Facebook登录在Android中显示错误消息

Question

我正在Android应用上进行Facebook集成。它在某些设备上工作正常，但在某些设备上它无法正常工作并给我错误信息：

以下是代码：

 private UiLifecycleHelper uiHelper;

    private Session.StatusCallback callback = new Session.StatusCallback() {
        @Override
        public void call(Session session, SessionState state, Exception exception) {
            onSessionStateChange(session, state, exception);
        }
    };



    private void onSessionStateChange(Session session, SessionState state, Exception exception) {
        if (   exception instanceof FacebookOperationCanceledException ||
                exception instanceof FacebookAuthorizationException) 
        {
                new AlertDialog.Builder(MainWindow.this)
                    .setTitle("cancel")
                    .setMessage("your permission has expired.")
                    .setPositiveButton("ok", null)
                    .show();

        } 

    }




private void onClickFacebookRequest() 
 {
        if (session.isOpened()) 
        {
            sendRequests();

        } else {
            StatusCallback callback = new StatusCallback() {
                public void call(Session session, SessionState state, Exception exception) {
                    if (exception != null) {
                        new AlertDialog.Builder(MainWindow.this)
                                .setTitle(R.string.login_failed_dialog_title)
                                .setMessage(exception.getMessage())
                                .setPositiveButton(R.string.ok_button, null)
                                .show();
                     session = createSession();
                    }
                }
            };
            pendingRequest = true;


            session.openForRead(new Session.OpenRequest(this).setCallback(callback));
        }
    }
 private static final List<String> PERMISSIONS = Arrays.asList("publish_actions");
 private static final String PENDING_PUBLISH_KEY = "pendingPublishReauthorization";

 private void sendRequests() 
 {

     List<String> permissions = quytechApps.getSession().getPermissions();
        if (!isSubsetOf(PERMISSIONS, permissions)) {
            pendingRequest = true;
            Session.NewPermissionsRequest newPermissionsRequest = new Session
                    .NewPermissionsRequest(this, PERMISSIONS);
            session.requestNewPublishPermissions(newPermissionsRequest);
            return;
        }

        showValidationDialog("Please Wait.posting Data on Facebook");
        Bitmap image = BitmapFactory.decodeResource(this.getResources(), R.drawable.splash_screen_final4);

        ByteArrayOutputStream stream = new ByteArrayOutputStream();
        image.compress(Bitmap.CompressFormat.PNG, 100, stream);
        byte[] byteArray = stream.toByteArray();

        Bundle postParams=new Bundle();
        postParams.putByteArray("photo",byteArray);
        postParams.putString("message", "Hi Friends I am using Twinqli Chat App.");

        Request request = new Request(Session.getActiveSession(), "me/photos", postParams, HttpMethod.POST, new Request.Callback()
        {

            @Override
            public void onCompleted(Response response) {
                // TODO Auto-generated method stub
                // showPublishResult(getString(R.string.photo_post), response.getGraphObject(), response.getError());
            if(response.getError() == null)
            {
                Log.d("GraphApiSample.java Sucesses","sucess");
                dismissValidatingDialog();
            }
            else
            {
                dismissValidatingDialog();
                session.closeAndClearTokenInformation();
                //quytechApps.getSession().
                //quytechApps.setSession(null);
//                  Log.d("GraphApiSample.java",""+response.getError().getErrorMessage());
            }

            }

        });
        request.executeAsync();
 }

 private boolean isSubsetOf(Collection<String> subset, Collection<String> superset) {
        for (String string : subset) {
            if (!superset.contains(string)) {
                return false;
            }
        }
        return true;
    }

 static final String applicationId = "390611174384274";
 boolean pendingRequest;
 static final String PENDING_REQUEST_BUNDLE_KEY = "com.facebook.samples.graphapi:PendingRequest";

 private Session createSession() 
 {
        Session activeSession = Session.getActiveSession();
        if (activeSession == null || activeSession.getState().isClosed()) 
        {
            activeSession = new Session.Builder(this).setApplicationId(applicationId).build();
            Session.setActiveSession(activeSession);
        }
        return activeSession;
    }

 public void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (qsession.onActivityResult(this, requestCode, resultCode, data) &&
                pendingRequest &&
                session.getState().isOpened()) {
            sendRequests();
        }
    }

    @Override
    protected void onRestoreInstanceState(Bundle savedInstanceState) {
        super.onRestoreInstanceState(savedInstanceState);

        pendingRequest = savedInstanceState.getBoolean(PENDING_REQUEST_BUNDLE_KEY, pendingRequest);
    }

    @Override
    protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);

        outState.putBoolean(PENDING_REQUEST_BUNDLE_KEY, pendingRequest);
    }

有人能告诉我代码中有什么问题吗？

Answer 1

当您的手机中的 Facebook应用未更新时，通常会出现此问题，因此请更新后再进行检查。 它对我有用，希望它也适合你。

修改 要检查哈希键，请将其放在 onCreate 方法

中

 PackageInfo info;
try {
    info = getPackageManager().getPackageInfo("com.example.yourpackagename", PackageManager.GET_SIGNATURES);
    for (Signature signature : info.signatures) {
        MessageDigest md;
        md = MessageDigest.getInstance("SHA");
        md.update(signature.toByteArray());
        String something = new String(Base64.encode(md.digest(), 0));
        //String something = new String(Base64.encodeBytes(md.digest()));
        Log.e("hash key", something);
    }
} catch (NameNotFoundException e1) {
    Log.e("name not found", e1.toString());
} catch (NoSuchAlgorithmException e) {
    Log.e("no such an algorithm", e.toString());
} catch (Exception e) {
    Log.e("exception", e.toString());
}