I have built a chat app in firebase android everything is working fine the only problem is that when users are chatting with each other the messages are not showing in order or sequence they are just showing randomly. Image should be shown in proper sequence but it is not working please check it guide me why this is happning? thank you in adnvace
image here
I have no idea why is this happening
this is Adapter
public class MessageAdapter extends RecyclerView.Adapter {
Context context;
ArrayList<Message> messageArrayList;
int ITEM_SENT = 1;
int ITEM_RECEIVE = 2;
String senderRoom;
String receiverRoom;
public MessageAdapter()
{
}
public MessageAdapter(Context context, ArrayList<Message> messageArrayList, String senderRoom, String receiverRoom) {
this.context = context;
this.messageArrayList = messageArrayList;
this.senderRoom = senderRoom;
this.receiverRoom = receiverRoom;
}
@NonNull
@Override
public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
if (viewType==ITEM_SENT)
{
View view = LayoutInflater.from(context).inflate(R.layout.senderchatlayout, parent, false);
return new SenderViewHolder(view);
}else
{
View view = LayoutInflater.from(context).inflate(R.layout.receiverchatlayout, parent, false);
return new RecieverViewHolder(view);
}
}
@Override
public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
Message message = messageArrayList.get(position);
if (holder.getClass() == SenderViewHolder.class)
{
SenderViewHolder viewHolder = (SenderViewHolder) holder;
viewHolder.textViewMessage.setText(message.getMessage());
viewHolder.timeofmessage.setText(message.getCurrenttime());
}else
{
RecieverViewHolder viewHolder = (RecieverViewHolder) holder;
viewHolder.textViewMessage.setText(message.getMessage());
viewHolder.timeofmessage.setText(message.getCurrenttime());
}
}
@Override
public int getItemViewType(int position) {
Message message = messageArrayList.get(position);
if (FirebaseAuth.getInstance().getCurrentUser().getUid().equals(message.getSenderId()))
{
return ITEM_SENT;
}else
{
return ITEM_RECEIVE;
}
}
@Override
public int getItemCount() {
return messageArrayList.size();
}
public class SenderViewHolder extends RecyclerView.ViewHolder
{
TextView textViewMessage;
TextView timeofmessage;
public SenderViewHolder(@NonNull View itemView) {
super(itemView);
textViewMessage = itemView.findViewById(R.id.senderMessage);
timeofmessage = itemView.findViewById(R.id.senderTime);
}
}
public class RecieverViewHolder extends RecyclerView.ViewHolder
{
TextView textViewMessage;
TextView timeofmessage;
public RecieverViewHolder(@NonNull View itemView) {
super(itemView);
textViewMessage = itemView.findViewById(R.id.receiverMessage);
timeofmessage = itemView.findViewById(R.id.receiverTime);
}
}
}
CODE TO GET MESSAGES IN ChatActivity
public class SpecificChatActivity extends AppCompatActivity {
ActivitySpecificChatBinding binding;
private FirebaseAuth auth;
FirebaseFirestore firebaseFirestore;
private String enteredMessage;
String mreceiveruid, msenderuid;
String senderroom, receiverroom;
String currenttime;
Calendar calendar;
String conversionId;
ArrayList<Message> messageArrayList;
MessageAdapter adapter;
SimpleDateFormat simpleDateFormat;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
binding = ActivitySpecificChatBinding.inflate(getLayoutInflater());
setContentView(binding.getRoot());
auth = FirebaseAuth.getInstance();
firebaseFirestore = FirebaseFirestore.getInstance();
calendar = Calendar.getInstance();
simpleDateFormat = new SimpleDateFormat("hh:mm a");
setSupportActionBar(binding.specificToolbar);
messageArrayList = new ArrayList<>();
String id = UUID.randomUUID().toString();
Intent intent = getIntent();
String name = intent.getStringExtra("name");
String image = intent.getStringExtra("profileImage");
msenderuid = auth.getUid();
mreceiveruid = intent.getStringExtra("receiverUid");
senderroom = msenderuid+mreceiveruid;
receiverroom = mreceiveruid+msenderuid;
binding.specificUserName.setText(name);
if (!image.isEmpty())
{
Glide.with(getApplicationContext())
.load(image)
.placeholder(R.drawable.userchaticon)
.into(binding.specificUserImage);
}
binding.sendBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
enteredMessage = binding.messageBox.getText().toString();
if (enteredMessage.isEmpty())
{
Toast.makeText(SpecificChatActivity.this, "Entered some message", Toast.LENGTH_SHORT).show();
}else
{
Date date = new Date();
currenttime = simpleDateFormat.format(calendar.getTime());
Message message = new Message(enteredMessage, auth.getUid(), mreceiveruid, date.getTime(), currenttime, name, image);
firebaseFirestore.collection("Chats")
.document(senderroom)
.collection("Messages")
.document()
.set(message).addOnCompleteListener(new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task) {
firebaseFirestore.collection("Chats")
.document(receiverroom)
.collection("Messages")
.document()
.set(message).addOnCompleteListener(new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task) {
}
});
}
});
binding.messageBox.setText(null);
}
}
});
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
linearLayoutManager.setStackFromEnd(true);
binding.specificUserRecycler.setLayoutManager(linearLayoutManager);
adapter = new MessageAdapter(SpecificChatActivity.this, messageArrayList, senderroom, receiverroom);
binding.specificUserRecycler.setAdapter(adapter);
CollectionReference collectionReference = firebaseFirestore.collection("Chats").document(senderroom)
.collection("Messages");
collectionReference.addSnapshotListener(new EventListener<QuerySnapshot>() {
@Override
public void onEvent(@Nullable QuerySnapshot value, @Nullable FirebaseFirestoreException error) {
messageArrayList.clear();
for (DocumentSnapshot snapshots : value.getDocuments())
{
Message message = snapshots.toObject(Message.class);
messageArrayList.add(message);
}
adapter.notifyDataSetChanged();
}
});
}
}
