How to connect with other users

Greenhorn

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posted 11 months ago

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I am making an app that uses firebase, in which you register using email and password, the app then gives you a 4 digit randomly generated PIN, you can then use that PIN to find a user with the corresponding PIN and start a chat with them. However my code doesn't seem to be working right now. I used sample data and it worked fine but if I try to enter the PIN of another user (I created 2 accounts so 2 PINs) the chat doesn't display, rather I get a blank screen where the chat should be displayed in a recyclerView.

Here is my code.

package com.example.justbu;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;

import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.Toast;

import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;

import java.util.ArrayList;
import java.util.List;

public class ScreenWithChats extends AppCompatActivity {

private static final String TAG = "ScreenWithChats";

ImageView openPopUp;
    FrameLayout goToProfile;

private RecyclerView recyclerView;
    private ChatAdapter chatAdapter;

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_screen_with_chats);

openPopUp = findViewById(R.id.newMessage);
        goToProfile = findViewById(R.id.toProfile);

openPopUp.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(ScreenWithChats.this, SendMessagePopUp.class);
                startActivity(intent);
            }
        });

goToProfile.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(ScreenWithChats.this, UserProfile.class);
                intent.putExtra("previousActivity", ScreenWithChats.class.getSimpleName());
                startActivity(intent);
            }
        });

recyclerView = findViewById(R.id.availableChats);
        LinearLayoutManager layoutManager = new LinearLayoutManager(this);
        recyclerView.setLayoutManager(layoutManager);

// Initialize the chat adapter
        chatAdapter = new ChatAdapter();

// Retrieve the PIN from the intent extras
        String pin = getIntent().getStringExtra("pin");

// Fetch the chat data and update the RecyclerView
        fetchChatData(pin);

// Add sample chat data
        addSampleChatData(pin);
    }

private void fetchChatData(String pin) {
        DatabaseReference chatsRef = FirebaseDatabase.getInstance().getReference().child("chats");
        DatabaseReference chatRef = chatsRef.child(pin);

chatRef.addValueEventListener(new ValueEventListener() {
            @Override
            public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
                // Handle the retrieved chat data
                List<Chat> chatList = new ArrayList<>();

for (DataSnapshot snapshot : dataSnapshot.getChildren()) {
                    // Extract chat information from the snapshot and create a Chat object
                    Chat chat = snapshot.getValue(Chat.class);
                    chatList.add(chat);
                }

// Clear the existing chat list
                chatAdapter.clearChatList();

// Pass the chat data to the adapter and update the RecyclerView
                chatAdapter.setChatList(chatList);
                recyclerView.setAdapter(chatAdapter);

// Log the chat data
                for (Chat chat : chatList) {
                    Log.d(TAG, "Chat - Sender: " + chat.getSender() + ", Message: " + chat.getMessage() + ", Time: " + chat.getTime());
                }
            }

@Override
            public void onCancelled(DatabaseError databaseError) {
                // Handle any errors that occur during data retrieval
                Log.e(TAG, "Failed to fetch chat data: " + databaseError.getMessage());
            }
        });
    }

private void addSampleChatData(String pin) {
        // Create sample chat data
        List<Chat> sampleChatList = new ArrayList<>();
        sampleChatList.add(new Chat("1234", "Hello", "12:30 PM"));

List<Chat> sampleChatList1 = new ArrayList<>();
        sampleChatList1.add(new Chat("5678", "Hi there", "1:15 PM"));

List<Chat> sampleChatList2 = new ArrayList<>();
        sampleChatList2.add(new Chat("9101", "Hi there", "1:15 PM"));

// Store the sample chat data in Firebase
        DatabaseReference chatsRef = FirebaseDatabase.getInstance().getReference().child("chats");
        DatabaseReference chatRef = chatsRef.child(pin);

chatRef.push().setValue(sampleChatList);
        chatRef.push().setValue(sampleChatList1);
        chatRef.push().setValue(sampleChatList2);
    }
}

Giovanni Montano

Ranch Hand

Posts: 607

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posted 11 months ago

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Is the random code generated(just add some logs) is the Recycler view generated? Pplease furnish some `Log.d` So that we can debug together

code is emotional

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