call AsyncTask in Fragment from an Activity

call AsyncTask in Fragment from an Activity - android

in my application, i have main_activity with a FrameLayout, and a Fragment
public class Fragment1 extends Fragment {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment1, container, false);
return view;
}
public class StartAsyncTask extends AsyncTask<Void,Void,Void>{
#Override
protected Void doInBackground(Void... voids) {
Log.e("startAsyncTask", "start");
return null;
}
}
}
I need to call the AsyncTask from the MainActivity,
so i use:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
android.support.v4.app.FragmentTransaction fragmentTransaction =
getSupportFragmentManager().beginTransaction();
Fragment1 fragment1 = new Fragment1();
fragmentTransaction.replace(R.id.fragment, fragment1).commit();
new Fragment1.StartAsyncTask().execute();
}
but it dosn't work. new Fragment1.StartAsyncTask().execute(); is in red with (is not enclosing class) error.

You Can Do Like this, From your MainActivity You can Call your AsyncTask indirectly
ublic class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
android.support.v4.app.FragmentTransaction fragmentTransaction =
getSupportFragmentManager().beginTransaction();
BlankFragment fragment1 = new BlankFragment();
fragmentTransaction.replace(R.id.activity_main, fragment1).commit();
fragment1.startASycnc();
}
}
And Your Fragment Looks Like This:
public class BlankFragment extends Fragment {
public BlankFragment() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_blank, container, false);
}
public void startASycnc() {
new StartAsyncTask().execute();
}
public class StartAsyncTask extends AsyncTask<Void, Void, Void> {
#Override
protected Void doInBackground(Void... voids) {
Log.e("startAsyncTask", "start");
return null;
}
}
}

StartAsyncTask is an internal class of the Fragment, not a method. If you really need to trigger something to be done in the Fragment, have it expose a public method which takes the appropriate action rather than having a class outside of it be aware of its internals.

this is how i did it
public class MyFriendsLocationUpdate extends AsyncTask<String, Void, String> {
#Override
protected String doInBackground(String... params) {
while (true) {
System.out.println("working 1");
if (getActivity() != null) {
System.out.println("working 2");
if (FirebaseAuth.getInstance().getCurrentUser() != null) {
System.out.println("working 3");
DatabaseReference reference = FirebaseDatabase.getInstance().getReference(Comman.FRIENDS_REF).child(FirebaseAuth.getInstance().getCurrentUser().getUid());
reference.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(#NonNull DataSnapshot dataSnapshot) {
for (DataSnapshot snapshot : dataSnapshot.getChildren()) {
final FriendsModel friendsModel = snapshot.getValue(FriendsModel.class);
DatabaseReference reference1 = FirebaseDatabase.getInstance().getReference(Comman.PUBLIC_LOCATION_REF).child(friendsModel.getFrienduid()).child("l");
reference1.addListenerForSingleValueEvent(new ValueEventListener() {
#Override
public void onDataChange(#NonNull final DataSnapshot dataSnap) {
if (dataSnap.hasChild("0")) {
Picasso.get().load(friendsModel.getFriendimgurl())
.into(new Target() {
#Override
public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
if (markerFriend != null) {
markerFriend.remove();
}
double lat = (double) dataSnap.child("0").getValue();
double lng = (double) dataSnap.child("1").getValue();
System.out.println("lat = " + lat);
System.out.println("Your Friend " + friendsModel.getFriendname() + " is Here");
MarkerOptions markerOptions = new MarkerOptions();
markerOptions.position(new LatLng(lat, lng));
markerOptions.icon(BitmapDescriptorFactory.fromBitmap(getMarkerBitmapFromView(bitmap)));
markerOptions.title("Your Friend " + friendsModel.getFriendname() + "");
// markerOptions.icon(BitmapDescriptorFactory.fromResource(R.drawable.ic_person_marker));
markerFriend = mMap.addMarker(markerOptions);
if (isSharingValue.equals("true")) {
setupMapIfNeeded();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (checkLocationPermission() && checkLocation())//check whether location service is enable or not in your phone
{
setupLocation();
}
} else {
if (checkLocation())//check whether location service is enable or not in your phone
{
setupLocation();
}
}
}
}
#Override
public void onBitmapFailed(Exception e, Drawable errorDrawable) {
double lat = (double) dataSnap.child("latitude").getValue();
double lng = (double) dataSnap.child("longitude").getValue();
System.out.println("lat = " + lat);
System.out.println("You Friend " + friendsModel.getFriendname() + " is Here");
MarkerOptions markerOptions = new MarkerOptions();
markerOptions.position(new LatLng(lat, lng));
markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_GREEN));
markerOptions.title("You Friend " + friendsModel.getFriendname() + "");
// markerOptions.icon(BitmapDescriptorFactory.fromResource(R.drawable.ic_person_marker));
mMap.addMarker(markerOptions);
}
#Override
public void onPrepareLoad(Drawable placeHolderDrawable) {
}
});
for (int i = 0; i < placesArrayList.size(); i++) {
LatLng latLngplace = new LatLng(Double.parseDouble(placesArrayList.get(i).getPlacelat()), Double.parseDouble(placesArrayList.get(i).getPlacelng()));
queryForFriendInThePlace(latLngplace, (Double.parseDouble(placesArrayList.get(i).getPlaceradius()) / 1000), friendsModel.getFrienduid(), friendsModel.getFriendname(), placesArrayList.get(i).getPlacename());
}
} else {
System.out.println("result is: nofriend online");
}
}
#Override
public void onCancelled(#NonNull DatabaseError databaseError) {
}
});
}
}
#Override
public void onCancelled(#NonNull DatabaseError databaseError) {
}
});
try {
Thread.sleep(4000);
} catch (Exception e) {
e.printStackTrace();
}
// return "Executed";
}
}
}
}
#Override
protected void onPostExecute(String result) {
}
#Override
protected void onPreExecute() {
}
#Override
protected void onProgressUpdate(Void... values) {
}
}
to execute it you just write
new MyFriendsLocationUpdate().execute("");

Related

Issue with coding the communication between a fragment and an async task

I'm new to this concept. I read several threads but I block so thanks in advance for your patience!
In a fragment (frag1) I launch an async task. I want to prevent the user of doing anything while the task is not completed so I want to communicate the % of the task completed so the user waits informed.
I've defined an interface in a java SetVal.java:
interface SetVal {
void setVal(int val);
}
My async task:
class AsyncCounter extends AsyncTask<Void, Integer, Void> {
private SetVal sender;
public AsyncCounter(SetVal sv){
this.sender = sv;
}
#Override
protected Void doInBackground(Void... params) {
for(int i=0;i<60;i++){
publishProgress(i);
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
return null;
}
#Override
protected void onProgressUpdate(Integer... values) {
Log.i("ASYNC TASK","val: "+values[0]);
sender.setVal(values[0]);
}
#Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
}
public interface SetVal {
public void setVal(int val);
}
public void setListener(SetVal listener) {
this.sender = listener;
}
}
I'm struggling to know how to pass the interface to the task.
Is my code correct?
How do I instantiate the async task?
fragment:
public class Frag1 extends android.app.Fragment implements SetVal {
private static TextView txt;
private int counter;
SetVal listener;
public Frag1() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_frag1, container, false);
}
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
txt = (TextView) getActivity().findViewById(R.id.txt);
Button btn = (Button) getActivity().findViewById(R.id.btn1);
btn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Log.i("Frag1", "val: " + counter);
if (counter > 0) return;
FragmentTransaction ft = getFragmentManager().beginTransaction();
Frag2 f2 = new Frag2();
ft.replace(R.id.content_frame, f2);
ft.addToBackStack("f2");
ft.commit();
}
});
Button btn2 = (Button) getActivity().findViewById(R.id.btn2);
btn2.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
AsyncCounter ac = new AsyncCounter(???????);
ac.execute();
}
});
}
#Override
public void setVal(int val) {
counter = val;
}
}

Not sure what and why you are trying to do that, but you can pass the Fragment :
Try to create a private method:
public void onClick(View v) {
startMyAsync();
}
private void startMyAsync() {
new AsyncCounter(this).execute();
}
finally:
public AsyncCounter(Frag1 context){
this.sender = (SetVal)context;
}

Fragment orientation handle AsyncTask

I have tried writing asynctask within fragment so that orientation dilemma can be solveable.So far asynctask working good but the progressbar which is associated with it, on screen change, not showing .
I have attached my code below .
On Screen rotate, progressbar and textview gets hidden
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.a_fragment, container, false);
unbinder = ButterKnife.bind(this, view);
setRetainInstance(true);
return view;
}
#OnClick(R.id.btn)
public void onViewClicked() {
Log.w(TAG, "onBtn clicked");
new URLAsyncTask().execute();
}
#Override
public void onViewCreated(View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
}
#Override
public void onActivityCreated(#Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
if (savedInstanceState != null) {
progressBar.setVisibility(View.VISIBLE);
tvProgress.setVisibility(View.VISIBLE);
progressValue = savedInstanceState.getInt("value");
System.out.println(progressValue);
progressBar.setProgress(progressValue);
String rcv = savedInstanceState.getString("value2");
tvProgress.setText(rcv);
}
}
#Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putInt("value", progressBar.getProgress());
outState.putString("value2", tvProgress.getText().toString());
}
private class URLAsyncTask extends AsyncTask<Void, Integer, String> {
#Override
protected void onPreExecute() {
progressBar.setVisibility(View.VISIBLE);
}
#Override
protected String doInBackground(Void... voids) {
String result = null;
for (int i = 0; i <= 20; i++) {
SystemClock.sleep(500);
System.out.println("Loading..... " + i);
publishProgress(i);
}
result = "A dummy";
return result;
}
#Override
protected void onProgressUpdate(Integer... values) {
super.onProgressUpdate(values);
progressBar.setProgress(values[0]);
progressValue = values[0];
tvProgress.setText("Loading .. at % ".concat(String.valueOf(progressValue)));
}
#Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
Log.d(TAG, "onPostExecute() : s : " + s);
System.out.println(TAG + " " + progressValue);
if (progressValue == 20) {
tvProgress.setText("LOADING 100 % DONE");
progressBar.setVisibility(View.GONE);
}
}
}
}
A bit help would be highly appreciated

I dont understand well your problem but I assume that you have problem with device orientation in fragment, that the AsynTask is reexecuting and displaying wrong percentage.
If I'm correct: Then instead using AsynTask, try this :
AsynTaskLoader
Also you can find some quality tutorial on Udacity`s Android Developer Course,
(free)
https://www.udacity.com/course/android-basics-networking--ud843

count on chat does not working correctly QuickBlox

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) {
}
});

Skipped 98 frames! The application may be doing too much work on its main thread

I have navigationdrawer with nav menus. When clicking on each nav menus, specific fragment opened. Each fragment display recylerviews who fetch data from SQLite external database.Now when open new fragment, little seconds must wait and when to click on each item for go to next activity for display details information about the item, 5 seconds must wait to open Details Activity. I know this is a problem for fetching data in main Thread and fetch bitmap in the main thread.But I don't know how to solve this problem with use AsyncTask.My big problem is an open new activity for display information and waiting for 5 seconds.
This is my asiafragment.
AsiaFragment
public class AsiaFragment extends Fragment {
private static final String ASIA_FRAGMENT = "asia_fragment";
ArrayList<AsiaCountry> asiaCountries = new ArrayList<>();
ContentAdapter contentAdapter;
RecyclerView recyclerView;
private boolean isListView;
private Menu menu;
private StaggeredGridLayoutManager staggeredGridLayoutManager;
private MyAsyncTas myAsyncTas;
#Override
public void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setHasOptionsMenu(true);
}
#Override
public View onCreateView(LayoutInflater inflater, final ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.asia_fragment, container, false);
recyclerView = (RecyclerView) view.findViewById(R.id.recyclerView);
getActivity().setTitle("Asia");
isListView = true;
return view;
}
#Override
public void onViewCreated(View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
new MyAsyncTas().execute();
}
// When click on grid icon, view items must be convert to grid.
public void toggle() {
MenuItem item = menu.findItem(R.id.grid);
if (isListView) {
staggeredGridLayoutManager.setSpanCount(2);
item.setIcon(R.drawable.ic_vertical);
item.setTitle("Show as list");
isListView = false;
} else {
staggeredGridLayoutManager.setSpanCount(1);
item.setIcon(R.drawable.ic_grid);
item.setTitle("Show grid");
isListView = true;
}
}
#Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
inflater.inflate(R.menu.grid_item, menu);
this.menu = menu;
Log.d("Menu created", "grid");
super.onCreateOptionsMenu(menu, inflater);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.grid) {
Toast.makeText(getActivity(), "Grid item touched", Toast.LENGTH_SHORT).show();
toggle();
return true;
}
if (id == R.id.settings) {
Toast.makeText(getActivity(), "Setting clicked", Toast.LENGTH_SHORT).show();
return true;
}
return onOptionsItemSelected(item);
}
// When loading AsiaFragment, database loading from Eternal database.
public void loadDataBase() {
WorldCountryDatabase worldCountryDatabase = new WorldCountryDatabase(getActivity());
try {
worldCountryDatabase.createDatabase();
worldCountryDatabase.openDataBase();
Log.d("TAG", "Database open");
} catch (SQLiteException o) {
o.printStackTrace();
Log.d("Tag", o.getMessage());
}
try {
// Tell to database , take name and viewImage from worldCountries .
Cursor cursor = worldCountryDatabase.QueryData("SELECT name, Image FROM country WHERE continent ='آسیا'");
if (cursor != null) {
if (cursor.moveToFirst()) {
do {
AsiaCountry asiaCountry = new AsiaCountry();
asiaCountry.setName(cursor.getString(0));
asiaCountry.setFlag(cursor.getString(1));
Log.d(ASIA_FRAGMENT, cursor.getString(1));
asiaCountries.add(asiaCountry);
} while (cursor.moveToNext());
worldCountryDatabase.close();
}
}
} catch (SQLiteException o) {
o.printStackTrace();
Log.d("TAG", o.getMessage());
}
// When loading RecylerView staggeredGridLayout loading.
staggeredGridLayoutManager = new StaggeredGridLayoutManager(1, StaggeredGridLayoutManager.VERTICAL);
contentAdapter = new ContentAdapter(getActivity(), asiaCountries);
contentAdapter.notifyDataSetChanged();
contentAdapter.setListener(new ContentAdapter.Listener() {
#Override
public void onClick(int position) {
}
});
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(staggeredGridLayoutManager);
recyclerView.setAdapter(contentAdapter);
}
public class MyAsyncTas extends AsyncTask<Void, Void, Boolean> {
#Override
protected Boolean doInBackground(Void... params) {
return true;
}
#Override
protected void onPostExecute(Boolean aBoolean) {
super.onPostExecute(aBoolean);
loadDataBase();
}
}
This is my DetailCountry fragment, who must be displayed detatail country clicked.
DetailsCountry
public class DetailsCountry extends AppCompatActivity implements
TabLayout.OnTabSelectedListener,
EconomicFragment.EconomicOnFragmentInteractionListener,
SummarizeFragment.SummarizeOnFragmentInteractionListener,
HistoryFragment.HistoryOnFragmentInteractionListener,
GeographyFragment.GeographyOnFragmentInteractionListener,
TipsFragment.TipsOnFragmentInteractionListener,
DescriptionFragment.OtherOnFragmentInteractionListener,
PeopleFragment.PeopleOnFragmentInteractionListener {
public static String NAME_COUNTRY = "name";
public final String pageTitle[] = {"خلاصه",
"تاریخ",
"جغرافی",
"اقتصاد",
"مردم",
"غیره",
"نکات"};
ArrayList<AsiaCountry> asiaList = new ArrayList<>();
ImageView imageHistory;
TabLayout tabLayout;
ViewPager viewPager;
String content;
Bundle bundle;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.detial_country);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar_details);
setSupportActionBar(toolbar);
if (getSupportActionBar() != null) {
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
}
viewPager = (ViewPager) findViewById(R.id.viewPager_detail_country);
tabLayout = (TabLayout) findViewById(R.id.tabLayout_detail_country);
imageHistory = (ImageView) findViewById(R.id.image_detail_country);
bundle = getIntent().getExtras();
if (bundle != null) {
content = bundle.getString("name");
Log.d("contentDetail", content);
}
// Set title for activity title.
getSupportActionBar().setTitle(content);
retrieveData();
if (asiaList != null && asiaList.size() > 0) {
for (int i = 0; i < asiaList.size(); i++) {
imageHistory.setImageBitmap(loadBitmapFromAssets(getApplicationContext(),
asiaList.get(i).getImageResourceID()));
}
}
int numberPage = 7;
for (int i = 0; i < numberPage; i++) {
tabLayout.addTab(tabLayout.newTab().setText(pageTitle[i]));
}
tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);
ViewPagerCountryAdapter viewPagerAdapter = new ViewPagerCountryAdapter
(getSupportFragmentManager(), tabLayout.getTabCount());
viewPager.setAdapter(viewPagerAdapter);
tabLayout.setupWithViewPager(viewPager);
tabLayout.setOnTabSelectedListener(this);
}
private void retrieveData() {
WorldCountryDatabase worldCountryDatabase = new WorldCountryDatabase(getApplicationContext());
worldCountryDatabase.createDatabase();
worldCountryDatabase.openDataBase();
Log.d(ARG_PARAM1, "Database opened");
try {
Cursor cursor = worldCountryDatabase.QueryData("SELECT viewImage FROM country WHERE name = '" + content + "'");
Log.d("CURSOR", cursor.toString());
if (cursor.moveToFirst()) {
do {
AsiaCountry asia = new AsiaCountry();
asia.setImageResourceID(cursor.getString(0));
Log.d("image", cursor.getString(0));
asiaList.add(asia);
} while (cursor.moveToNext());
cursor.close();
}
} catch (SQLException e) {
e.printStackTrace();
Log.d("TAG", e.getMessage());
}
}
#Nullable
private Bitmap loadBitmapFromAssets(Context context, String path) {
InputStream stream = null;
try {
stream = context.getAssets().open(path);
return BitmapFactory.decodeStream(stream);
} catch (Exception ignored) {
} finally {
try {
if (stream != null) {
stream.close();
}
} catch (Exception ignored) {
}
}
return null;
}
#Override
protected void attachBaseContext(Context base) {
super.attachBaseContext(CalligraphyContextWrapper.wrap(base));
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
return super.onCreateOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
finish();
return true;
}
return super.onOptionsItemSelected(item);
}
#Override
public void onTabSelected(TabLayout.Tab tab) {
viewPager.setCurrentItem(tab.getPosition());
}
#Override
public void onTabUnselected(TabLayout.Tab tab) {
}
#Override
public void onTabReselected(TabLayout.Tab tab) {
}
#Override
public void economiOnFragmentInteraction(Uri uri) {
}
#Override
public void tipsOnFragmentInteraction(Uri uri) {
}
#Override
public void otherOnFragmentInteraction(Uri uri) {
}
#Override
public void peopleOnFragmentInteraction(Uri uri) {
}
#Override
public void historyOnFragmentInteraction(Uri uri) {
}
#Override
public void geographyOnFragmentInteraction(Uri uri) {
}
#Override
public void summarizeOnFragmentInteraction(Uri uri) {
}
public class DetailTask extends AsyncTask<Void, Void, Boolean>{
#Override
protected Boolean doInBackground(Void... params) {
return null;
}
#Override
protected void onPostExecute(Boolean aBoolean) {
super.onPostExecute(aBoolean);
}
}
Please help me, good friends. Thanks

How to connect WebSocket to Android Applicaton?

I am new in Android. I want to make a demo where I can connect my mobile phone to Server which is running on Different computer. My Backend gave me WebSocket URL. I am implementing then I able to get browser message on my phone but I can't send message to server. What I did, its here. Please guide me
public class MainActivity extends Activity {
private WebSocketClient mWebSocketClient;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
connectWebSocket();
if (savedInstanceState == null) {
getFragmentManager().beginTransaction()
.add(R.id.container, new PlaceholderFragment())
.commit();
}
}
public static class PlaceholderFragment extends Fragment {
public PlaceholderFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container, false);
return rootView;
}
}
private void connectWebSocket() {
URI uri;
try {
uri = new URI("ws://xx.xxxxx.xxxxx.com:9000");
} catch (URISyntaxException e) {
e.printStackTrace();
return;
}
mWebSocketClient = new WebSocketClient(uri) {
#Override
public void onOpen(ServerHandshake serverHandshake) {
Log.i("Websocket", "Opened");
mWebSocketClient.send("Hello from " + Build.MANUFACTURER + " " + Build.MODEL);
}
#Override
public void onMessage(String s) {
final String message = s;
runOnUiThread(new Runnable() {
#Override
public void run() {
TextView textView = (TextView) findViewById(R.id.messages);
textView.setText(textView.getText() + "\n" + message);
}
});
}
#Override
public void onClose(int i, String s, boolean b) {
Log.i("Websocket", "Closed " + s);
}
#Override
public void onError(Exception e) {
Log.i("Websocket", "Error " + e.getMessage());
}
};
mWebSocketClient.connect();
}
public void sendMessage(View view) {
EditText editText = (EditText) findViewById(R.id.message);
mWebSocketClient.send(editText.getText().toString());
editText.setText("");
}
}

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.

call AsyncTask in Fragment from an Activity - android

StartAsyncTask is an internal class of the Fragment, not a method. If you really need to trigger something to be done in the Fragment, have it expose a public method which takes the appropriate action rather than having a class outside of it be aware of its internals.

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Issue with coding the communication between a fragment and an async task

Fragment orientation handle AsyncTask

count on chat does not working correctly QuickBlox

Skipped 98 frames! The application may be doing too much work on its main thread

How to connect WebSocket to Android Applicaton?

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