Android : facebook post image/text using graph api error

need to post a status message or if user selected a image with that status msg on facebook without using dialog .

final Session sessionfb = ParseFacebookUtils.getSession();

    List<String> permissions = sessionfb.getPermissions();
    if (!permissions.contains("publish_actions")) {

        Session.NewPermissionsRequest newPermissionsRequest = new Session.NewPermissionsRequest(
                FlyTags.this, Arrays.asList("publish_actions"))
                .setCallback(newPermissionsCallback).setRequestCode(1);
           sessionfb.requestNewPublishPermissions(newPermissionsRequest);

    }
    else {

        Bundle parameters = new Bundle();
        parameters.putString("message", mfinalmsg);
        parameters.putString("description", "test");

        if (imgdata != null) {

            parameters.putByteArray("picture", imgdata);
                      }
        new Request(sessionfb, "me/photos/feed", parameters, HttpMethod.POST,
                new Request.Callback() {
                    public void onCompleted(Response response) {

                        Debug.e("facebook post response",
                                response.toString());
                    }
                }).executeAsync();

response :

{Response:  responseCode: 500, graphObject: null, error: {HttpStatus: 500, errorCode: 100, errorType: FacebookApiException, errorMessage: Invalid parameter}, isFromCache:false}