android - 如何使用 Facebook SDK for android 在 Facebook 墙上发布文字或图片

Question

我在我的应用程序中使用 Facebook SDK 与 Facebook 的东西进行交互，因为我是 SDK 的新手，我不知道如何使用 Facebook SDK 将简单的文本或图像/图片发布到我的墙上。

目前我已经实现了登录内容，现在想将此功能添加到我的应用程序中，用户可以在其中以文本甚至图像模式（如果可能的话）发布他/她的状态。

请帮我解决这个问题。任何帮助都是不言而喻的。

提前致谢。

Answer 1

FacebookSharingActivity.java

public class FacebookSharingActivity extends FragmentActivity {

private LinearLayout lnrPbr;
private IjoomerTextView txtPbr;
private FacebookSharingMainFragment mainFragment;
private UiLifecycleHelper uiHelper;

private static final String PENDING_PUBLISH_KEY = "pendingPublishReauthorization";
private boolean pendingPublishReauthorization = false;
private boolean isSharingData = false;

@Override
protected void onCreate(Bundle savedInstanceState) {
    ThemeManager.getInstance().setTheme(this);
    super.onCreate(savedInstanceState);

    IjoomerUtilities.mSmartAndroidActivity = this;
    if (savedInstanceState == null) {
        // Add the fragment on initial activity setup
        mainFragment = new FacebookSharingMainFragment();
        getSupportFragmentManager().beginTransaction().add(android.R.id.content, mainFragment).commit();
    } else {
        // Or set the fragment from restored state info
        mainFragment = (FacebookSharingMainFragment) getSupportFragmentManager().findFragmentById(android.R.id.content);
        pendingPublishReauthorization = savedInstanceState.getBoolean(PENDING_PUBLISH_KEY, false);
    }

    uiHelper = new UiLifecycleHelper(this, callback);
    uiHelper.onCreate(savedInstanceState);

}

@Override
public void onResume() {
    super.onResume();
    lnrPbr = (LinearLayout) findViewById(R.id.lnrPbr);
    txtPbr = (IjoomerTextView) findViewById(R.id.txtPbr);
    txtPbr.setText(getString(R.string.facebook_wall_posting));
    Session session = Session.getActiveSession();
    if (session != null && (session.isOpened())) {
        onSessionStateChange(session, session.getState(), null);
    } else {
        if (session == null) {
            session = new Session(this);
            Session.setActiveSession(session);
        }
        OpenRequest openRequest = new OpenRequest(this);
        List<String> writePermissions = new ArrayList<String>();
        writePermissions.add("publish_actions");
        openRequest.setPermissions(writePermissions);
        openRequest.setCallback(callback);
        session.openForPublish(openRequest);
    }

    uiHelper.onResume();
}

@Override
public void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);
    outState.putBoolean(PENDING_PUBLISH_KEY, pendingPublishReauthorization);
    uiHelper.onSaveInstanceState(outState);
}

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    Session.getActiveSession().onActivityResult(this, requestCode, resultCode, data);
    if (resultCode == RESULT_CANCELED) {
        finish();
    } else {
        uiHelper.onActivityResult(requestCode, resultCode, data);
    }
}

@Override
public void onPause() {
    super.onPause();
    uiHelper.onPause();
}

@Override
public void onDestroy() {
    super.onDestroy();
    uiHelper.onDestroy();
    try {
        Session.getActiveSession().closeAndClearTokenInformation();
        Session.setActiveSession(null);
    } catch (Throwable e) {
        e.printStackTrace();
    }
}

/**
 * This method used to after session state change listener.
 * 
 * @param session
 *            represent {@link Session}
 * @param state
 *            represent {@link SessionState}
 * @param exception
 *            represent exception
 */
private void onSessionStateChange(Session session, SessionState state, Exception exception) {
    if (state.isOpened() && !isSharingData) {
        pendingPublishReauthorization = false;
        postData();
    } else if (state.isClosed()) {
        OpenRequest openRequest = new OpenRequest(this);
        List<String> writePermissions = new ArrayList<String>();
        writePermissions.add("publish_actions");
        openRequest.setPermissions(writePermissions);
        openRequest.setCallback(callback);
        session.openForPublish(openRequest);
    }
}

/**
 * This method used to get session status callback change listener.
 */
private Session.StatusCallback callback = new Session.StatusCallback() {
    @Override
    public void call(Session session, SessionState state, Exception exception) {
        onSessionStateChange(session, state, exception);
    }
};

/**
 * This method used to post data on facebook.
 */
private void postData() {
    lnrPbr.setVisibility(View.VISIBLE);
    isSharingData = true;

    Session session = Session.getActiveSession();
    if (session != null) {

        Bundle postParams = new Bundle();
        postParams.putString("name", getIntent().getStringExtra("IN_SHARE_CAPTION") == null ? "" : getIntent().getStringExtra("IN_SHARE_CAPTION"));
        postParams.putString("caption", getIntent().getStringExtra("IN_SHARE_CAPTION") == null ? "" : getIntent().getStringExtra("IN_SHARE_CAPTION"));
        postParams.putString("description", getIntent().getStringExtra("IN_SHARE_DESCRIPTION") == null ? "" : getIntent().getStringExtra("IN_SHARE_DESCRIPTION"));
        postParams.putString("link", getIntent().getStringExtra("IN_SHARE_SHARELINK") == null ? "" : getIntent().getStringExtra("IN_SHARE_SHARELINK"));
        postParams.putString("picture", getIntent().getStringExtra("IN_SHARE_THUMB") == null ? "" : getIntent().getStringExtra("IN_SHARE_THUMB"));
        postParams.putString("message", getIntent().getStringExtra("IN_SHARE_MESSAGE") == null ? "" : getIntent().getStringExtra("IN_SHARE_MESSAGE"));

        Request.Callback callback = new Request.Callback() {

            public void onCompleted(Response response) {
                isSharingData = false;
                lnrPbr.setVisibility(View.GONE);
                FacebookRequestError error = response.getError();
                if (error != null) {
                    IjoomerUtilities.getCustomOkDialog(getString(R.string.facebook_share_title), error.getErrorMessage(), getString(R.string.ok), R.layout.ijoomer_ok_dialog,
                            new CustomAlertNeutral() {

                                @Override
                                public void NeutralMethod() {
                                    finish();
                                }
                            });
                } else {
                    IjoomerUtilities.getCustomOkDialog(getString(R.string.facebook_share_title), getString(R.string.facebook_share_success), getString(R.string.ok),
                            R.layout.ijoomer_ok_dialog, new CustomAlertNeutral() {

                                @Override
                                public void NeutralMethod() {
                                    finish();
                                }
                            });
                }
            }
        };

        Request request = new Request(Session.getActiveSession(), "me/feed", postParams, HttpMethod.POST, callback);

        RequestAsyncTask task = new RequestAsyncTask(request);
        task.execute();
    }

}}

FacebookSharingMainFragment.class

public class FacebookSharingMainFragment extends Fragment {

/**
 * Overrides method
 */
private static final List<String> PERMISSIONS = Arrays.asList("publish_actions","publish_stream");
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View view = inflater.inflate(ThemeManager.getInstance().getFacebook(), container, false);

    LoginButton authButton = (LoginButton) view.findViewById(R.id.authButton);
    authButton.setFragment(this);
    authButton.setPublishPermissions(PERMISSIONS);
    authButton.setApplicationId(getString(R.string.facebook_app_id));

    return view;
     // Get View method for inflate a View.
}}