null object reference using RxJava and Retrofit [Android]

null object reference using RxJava and Retrofit [Android] - android

I'm buliding a simple android app, and i got this error when i try to send data to API. I use RxJava and Retrofit, and I use Model View Presenter.
I got this error "btnservice is a null object reference"
I always got btnservice null, please help to solve this.
Thank you
This the JSON
request:
{
name: '',
mobile: '',
email: ''
}
This my BaseActivtiy
public abstract class BaseActivity extends AppCompatActivity {
#BindString(R.string.loading)
public String loading;
#BindInt(R.integer.success_code)
public int successCode;
#BindInt(R.integer.success_activication_code)
public int activicationSuccessCode;
protected BTNService btnService;
protected abstract int getLayout();
private ProgressDialog progressDialog;
private CompositeSubscription subscriptions;
protected RxBus bus;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(getLayout());
Icepick.restoreInstanceState(this, savedInstanceState);
ButterKnife.bind(this);
this.progressDialog = new ProgressDialog(this);
}
#Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
Icepick.saveInstanceState(this, outState);
}
#Override
protected void onStart() {
super.onStart();
this.subscriptions = new CompositeSubscription();
}
#Override
public void onStop() {
super.onStop();
}
#Override
protected void onDestroy() {
super.onDestroy();
this.progressDialog.dismiss();
}
public BTNService getBTNService() {
return btnService;
}
public RxBus getBus() {
return bus;
}
public void showProgressDialog(String message) {
if (progressDialog != null) {
progressDialog.setMessage(message);
progressDialog.show();
}
}
public void dismissProgressDialog() {
progressDialog.hide();
}
public boolean isFragmentNotNull(String tag) {
if (getSupportFragmentManager().findFragmentByTag(tag) != null) {
return true;
} else {
return false;
}
}
public boolean isFragmentVisible(String tag) {
if (isFragmentNotNull(tag)
&& getSupportFragmentManager().findFragmentByTag(tag).isVisible()) {
return true;
} else {
return false;
}
}
}
This my BaseFragment
public abstract class BaseFragment extends Fragment implements Validator.ValidationListener {
#BindString(R.string.loading)
public String loading;
#BindInt(R.integer.success_code)
public int successCode;
#BindInt(R.integer.success_activication_code)
public int activicationSuccessCode;
#BindString(R.string.connection_error)
public String connectionError;
protected abstract int getLayout();
protected Validator validator;
private CompositeSubscription subscriptions;
protected RxBus bus;
#Override
public void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public void onActivityCreated(#Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
this.bus = ((BaseActivity) getActivity()).getBus();
}
#Override
public void onStart() {
super.onStart();
this.subscriptions = new CompositeSubscription();
/* this.subscriptions
.add(bus.toObserverable()
.subscribe(new Action1<Object>() {
#Override
public void call(Object event) {
if (event instanceof RxBusObject) {
RxBusObject busObject = (RxBusObject) event;
busHandler();
}
}
})
);*/
}
#Override
public void onStop() {
super.onStop();
this.subscriptions.clear();
}
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(getLayout(), container, false);
ButterKnife.bind(this, view);
return view;
}
public RxBus getBus() {
return this.bus;
}
#Override
public void onValidationSucceeded() {
}
#Override
public void onValidationFailed(List<ValidationError> errors) {
for (ValidationError error : errors) {
View view = error.getView();
String message = error.getCollatedErrorMessage(getActivity());
if (view instanceof EditText) {
EditText et = ((EditText) view);
et.setError(message);
et.requestFocus();
} else {
Toast.makeText(getActivity(), message, Toast.LENGTH_LONG).show();
}
}
}
public void showSuccessDialog(String message, final Boolean isFinishActivity) {
new MaterialDialog.Builder(getActivity())
.iconRes(R.mipmap.ic_launcher)
.title(getString(R.string.success).toUpperCase())
.titleColor(Color.WHITE)
.content(message)
.contentColor(Color.WHITE)
.positiveText(R.string.ok)
.positiveColor(Color.WHITE)
.onPositive(new MaterialDialog.SingleButtonCallback() {
#Override
public void onClick(MaterialDialog dialog, DialogAction which) {
if (isFinishActivity) {
getActivity().finish();
}
}
})
.cancelable(false)
.show();
}
public void showProgressDialog(String message) {
((BaseActivity) getActivity()).showProgressDialog(message);
}
public Validator getValidator() {
return validator;
}
public BTNService.Api getApi() {
return ((BaseActivity) getActivity()).getBTNService().getApi();
}
public void dismissProgressDialog() {
((BaseActivity) getActivity()).dismissProgressDialog();
}
}
This my Retrofit Class
public BTNService(Context context) {
if (retrofit==null) {
Retrofit retrofit = new Retrofit.Builder()
.client(provideOkHttpClient(context))
.baseUrl(BASE_URL)
.build();
this.api = retrofit.create(Api.class);
}
}
private OkHttpClient provideOkHttpClient(final Context context) {
HttpLoggingInterceptor httpLoggingInterceptorinterceptor = new HttpLoggingInterceptor();
httpLoggingInterceptorinterceptor.setLevel(HttpLoggingInterceptor.Level.BODY);
OkHttpClient.Builder httpClient = new OkHttpClient.Builder();
httpClient.addInterceptor(httpLoggingInterceptorinterceptor);
httpClient.addInterceptor(new Interceptor() {
#Override
public Response intercept(Chain chain) throws IOException {
Request request = chain.request();
Response response = chain.proceed(request);
return response;
}
});
return httpClient.build();
}
public Api getApi() {
return api;
}
public interface Api {
#POST(PORTAL_URL + "customer/register")
Observable<SignUpResponse> regsiterCustomer(#Path("email") String Email,
#Path("name") String Name,
#Path("mobile") String PhoneNumber);
}
and this my Presenter
public class SignUpPresenter {
private SignUpFragment fragment;
public SignUpPresenter(SignUpFragment fragment) {
this.fragment = fragment;
}
public SignUpRequest constructSignUpRequest() {
SignUpRequest request = new SignUpRequest();
request.setName(getAndTrimValueFromEditText(fragment.etName));
request.setEmail(getAndTrimValueFromEditText(fragment.etEmail));
request.setMobile(getAndTrimValueFromEditText(fragment.etPhone));
return request;
}
private String getAndTrimValueFromEditText(EditText e) {
return e.getText().toString().trim();
}
void signup (){
this.register(constructSignUpRequest());
}
void register(final SignUpRequest signUpRequest) {
fragment.showProgressDialog(fragment.loading);
fragment.getApi().regsiterCustomer(
signUpRequest.getName(),
signUpRequest.getEmail(),
signUpRequest.getMobile())
.subscribeOn(Schedulers.io())
.subscribe(new Observer<GenericResponse>() {
#Override
public void onCompleted() {
}
#Override
public void onError(Throwable e) {
fragment.dismissProgressDialog();
Timber.e(e.getLocalizedMessage());
Toast.makeText(fragment.getContext(), fragment.connectionError, Toast.LENGTH_SHORT).show();
}
#Override
public void onNext(GenericResponse genericResponse) {
fragment.dismissProgressDialog();
Toast.makeText(fragment.getContext(), genericResponse.getInfo(), Toast.LENGTH_SHORT).show();
if (genericResponse.getCode() == fragment.successCode) {
/*fragment.gotoActivationCodeActivity(SignUpRequest.getEmail(), SignUpRequest.get());*/
fragment.gotoQuestionActivity(signUpRequest.getEmail(), signUpRequest.getEmail(), signUpRequest.getMobile());
}
}
});
}

public static <T> Function<BaseResponse<T>, Observable<T>> convertDataFlatMap() {
return new Function<BaseResponse<T>, Observable<T>>() {
#Override
public Observable<T> apply(BaseResponse<T> response) {
if (!Constants.SUCCESS_CODE.equals(response.getStatus_code())) {
BaseErrorResponse baseErrorResponse = new BaseErrorResponse();
baseErrorResponse.setError(response.getStatus_code(),
response.getStatus());
return Observable.error(BaseException.toServerError(baseErrorResponse));
}
T data = response.getData();
if (null == data) {
return Observable.empty();
}
return Observable.just(response.getData());
}
};
}
I'm using Rxjava 2, Maybe useful for you.

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The repository: --> fetchResponse() takes Viewmodel's MutableLiveData as parameter and uses it to update its value and then trigger View to change its UI.
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The viewModel:
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The View:
...
#Override
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Api
public interface TodoApi {
#GET("todos/")
Call<List<Todo>> getTodos();
#GET("todos/{id}")
Call<Todo> getTodo(#Path("id") long id);
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Respository
public class TodoRepository {
private static final String TAG = "TodoRepository";
private static final TodoRepository ourInstance = new TodoRepository();
private TodoApi api;
private MutableLiveData<List<Todo>> todoListLiveData = new MutableLiveData<>();
private MutableLiveData<Todo> todoLiveData = new MutableLiveData<>();
public static TodoRepository getInstance() {
return ourInstance;
}
private TodoRepository() {
api = ApiBuilder.create(TodoApi.class);
}
public LiveData<List<Todo>> getTodos() {
api.getTodos().enqueue(new Callback<List<Todo>>() {
#Override
public void onResponse(#NonNull Call<List<Todo>> call, #NonNull Response<List<Todo>> response) {
todoListLiveData.setValue(response.body());
}
#Override
public void onFailure(#NonNull Call<List<Todo>> call, #NonNull Throwable t) {
Log.d(TAG, "onFailure: failed to fetch todo list from server");
}
});
return todoListLiveData;
}
public LiveData<Todo> getTodo(long id) {
api.getTodo(id).enqueue(new Callback<Todo>() {
#Override
public void onResponse(#NonNull Call<Todo> call, #NonNull Response<Todo> response) {
todoLiveData.setValue(response.body());
}
#Override
public void onFailure(#NonNull Call<Todo> call, #NonNull Throwable t) {
Log.d(TAG, "onFailure: failed to get todo");
}
});
return todoLiveData;
}
}
ViewModel
public class MainActivityViewModel extends ViewModel {
private static final String TAG = "MainActivityViewModel";
private TodoRepository repository = TodoRepository.getInstance();
private MutableLiveData<Boolean> isLoading = new MutableLiveData<>();
private LiveData<List<Todo>> todoLiveData;
public MainActivityViewModel() {
super();
isLoading.setValue(true);
todoLiveData = repository.getTodos();
}
#Override
protected void onCleared() {
super.onCleared();
}
public MutableLiveData<Boolean> getIsLoading() {
return isLoading;
}
public LiveData<List<Todo>> getTodoLiveData() {
return todoLiveData;
}
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#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
todoListRecyclerView = findViewById(R.id.todo_recycler_view);
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#Override
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I am working with paging library and I am struggling with the LiveData PagedList.
My paginated list is working properly but there is an scenario where it is not. I have RecyclerView + SwipeRefreshLayout when data is already shown in the list and I disable network and I try to swipe refresh all the data in the list is removed. How can I avoid that?
public class InterestsViewModel extends ViewModel {
private LiveData<PagedList<InterestItem>> mListInterests;
private CompositeDisposable mCompositeDisposable = new CompositeDisposable();
private static final int PAGE_SIZE = 15;
private GroupsInterestsDataSourceFactory mGroupsInterestsDataSourceFactory;
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Executor executor = Executors.newFixedThreadPool(5);
mGroupsInterestsDataSourceFactory = new GroupsInterestsDataSourceFactory(mCompositeDisposable);
PagedList.Config config = new PagedList.Config.Builder()
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mListInterests = new LivePagedListBuilder<>(mGroupsInterestsDataSourceFactory,config)
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public void retry() {
mGroupsInterestsDataSourceFactory.getGroupsInterestsDataSource().getValue().retry();
}
public void refresh() {
mGroupsInterestsDataSourceFactory.getGroupsInterestsDataSource().getValue().invalidate();
}
public LiveData<NetworkState> getNetworkState() {
return Transformations.switchMap(mGroupsInterestsDataSourceFactory.getGroupsInterestsDataSource(), new Function<GroupsInterestsDataSource, LiveData<NetworkState>>() {
#Override
public LiveData<NetworkState> apply(GroupsInterestsDataSource input) {
return input.getNetworkState();
}
});
}
public LiveData<NetworkState> getRefreshState() {
return Transformations.switchMap(mGroupsInterestsDataSourceFactory.getGroupsInterestsDataSource(), new Function<GroupsInterestsDataSource, LiveData<NetworkState>>() {
#Override
public LiveData<NetworkState> apply(GroupsInterestsDataSource input) {
return input.getInitialLoad();
}
});
}
public LiveData<PagedList<InterestItem>> getListInterests() {
return mListInterests;
}
#Override
protected void onCleared() {
super.onCleared();
mCompositeDisposable.dispose();
}
}
From the the fragment:
private void initAdapter() {
mAdapter = new InterestsAdapter(this);
mListInterest.setAdapter(mAdapter);
mInterestsViewModel.getListInterests().observe(this, new Observer<PagedList<InterestItem>>() {
#Override
public void onChanged(#Nullable PagedList<InterestItem> interestItems) {
mAdapter.submitList(interestItems);
}
});
mInterestsViewModel.getNetworkState().observe(this, new Observer<NetworkState>() {
#Override
public void onChanged(#Nullable NetworkState networkState) {
mAdapter.setNetworkState(networkState);
}
});
mInterestsViewModel.getRefreshState().observe(this, new Observer<NetworkState>() {
#Override
public void onChanged(#Nullable NetworkState networkState) {
if (networkState != null) {
if (mAdapter.getCurrentList() != null) {
if (networkState.getStatus()
== NetworkState.LOADED.getStatus() || networkState.getStatus()
== Status.FAILED)
mIsRefreshing = false;
if (mAdapter.getCurrentList().size() > 0) {
mSwipeRLInterests.setRefreshing(networkState.getStatus()
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#Override
public void retry() {
mInterestsViewModel.retry();
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public void onRefresh() {
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mInterestsViewModel.refresh();
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I am using quickblox for my android application. I am able to register, login user, even add custom objects and retrieve them from the quick-blox server, but in chatting listing screen my count is coming wrong.
I am getting issue with unread count
Here is my code flow:-
public class ConversationFragment extends Fragment implements Observer, DialogsManager.ManagingDialogsCallbacks {
ConversationViewModel conversationViewModel;
FragmentConversationBinding binding;
QBChatDialogMessageListener allDialogsMessagesListener;
SystemMessagesListener systemMessagesListener;
QBSystemMessagesManager systemMessagesManager;
QBIncomingMessagesManager incomingMessagesManager;
private DialogsManager dialogsManager;
public ConversationFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
binding = DataBindingUtil.inflate(inflater, R.layout.fragment_conversation, container, false);
getActivity().getWindow().setBackgroundDrawableResource(R.drawable.bg_img);
View view = binding.getRoot();
systemMessagesListener = new SystemMessagesListener();
dialogsManager = new DialogsManager();
return view;
}
private void setUpModel() {
Bundle mBundle = getArguments();
if (mBundle != null) {
conversationViewModel = new ConversationViewModel(getActivity(), binding, getArguments().getString("DialogIdData"));
} else {
conversationViewModel = new ConversationViewModel(getActivity(), binding, "");
}
binding.setConversationViewModel(conversationViewModel);
setUpObserver(conversationViewModel);
}
private void setUpObserver(ConversationViewModel observer) {
observer.addObserver(this);
}
#Override
public void update(Observable o, Object arg) {
}
#Override
public void onDestroy() {
super.onDestroy();
}
#Override
public void onResume() {
super.onResume();
setUpModel();
}
#Override
public void onPause() {
super.onPause();
unregisterQbChatListeners();
}
public void unregisterQbChatListeners() {
if (incomingMessagesManager != null) {
incomingMessagesManager.removeDialogMessageListrener(allDialogsMessagesListener);
}
if (systemMessagesManager != null) {
systemMessagesManager.removeSystemMessageListener(systemMessagesListener);
}
dialogsManager.removeManagingDialogsCallbackListener(this);
}
#Override
public void onDialogCreated(QBChatDialog chatDialog) {
}
#Override
public void onDialogUpdated(String chatDialog) {
}
#Override
public void onNewDialogLoaded(QBChatDialog chatDialog) {
}
private class SystemMessagesListener implements QBSystemMessageListener {
#Override
public void processMessage(final QBChatMessage qbChatMessage) {
dialogsManager.onSystemMessageReceived(qbChatMessage);
}
#Override
public void processError(QBChatException e, QBChatMessage qbChatMessage) {
}
}
private BroadcastReceiver mNotificationReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
}
};
}
Here is my Fragment viewModel code :-
public class ConversationViewModel extends Observable implements DialogsManager.ManagingDialogsCallbacks {
private static final int REQUEST_DIALOG_ID_FOR_UPDATE = 165;
public Context mContext;
FragmentConversationBinding binding;
private ActionMode currentActionMode;
public QBRequestGetBuilder requestBuilder;
private int skipRecords = 0;
private DialogsAdapter dialogsAdapter;
private QBChatDialogMessageListener allDialogsMessagesListener;
private SystemMessagesListener systemMessagesListener;
private QBSystemMessagesManager systemMessagesManager;
private QBIncomingMessagesManager incomingMessagesManager;
private DialogsManager dialogsManager;
private QBUser currentUser;
private String id;
public ConversationViewModel(Context mContext, FragmentConversationBinding binding, String Dialogid) {
this.mContext = mContext;
this.binding = binding;
this.id = Dialogid;
initUI();
}
public void initUI() {
allDialogsMessagesListener = new AllDialogsMessageListener();
systemMessagesListener = new SystemMessagesListener();
dialogsManager = new DialogsManager();
currentUser = ChatHelper.getCurrentUser();
initList();
registerQbChatListeners();
if (QbDialogHolder.getInstance().getDialogs().size() > 0) {
loadDialogsFromQb(true, true);
} else {
loadDialogsFromQb(false, true);
}
if (!id.isEmpty()) {
loadUpdatedDialog(id);
id = "";
} else {
updateDialogsList();
}
}
public void initList() {
dialogsAdapter = new DialogsAdapter(mContext, new ArrayList<>(QbDialogHolder.getInstance().getDialogs().values()));
binding.listDialogsChats.setAdapter(dialogsAdapter);
binding.listDialogsChats.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
QBChatDialog selectedDialog = (QBChatDialog) parent.getItemAtPosition(position);
if (currentActionMode == null) {
ChatActivity.startForResult(((Activity) mContext), REQUEST_DIALOG_ID_FOR_UPDATE, selectedDialog);
} else {
dialogsAdapter.toggleSelection(selectedDialog);
}
}
});
binding.listDialogsChats.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
#Override
public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
QBChatDialog selectedDialog = (QBChatDialog) parent.getItemAtPosition(position);
dialogsAdapter.selectItem(selectedDialog);
return true;
}
});
requestBuilder = new QBRequestGetBuilder();
binding.swipyRefreshLayout.setOnRefreshListener(new SwipyRefreshLayout.OnRefreshListener() {
#Override
public void onRefresh(SwipyRefreshLayoutDirection direction) {
requestBuilder.setSkip(skipRecords += ChatHelper.DIALOG_ITEMS_PER_PAGE);
loadDialogsFromQb(true, false);
}
});
}
private void loadUpdatedDialog(String dialogId) {
ChatHelper.getInstance().getDialogById(dialogId, new QbEntityCallbackImpl<QBChatDialog>() {
#Override
public void onSuccess(QBChatDialog result, Bundle bundle) {
QbDialogHolder.getInstance().addDialog(result);
updateDialogsAdapter();
}
#Override
public void onError(QBResponseException e) {
}
});
}
public void updateDialogsList() {
requestBuilder.setSkip(skipRecords = 0);
loadDialogsFromQb(true, true);
}
#Override
public void onDialogCreated(QBChatDialog chatDialog) {
updateDialogsAdapter();
}
#Override
public void onDialogUpdated(String chatDialog) {
updateDialogsAdapter();
}
#Override
public void onNewDialogLoaded(QBChatDialog chatDialog) {
updateDialogsAdapter();
}
private void registerQbChatListeners() {
incomingMessagesManager = QBChatService.getInstance().getIncomingMessagesManager();
systemMessagesManager = QBChatService.getInstance().getSystemMessagesManager();
if (incomingMessagesManager != null) {
incomingMessagesManager.addDialogMessageListener(allDialogsMessagesListener != null
? allDialogsMessagesListener : new AllDialogsMessageListener());
}
if (systemMessagesManager != null) {
systemMessagesManager.addSystemMessageListener(systemMessagesListener != null
? systemMessagesListener : new SystemMessagesListener());
}
dialogsManager.addManagingDialogsCallbackListener(this);
}
private class SystemMessagesListener implements QBSystemMessageListener {
#Override
public void processMessage(final QBChatMessage qbChatMessage) {
dialogsManager.onSystemMessageReceived(qbChatMessage);
}
#Override
public void processError(QBChatException e, QBChatMessage qbChatMessage) {
}
}
private class AllDialogsMessageListener extends QbChatDialogMessageListenerImp {
#Override
public void processMessage(final String dialogId, final QBChatMessage qbChatMessage, Integer senderId) {
if (!senderId.equals(ChatHelper.getCurrentUser().getId())) {
dialogsManager.onGlobalMessageReceived(dialogId, qbChatMessage);
}
}
}
public void updateDialogsAdapter() {
dialogsAdapter.updateList(new ArrayList<>(QbDialogHolder.getInstance().getDialogs().values()));
}
public void loadDialogsFromQb(final boolean silentUpdate, final boolean clearDialogHolder) {
if (!silentUpdate) {
binding.progressDialogs.setVisibility(View.VISIBLE);
}
ChatHelper.getInstance().getDialogs(requestBuilder, new QBEntityCallback<ArrayList<QBChatDialog>>() {
#Override
public void onSuccess(ArrayList<QBChatDialog> dialogs, Bundle bundle) {
binding.progressDialogs.setVisibility(View.GONE);
binding.swipyRefreshLayout.setRefreshing(false);
if (clearDialogHolder) {
QbDialogHolder.getInstance().clear();
}
QbDialogHolder.getInstance().addDialogs(dialogs);
updateDialogsAdapter();
}
#Override
public void onError(QBResponseException e) {
binding.progressDialogs.setVisibility(View.GONE);
binding.swipyRefreshLayout.setRefreshing(false);
Toast.makeText(mContext, e.getMessage(), Toast.LENGTH_SHORT).show();
}
});
}
}
Here is my Chat Activity:-
public class ChatActivity extends BindingActivity<ActivityChatBinding> implements OnImagePickedListener {
ChatViewModel chatViewModel;
public static final int REQUEST_CODE_ATTACHMENT = 721;
public static final String EXTRA_DIALOG_ID = "dialogId";
#Override
protected int getLayoutId() {
return R.layout.activity_chat;
}
public static void startForResult(Activity activity, int code, QBChatDialog dialogId) {
Intent intent = new Intent(activity, ChatActivity.class);
intent.putExtra(ChatActivity.EXTRA_DIALOG_ID, dialogId);
activity.startActivityForResult(intent, code);
}
#Override
public void setInitBinding() {
getWindow().setBackgroundDrawableResource(R.drawable.bg_img);
chatViewModel = new ChatViewModel(this, binding);
binding.setChatViewModel(chatViewModel);
}
#Override
protected void setUpObserver() {
chatViewModel.addObserver(this);
}
#Override
public void update(Observable o, Object arg) {
}
#Override
public void onSaveInstanceState(Bundle outState, PersistableBundle outPersistentState) {
super.onSaveInstanceState(outState, outPersistentState);
}
#Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
}
#Override
public void onBackPressed() {
binding.getChatViewModel().releaseChat();
binding.getChatViewModel().sendDialogId();
super.onBackPressed();
}
#Override
public void onImagePicked(int requestCode, File file) {
switch (requestCode) {
case REQUEST_CODE_ATTACHMENT:
binding.getChatViewModel().attachmentPreviewAdapter.add(file);
break;
}
}
#Override
public void onImagePickError(int requestCode, Exception e) {
Toast.makeText(this, e.toString(), Toast.LENGTH_SHORT).show();
}
#Override
public void onImagePickClosed(int requestCode) {
}
}
Chat Activity View Model :-
public class ChatViewModel extends Observable {
public Context mContext;
ActivityChatBinding binding;
public static final String TAG = ChatActivity.class.getSimpleName();
public static final int REQUEST_CODE_ATTACHMENT = 721;
public static final String PROPERTY_SAVE_TO_HISTORY = "save_to_history";
public static final String EXTRA_DIALOG_ID = "dialogId";
public ChatAdapter chatAdapter;
public AttachmentPreviewAdapter attachmentPreviewAdapter;
public QBChatDialog qbChatDialog;
public ArrayList<QBChatMessage> unShownMessages;
public int skipPagination = 0;
public ChatMessageListener chatMessageListener;
QBPrivacyList qbPrivacyList;
public static boolean mBlock;
public static int userId, recipientId;
public QBPrivacyListsManager privacyListsManager;
public ObservableField<String> chatMessage = new ObservableField<>("");
public ChatViewModel(Context mContext, ActivityChatBinding binding) {
this.mContext = mContext;
this.binding = binding;
Log.v(TAG, "onCreate ChaActivity on Thread ID = " + Thread.currentThread().getId());
qbChatDialog = (QBChatDialog) ((Activity) mContext).getIntent().getSerializableExtra(EXTRA_DIALOG_ID);
Log.v(TAG, "deserialized dialog = " + qbChatDialog);
qbChatDialog.initForChat(QBChatService.getInstance());
chatMessageListener = new ChatMessageListener();
qbPrivacyList = new QBPrivacyList();
privacyListsManager = QBChatService.getInstance().getPrivacyListsManager();
qbChatDialog.addMessageListener(chatMessageListener);
initViews();
initChat();
}
public void initViews() {
try {
recipientId = qbChatDialog.getRecipientId();
userId = qbChatDialog.getUserId();
getPrivacyList();
} catch (SmackException.NotConnectedException e) {
e.printStackTrace();
} catch (XMPPException.XMPPErrorException e) {
e.printStackTrace();
} catch (SmackException.NoResponseException e) {
e.printStackTrace();
}
attachmentPreviewAdapter = new AttachmentPreviewAdapter(mContext,
new AttachmentPreviewAdapter.OnAttachmentCountChangedListener() {
#Override
public void onAttachmentCountChanged(int count) {
binding.attachmentContainer.setVisibility(count == 0 ? View.GONE : View.VISIBLE);
}
},
new AttachmentPreviewAdapter.OnAttachmentUploadErrorListener() {
#Override
public void onAttachmentUploadError(QBResponseException e) {
Toast.makeText(mContext, e.toString(), Toast.LENGTH_SHORT).show();
}
});
binding.attachmentAdapter.setAdapter(attachmentPreviewAdapter);
}
public void onAttachmentsClick(View view) {
new ImagePickHelper().pickAnImage(((FragmentActivity) mContext), REQUEST_CODE_ATTACHMENT);
}
private void initChat() {
switch (qbChatDialog.getType()) {
case PRIVATE:
loadDialogUsers();
break;
default:
Toaster.shortToast(String.format("%s %s", getString(R.string.chat_unsupported_type), qbChatDialog.getType().name()));
((Activity) mContext).finish();
break;
}
}
public void loadDialogUsers() {
ChatHelper.getInstance().getUsersFromDialog(qbChatDialog, new QBEntityCallback<ArrayList<QBUser>>() {
#Override
public void onSuccess(ArrayList<QBUser> users, Bundle bundle) {
String chatName = QbDialogUtils.getDialogName(qbChatDialog);
binding.dialogName.setText(chatName);
loadChatHistory();
}
#Override
public void onError(QBResponseException e) {
Toast.makeText(mContext, e.toString(), Toast.LENGTH_SHORT).show();
}
});
}
public void loadChatHistory() {
ChatHelper.getInstance().loadChatHistory(qbChatDialog, skipPagination, new QBEntityCallback<ArrayList<QBChatMessage>>() {
#Override
public void onSuccess(ArrayList<QBChatMessage> messages, Bundle args) {
Collections.reverse(messages);
if (chatAdapter == null) {
chatAdapter = new ChatAdapter(mContext, qbChatDialog, messages);
chatAdapter.setPaginationHistoryListener(new PaginationHistoryListener() {
#Override
public void downloadMore() {
loadChatHistory();
}
});
chatAdapter.setOnItemInfoExpandedListener(new ChatAdapter.OnItemInfoExpandedListener() {
#Override
public void onItemInfoExpanded(final int position) {
if (isLastItem(position)) {
((Activity) mContext).runOnUiThread(new Runnable() {
#Override
public void run() {
binding.listChat.setSelection(position);
}
});
} else {
binding.listChat.smoothScrollToPosition(position);
}
}
private boolean isLastItem(int position) {
return position == chatAdapter.getCount() - 1;
}
});
if (unShownMessages != null && !unShownMessages.isEmpty()) {
List<QBChatMessage> chatList = chatAdapter.getList();
for (QBChatMessage message : unShownMessages) {
if (!chatList.contains(message)) {
chatAdapter.add(message);
}
}
}
binding.listChat.setAdapter(chatAdapter);
binding.listChat.setAreHeadersSticky(false);
binding.listChat.setDivider(null);
} else {
chatAdapter.addList(messages);
binding.listChat.setSelection(messages.size());
}
binding.progressBar.setVisibility(View.GONE);
}
#Override
public void onError(QBResponseException e) {
binding.progressBar.setVisibility(View.GONE);
skipPagination -= ChatHelper.CHAT_HISTORY_ITEMS_PER_PAGE;
Toast.makeText(mContext, e.toString(), Toast.LENGTH_SHORT).show();
}
});
skipPagination += ChatHelper.CHAT_HISTORY_ITEMS_PER_PAGE;
QBRestChatService.markMessagesAsRead(qbChatDialog.getDialogId(), null);
}
public class ChatMessageListener extends QbChatDialogMessageListenerImp {
#Override
public void processMessage(String s, QBChatMessage qbChatMessage, Integer integer) {
showMessage(qbChatMessage);
}
}
public void showMessage(QBChatMessage message) {
if (chatAdapter != null) {
chatAdapter.add(message);
scrollMessageListDown();
} else {
if (unShownMessages == null) {
unShownMessages = new ArrayList<>();
}
unShownMessages.add(message);
}
}
public void scrollMessageListDown() {
binding.listChat.setSelection(binding.listChat.getCount() - 1);
}
public void onSendChatClick(View view) {
int totalAttachmentsCount = attachmentPreviewAdapter.getCount();
Collection<QBAttachment> uploadedAttachments = attachmentPreviewAdapter.getUploadedAttachments();
if (!uploadedAttachments.isEmpty()) {
if (uploadedAttachments.size() == totalAttachmentsCount) {
for (QBAttachment attachment : uploadedAttachments) {
sendChatMessage(null, attachment);
}
} else {
Toaster.shortToast(R.string.chat_wait_for_attachments_to_upload);
}
}
String text = binding.getChatViewModel().chatMessage.get().trim();
if (!TextUtils.isEmpty(text)) {
sendChatMessage(text, null);
}
}
public void sendChatMessage(String text, QBAttachment attachment) {
QBChatMessage chatMessage = new QBChatMessage();
if (attachment != null) {
chatMessage.addAttachment(attachment);
} else {
chatMessage.setBody(text);
}
chatMessage.setProperty(PROPERTY_SAVE_TO_HISTORY, "1");
chatMessage.setDateSent(System.currentTimeMillis() / 1000);
chatMessage.setMarkable(true);
if (!QBDialogType.PRIVATE.equals(qbChatDialog.getType()) && !qbChatDialog.isJoined()) {
Toaster.shortToast("You're still joining a group chat, please wait a bit");
return;
}
try {
qbChatDialog.sendMessage(chatMessage);
if (QBDialogType.PRIVATE.equals(qbChatDialog.getType())) {
showMessage(chatMessage);
}
if (attachment != null) {
attachmentPreviewAdapter.remove(attachment);
} else {
binding.getChatViewModel().chatMessage.set("");
}
} catch (SmackException.NotConnectedException e) {
Log.w(TAG, e);
Toaster.shortToast("Can't send a message, You are not connected to chat");
}
}
public void leaveGroupDialog() {
try {
ChatHelper.getInstance().leaveChatDialog(qbChatDialog);
} catch (XMPPException | SmackException.NotConnectedException e) {
Log.w(TAG, e);
}
}
public void releaseChat() {
qbChatDialog.removeMessageListrener(chatMessageListener);
if (!QBDialogType.PRIVATE.equals(qbChatDialog.getType())) {
leaveGroupDialog();
}
}
public void sendDialogId() {
Intent result = new Intent();
result.putExtra(EXTRA_DIALOG_ID, qbChatDialog.getDialogId());
((Activity) mContext).setResult(RESULT_OK, result);
}
public void finishActivity(View view) {
((Activity) mContext).finish();
}
public void clickButtonBlock(View view) {
AppUtils.dialog(mContext);
if (mBlock) {
onClickUnblock();
} else {
onClickBlock();
}
}
public void getPrivacyList() throws SmackException.NotConnectedException, XMPPException.XMPPErrorException, SmackException.NoResponseException {
QBPrivacyListsManager privacyListsManager = QBChatService.getInstance().getPrivacyListsManager();
QBPrivacyList privacyList = privacyListsManager.getPrivacyList("public");
List<QBPrivacyListItem> items = privacyList.getItems();
int i;
for (i = 0; i < privacyList.getItems().size(); i++) {
QBPrivacyListItem item = items.get(i);
String valueForType = item.getValueForType();
String[] splitvalueType = valueForType.split("-");
String blockId = splitvalueType[0];
if (blockId.equalsIgnoreCase(String.valueOf(recipientId))) {
mBlock = true;
binding.tvBlock.setText("Unblock");
break;
} else {
binding.tvBlock.setText("Block");
}
}
}
}
The problem is chatDialog.getUnreadMessageCount() giving me count 2 when I once enter in chat room and come back to my chat listing page.
Description on issue:-
Example:-
I have installed my application in two devices. when i send message from one (Device A) to other (Device B).The device B will display correct Unread count i.e 1 . Now when i click on chat dialog and get entered inside the chat room (of Device B). and come back to it's listing page and then again try to send message from Device A to device B . This time the unread count comes as 2 but it should be one as i already viewed my previous message. This get more worse if i try to open my chat room again to read the message(Device B) and get back to my listing page(Device B) after reading the message . This time if I send the message from Device A to Device B, Then the count came out as "5" just for my one message this thing is making me sick, I debugged the whole code, it's chatDialog .getUnreadMessageCount() who is returning me count "5", I don't know why my previous messages are not counted as being read messages and why everytime I open chat room one additional number gets added up inside the unread count.Please help me out , i am scratching my head from past two days.
Your help will be greatly Appreciated.
Thanks

Problem is that your AllDialogsMessageListener is not getting unregistered so unregister it by calling unregisterQbChatListeners(); when you will be opening your chat room screen . Every thing will work fine once you do that.
This what i mean :-
binding.listDialogsChats.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
QBChatDialog selectedDialog = (QBChatDialog) parent.getItemAtPosition(position);
if (currentActionMode == null) {
unregisterQbChatListeners();
ChatActivity.startForResult(((Activity) mContext), REQUEST_DIALOG_ID_FOR_UPDATE, selectedDialog);
} else {
dialogsAdapter.toggleSelection(selectedDialog);
}
}
});
private void unregisterQbChatListeners() {
if (incomingMessagesManager != null) {
incomingMessagesManager.removeDialogMessageListrener(allDialogsMessagesListener);
}
if (systemMessagesManager != null) {
systemMessagesManager.removeSystemMessageListener(systemMessagesListener);
}
dialogsManager.removeManagingDialogsCallbackListener(this);
}
cheers!!!

Please use this code below :
QBChatService.markMessagesAsRead("YOUR_DIALOG_ID", null, new QBEntityCallback<Void>() {
#Override
public void onSuccess(Void aVoid, Bundle bundle) {
QBRequestGetBuilder requestBuilder = new QBRequestGetBuilder();
requestBuilder.eq("_id", Team.getCurrent().getChatId());
QBChatService.getChatDialogs(null, requestBuilder, new QBEntityCallback<ArrayList<QBDialog>>() {
#Override
public void onSuccess(ArrayList<QBDialog> qbDialogs, Bundle bundle) {
if (qbDialogs != null && qbDialogs.size() > 0) {
QBDialog dialog = qbDialogs.get(0);//here you get your dialog with unreadMessageCount = 0
}
}
#Override
public void onError(QBResponseException e) {
}
});
}
#Override
public void onError(QBResponseException e) {
}
});

Update custom adapter with query results

i want to query results from custom adapter by comparing query text with list in RecycleView, it successfully gets results from query then i make list of results and update the existing adapter but it does not effect anything, i use below code fot that
combinationMessagesList = createCombinationMessagesList();
combinationMessages = createCombinationMessagesList();
combinationMessages.clear();
for (int i = 0; i < combinationMessagesList.size(); i++) {
CombinationMessage message = combinationMessagesList.get(i);
if (message.getBody().toString().equals(search.getText().toString())){
combinationMessages.add(combinationMessagesList.get(i));
}
}
messagesAdapter.setList(combinationmessagesList);
messagesAdapter.notifyDataSetChanged();
}
PrivateDialogActivity
public class PrivateDialogActivity extends BaseDialogActivity {
private FriendOperationAction friendOperationAction;
private FriendObserver friendObserver;
private int operationItemPosition;
private final String TAG = "PrivateDialogActivity";
EditText search;
public static void start(Context context, User opponent, Dialog dialog) {
Intent intent = new Intent(context, PrivateDialogActivity.class);
intent.putExtra(QBServiceConsts.EXTRA_OPPONENT, opponent);
intent.putExtra(QBServiceConsts.EXTRA_DIALOG, dialog);
context.startActivity(intent);
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
initFields();
context = this;
if (dialog == null) {
finish();
}
setUpActionBarWithUpButton();
if (isNetworkAvailable()) {
deleteTempMessages();
}
addObservers();
initMessagesRecyclerView();
search = (EditText) findViewById(R.id.search_edittext);
Button button = (Button) findViewById(R.id.search);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
showResult();
}
});
}
private void showResult() {
combinationMessagesList = createCombinationMessagesList();
combinationMessages = createCombinationMessagesList();
combinationMessages.clear();
for (int i = 0; i < combinationMessagesList.size(); i++) {
CombinationMessage message = combinationMessagesList.get(i);
if (message.getBody().toString().equals(search.getText().toString())){
combinationMessages.add(combinationMessagesList.get(i));
}
}
messagesAdapter.setList(combinationMessagesList);
messagesAdapter.notifyDataSetChanged();
}
#Override
protected void addActions() {
super.addActions();
addAction(QBServiceConsts.ACCEPT_FRIEND_SUCCESS_ACTION, new AcceptFriendSuccessAction());
addAction(QBServiceConsts.ACCEPT_FRIEND_FAIL_ACTION, failAction);
addAction(QBServiceConsts.REJECT_FRIEND_SUCCESS_ACTION, new RejectFriendSuccessAction());
addAction(QBServiceConsts.REJECT_FRIEND_FAIL_ACTION, failAction);
updateBroadcastActionList();
}
#Override
protected void onResume() {
super.onResume();
checkForCorrectChat();
if (isNetworkAvailable()) {
startLoadDialogMessages();
}
checkMessageSendingPossibility();
}
#Override
protected void onDestroy() {
super.onDestroy();
deleteObservers();
}
#Override
protected void updateActionBar() {
setOnlineStatus(opponentUser);
checkActionBarLogo(opponentUser.getAvatar(), R.drawable.placeholder_user);
}
#Override
protected void onConnectServiceLocally(QBService service) {
onConnectServiceLocally();
setOnlineStatus(opponentUser);
}
#Override
protected void onFileLoaded(QBFile file, String dialogId) {
if(!dialogId.equals(dialog.getDialogId())){
return;
}
try {
privateChatHelper.sendPrivateMessageWithAttachImage(file, opponentUser.getUserId(), null, null);
} catch (QBResponseException exc) {
ErrorUtils.showError(this, exc);
}
}
#Override
protected Bundle generateBundleToInitDialog() {
Bundle bundle = new Bundle();
bundle.putInt(QBServiceConsts.EXTRA_OPPONENT_ID, opponentUser.getUserId());
return bundle;
}
#Override
protected void initMessagesRecyclerView() {
super.initMessagesRecyclerView();
messagesAdapter = new PrivateDialogMessagesAdapter(this, friendOperationAction, combinationMessagesList, this, dialog);
messagesRecyclerView.addItemDecoration(
new StickyRecyclerHeadersDecoration((StickyRecyclerHeadersAdapter) messagesAdapter));
findLastFriendsRequest();
messagesRecyclerView.setAdapter(messagesAdapter);
scrollMessagesToBottom();
}
#Override
protected void updateMessagesList() {
initActualExtras();
checkForCorrectChat();
int oldMessagesCount = messagesAdapter.getAllItems().size();
this.combinationMessagesList = createCombinationMessagesList();
Log.d(TAG, "combinationMessagesList = " + combinationMessagesList);
messagesAdapter.setList(combinationMessagesList);
findLastFriendsRequest();
checkForScrolling(oldMessagesCount);
}
private void initActualExtras() {
opponentUser = (User) getIntent().getExtras().getSerializable(QBServiceConsts.EXTRA_OPPONENT);
dialog = (Dialog) getIntent().getExtras().getSerializable(QBServiceConsts.EXTRA_DIALOG);
}
#Override
public void notifyChangedUserStatus(int userId, boolean online) {
super.notifyChangedUserStatus(userId, online);
if (opponentUser != null && opponentUser.getUserId() == userId) {
setOnlineStatus(opponentUser);
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.private_dialog_menu, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
boolean isFriend = DataManager.getInstance().getFriendDataManager().getByUserId(
opponentUser.getUserId()) != null;
if (!isFriend && item.getItemId() != android.R.id.home) {
ToastUtils.longToast(R.string.dialog_user_is_not_friend);
return true;
}
switch (item.getItemId()) {
case R.id.action_audio_call:
callToUser(opponentUser, QBRTCTypes.QBConferenceType.QB_CONFERENCE_TYPE_AUDIO);
break;
case R.id.switch_camera_toggle:
callToUser(opponentUser, QBRTCTypes.QBConferenceType.QB_CONFERENCE_TYPE_VIDEO);
break;
default:
super.onOptionsItemSelected(item);
}
return true;
}
#Override
protected void checkMessageSendingPossibility() {
boolean enable = dataManager.getFriendDataManager().existsByUserId(opponentUser.getUserId()) && isNetworkAvailable();
checkMessageSendingPossibility(enable);
}
#OnClick(R.id.toolbar)
void openProfile(View view) {
UserProfileActivity.start(this, opponentUser.getUserId());
}
private void initFields() {
chatHelperIdentifier = QBService.PRIVATE_CHAT_HELPER;
friendOperationAction = new FriendOperationAction();
friendObserver = new FriendObserver();
initActualExtras();
// opponentUser = (User) getIntent().getExtras().getSerializable(QBServiceConsts.EXTRA_OPPONENT);
// dialog = (Dialog) getIntent().getExtras().getSerializable(QBServiceConsts.EXTRA_DIALOG);
combinationMessagesList = createCombinationMessagesList();
title = opponentUser.getFullName();
}
private void addObservers() {
dataManager.getFriendDataManager().addObserver(friendObserver);
}
private void deleteObservers() {
dataManager.getFriendDataManager().deleteObserver(friendObserver);
}
private void findLastFriendsRequest() {
((PrivateDialogMessagesAdapter) messagesAdapter).findLastFriendsRequestMessagesPosition();
messagesAdapter.notifyDataSetChanged();
}
private void setOnlineStatus(User user) {
if (user != null) {
if (friendListHelper != null) {
String offlineStatus = getString(R.string.last_seen, DateUtils.toTodayYesterdayShortDateWithoutYear2(user.getLastLogin()),
DateUtils.formatDateSimpleTime(user.getLastLogin()));
setActionBarSubtitle(
OnlineStatusUtils.getOnlineStatus(this, friendListHelper.isUserOnline(user.getUserId()), offlineStatus));
}
}
}
public void sendMessage(View view) {
sendMessage(true);
}
private void callToUser(User user, QBRTCTypes.QBConferenceType qbConferenceType) {
if (!isChatInitializedAndUserLoggedIn()) {
ToastUtils.longToast(R.string.call_chat_service_is_initializing);
return;
}
List<QBUser> qbUserList = new ArrayList<>(1);
qbUserList.add(UserFriendUtils.createQbUser(user));
CallActivity.start(PrivateDialogActivity.this, qbUserList, qbConferenceType, null);
}
private void acceptUser(final int userId) {
if (isNetworkAvailable()) {
if (!isChatInitializedAndUserLoggedIn()) {
ToastUtils.longToast(R.string.call_chat_service_is_initializing);
return;
}
showProgress();
QBAcceptFriendCommand.start(this, userId);
} else {
ToastUtils.longToast(R.string.dlg_fail_connection);
return;
}
}
private void rejectUser(final int userId) {
if (isNetworkAvailable()) {
if (!isChatInitializedAndUserLoggedIn()) {
ToastUtils.longToast(R.string.call_chat_service_is_initializing);
return;
}
showRejectUserDialog(userId);
} else {
ToastUtils.longToast(R.string.dlg_fail_connection);
return;
}
}
private void showRejectUserDialog(final int userId) {
User user = DataManager.getInstance().getUserDataManager().get(userId);
if (user == null) {
return;
}
TwoButtonsDialogFragment.show(getSupportFragmentManager(),
getString(R.string.dialog_message_reject_friend, user.getFullName()),
new MaterialDialog.ButtonCallback() {
#Override
public void onPositive(MaterialDialog dialog) {
super.onPositive(dialog);
showProgress();
QBRejectFriendCommand.start(PrivateDialogActivity.this, userId);
}
});
}
private void checkForCorrectChat() {
Dialog updatedDialog = null;
if (dialog != null) {
updatedDialog = dataManager.getDialogDataManager().getByDialogId(dialog.getDialogId());
} else {
finish();
}
if (updatedDialog == null) {
finish();
} else {
dialog = updatedDialog;
}
}
private class FriendOperationAction implements FriendOperationListener {
#Override
public void onAcceptUserClicked(int position, int userId) {
operationItemPosition = position;
acceptUser(userId);
}
#Override
public void onRejectUserClicked(int position, int userId) {
operationItemPosition = position;
rejectUser(userId);
}
}
private class AcceptFriendSuccessAction implements Command {
#Override
public void execute(Bundle bundle) {
((PrivateDialogMessagesAdapter) messagesAdapter).clearLastRequestMessagePosition();
messagesAdapter.notifyItemChanged(operationItemPosition);
startLoadDialogMessages();
hideProgress();
}
}
private class RejectFriendSuccessAction implements Command {
#Override
public void execute(Bundle bundle) {
((PrivateDialogMessagesAdapter) messagesAdapter).clearLastRequestMessagePosition();
messagesAdapter.notifyItemChanged(operationItemPosition);
startLoadDialogMessages();
hideProgress();
}
}
private class FriendObserver implements Observer {
#Override
public void update(Observable observable, Object data) {
if (data != null && data.equals(FriendDataManager.OBSERVE_KEY)) {
checkForCorrectChat();
checkMessageSendingPossibility();
}
}
}
}

it was my own mistake it code, i made the code work by changing messagesAdapter.setList(combinationmessagesList)
to
messagesAdapter.setList(combinationMessages);

How to redirect Facebook Login screen in Facebook App

I have created an android app, in that I wants to redirect Facebook Login screen from it.
How to make it possible ?

Here is my facebook class, and its working very fine. Just try it, you will learn lots of things from Simple Facebook. Dont consider some unusual code from below.
public class IjoomerFacebookSharingActivity extends Activity {
private SimpleFacebook simpleFacebook;
private SimpleFacebookConfiguration.Builder simpleFacebookConfigurationBuilder;
private SimpleFacebookConfiguration simpleFacebookConfiguration;
private String IN_MESSAGE;
private String IN_CAPTION;
private String IN_NAME;
private String IN_PICTURE;
private String IN_LINK;
private String IN_DESCRIPTION;
#Override
public String[] setTabItemNames() {
return new String[0];
}
#Override
public int setTabBarDividerResId() {
return 0;
}
#Override
public int setTabItemLayoutId() {
return 0;
}
#Override
public int[] setTabItemOnDrawables() {
return new int[0];
}
#Override
public int[] setTabItemOffDrawables() {
return new int[0];
}
#Override
public int[] setTabItemPressDrawables() {
return new int[0];
}
#Override
public void onCheckedChanged(RadioGroup radioGroup, int i) {
}
#Override
public int setLayoutId() {
return R.layout.facebook_main;
}
#Override
public View setLayoutView() {
return null;
}
#Override
public int setHeaderLayoutId() {
return 0;
}
#Override
public int setFooterLayoutId() {
return 0;
}
#Override
public void initComponents() {
simpleFacebook = SimpleFacebook.getInstance(this);
simpleFacebookConfigurationBuilder = new SimpleFacebookConfiguration.Builder();
simpleFacebookConfigurationBuilder.setAppId(getString(R.string.facebook_app_id));
simpleFacebookConfigurationBuilder.setPermissions(new Permissions[]{Permissions.PUBLISH_ACTION,Permissions.PUBLISH_STREAM,Permissions.EMAIL,Permissions.BASIC_INFO,Permissions.USER_PHOTOS});
simpleFacebookConfiguration = simpleFacebookConfigurationBuilder.build();
SimpleFacebook.setConfiguration(simpleFacebookConfiguration);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
simpleFacebook.onActivityResult(this, requestCode, resultCode, data);
super.onActivityResult(requestCode, resultCode, data);
}
#Override
public void prepareViews() {
getIntentData();
if(simpleFacebook.isLogin()){
publishFeed();
}else{
simpleFacebook.login(new OnLoginListener());
}
}
private void getIntentData(){
IN_MESSAGE = getIntent().getStringExtra("IN_MESSAGE")==null ?"":getIntent().getStringExtra("IN_MESSAGE");
IN_CAPTION = getIntent().getStringExtra("IN_CAPTION")==null ?"":getIntent().getStringExtra("IN_CAPTION");
IN_DESCRIPTION = getIntent().getStringExtra("IN_DESCRIPTION")==null ?"":getIntent().getStringExtra("IN_DESCRIPTION");
IN_NAME = getIntent().getStringExtra("IN_NAME")==null ?"":getIntent().getStringExtra("IN_NAME");
IN_PICTURE = getIntent().getStringExtra("IN_PICTURE")==null ?"":getIntent().getStringExtra("IN_PICTURE");
IN_LINK = getIntent().getStringExtra("IN_LINK")==null ?"":getIntent().getStringExtra("IN_LINK");
}
#Override
public void setActionListeners() {
}
private void publishFeed(){
final Feed feed = new Feed.Builder()
.setMessage(IN_MESSAGE)
.setName(IN_NAME)
.setCaption(IN_CAPTION)
.setDescription(IN_DESCRIPTION)
.setPicture(IN_PICTURE)
.setLink(IN_LINK)
.build();
simpleFacebook.publish(feed, new onPublishListener());
}
class OnLoginListener implements SimpleFacebook.OnLoginListener{
#Override
public void onLogin() {
publishFeed();
}
#Override
public void onNotAcceptingPermissions() {
}
#Override
public void onThinking() {
}
#Override
public void onException(Throwable throwable) {
}
#Override
public void onFail(String reason) {
IjoomerUtilities.getCustomOkDialog(getString(R.string.friend),reason, getString(R.string.ok), R.layout.ijoomer_ok_dialog, new CustomAlertNeutral() {
#Override
public void NeutralMethod() {
}
});
}
}
class onPublishListener implements SimpleFacebook.OnPublishListener{
#Override
public void onComplete(String id) {
hideProgressDialog();
IjoomerUtilities.getCustomOkDialog(getString(R.string.friend),getString(R.string.facebook_share_success), getString(R.string.ok), R.layout.ijoomer_ok_dialog, new CustomAlertNeutral() {
#Override
public void NeutralMethod() {
finish();
}
});
}
#Override
public void onThinking() {
showProgressDialog("Doing Facebook Sharing...",IjoomerFacebookSharingActivity.this,true);
}
#Override
public void onException(Throwable throwable) {
hideProgressDialog();
throwable.printStackTrace();
}
#Override
public void onFail(String reason) {
hideProgressDialog();
IjoomerUtilities.getCustomOkDialog(getString(R.string.friend),reason, getString(R.string.ok), R.layout.ijoomer_ok_dialog, new CustomAlertNeutral() {
#Override
public void NeutralMethod() {
}
});
}
}
}

Develop Reference

The Android operating system is a mobile operating system that was developed by Google (GOOGL?) to be primarily used for touchscreen devices, cell phones, and tablets.

null object reference using RxJava and Retrofit [Android] - android

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