes();
            if (focusModes.contains(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE)) {
                parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE);
            } else if (focusModes.contains(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE)) {
                parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_AUTO);
            }

            updateFlashParam(parameters);

            Camera.Size s = getBestResolution(parameters);
            parameters.setPreviewSize(size.width, size.height);
            parameters.setPictureSize(s.width, s.height);

            mCamera.setParameters(parameters);
            if (mInPreview) {
                mCamera.startPreview();
            }
        }