Clash Royale CLAN TAG#URR8PPP

Chat messaging app crashes (using Firebase)

I am trying to implement a simple chat messaging feature into my project using Firebase. The app keeps crashing when trying to send a message from my device or Firebase.

Found conflicting getters for name: isChangingConfigurations

Here is the tutorial I am referencing from: https://code.tutsplus.com/tutorials/how-to-create-an-android-chat-app-using-firebase--cms-27397

Here's the github of someone who followed the same tutorial with success:
https://github.com/tutsplus/how-to-create-an-android-chat-app-using-firebase/blob/master/app/src/main/java/com/tutsplus/mychatapp/MainActivity.java

I have been stuck on this for a week, can someone help?

package com.plugmeinapp.plugmeinapp;
// this activity deals with Usertype:Artist to message artist or edit profile

import android.content.Intent;
import android.support.constraint.ConstraintLayout;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;

import com.firebase.ui.database.FirebaseListAdapter;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;

import java.text.DateFormat;

public class ArtistStartChatActivity extends AppCompatActivity

private FirebaseAuth mAuth;
private FirebaseUser mCurrentUser;
private DatabaseReference mRef, mUsersRef, mCurrentUserRef, mChatsRef;

private Button button_Artist_startChat, button_Artist_EditProfile;



@Override
protected void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_artist_start_chat); // set to xml file layout


//FireBase
// initialize to get current user's information
mAuth = FirebaseAuth.getInstance();
mCurrentUser = mAuth.getCurrentUser();
mRef = FirebaseDatabase.getInstance().getReference();
mUsersRef = mRef.child("Users");
mChatsRef = mRef.child("Chats");

try // this is created so that user authorization is empty(turned off app, signed out to come back)
mAuth = FirebaseAuth.getInstance();
mCurrentUser = mAuth.getCurrentUser();

// if currentUser turned out to be null now Start from login activity
if (mAuth == null && mCurrentUser == null)
Intent i = new Intent(ArtistStartChatActivity.this, LoginActivity.class);
startActivity(i);
finish();

catch (NullPointerException e)
e.printStackTrace();


// choose either chat or edit profile for Artist option
button_Artist_startChat = findViewById(R.id.button_Artist_startChat);
button_Artist_EditProfile = findViewById(R.id.button_Artist_EditProfile);

//when user clicks to Start Chat, move the page to the Chat activity
button_Artist_startChat.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View v)
Intent startArtistChat = new Intent(ArtistStartChatActivity.this, Chat.class);
startActivity(startArtistChat);
finish();

);

//when user clicks to go edit UserProfile, move the page to the UserProfile activity
button_Artist_EditProfile.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View v)

Intent openArtistProfile = new Intent(ArtistStartChatActivity.this, UserProfileActivity.class);
startActivity(openArtistProfile);
finish();

);





package com.plugmeinapp.plugmeinapp;
import android.content.Intent;
import android.content.Loader;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.constraint.ConstraintLayout;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;

import java.util.Date;

import com.firebase.ui.auth.AuthUI;
import com.firebase.ui.database.FirebaseListAdapter;
import com.firebase.ui.database.FirebaseListOptions;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.Query;
import com.google.firebase.iid.FirebaseInstanceId;
//import com.google.instrumentation.stats.Tag;


public class Chat extends ArtistStartChatActivity


private FirebaseAuth mAuth;
private static final int SIGN_IN_REQUEST_CODE = 1;
private FirebaseListAdapter<ChatElements> adapter;
FloatingActionButton fab;




@Override
public boolean onOptionsItemSelected(MenuItem item)
if (item.getItemId() == R.id.signOut)
AuthUI.getInstance().signOut(this).addOnCompleteListener(new OnCompleteListener<Void>()
@Override
public void onComplete(@NonNull Task<Void> task)
//Snackbar.make(activity_chat,"Signed out",Snackbar.LENGTH_SHORT).show();
Toast.makeText(Chat.this,"Signed out.",Toast.LENGTH_LONG).show();
finish();

);

return true;


@Override
public boolean onCreateOptionsMenu(Menu menu)
getMenuInflater().inflate(R.menu.menu,menu);
return true;


@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
super.onActivityResult(requestCode, resultCode, data);
if(requestCode == SIGN_IN_REQUEST_CODE)
if(resultCode == RESULT_OK)
//Snackbar.make(activity_chat, "Welcome!",Snackbar.LENGTH_SHORT).show();
Toast.makeText(this,"Welcome!",Toast.LENGTH_LONG).show();
displayChatElements();
else
//Snackbar.make(activity_chat,"Could not sign in." ,Snackbar.LENGTH_SHORT).show();
Toast.makeText(this,"Could not sign in.",Toast.LENGTH_LONG).show();
// Close the app
finish();





@Override
protected void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_chat); // set to xml file layout

mAuth = FirebaseAuth.getInstance();

//FireBase
//Check if not sign-in then navigation SignIn page
if (FirebaseAuth.getInstance().getCurrentUser() == null)
// Start sign in/sign up activity
startActivityForResult(AuthUI.getInstance().createSignInIntentBuilder().build(), SIGN_IN_REQUEST_CODE);
else
// User is already signed in. Therefore, display
Toast.makeText(this, "Welcome!" + FirebaseAuth.getInstance().getCurrentUser().getDisplayName(), Toast.LENGTH_LONG).show();
//Load Chat Content
displayChatElements();


FloatingActionButton fab = findViewById(R.id.fab);
if (fab != null)
fab.setOnClickListener(new View.OnClickListener()
//Get User Data, Send/Receive to Firebase
@Override
public void onClick(View view)
EditText input = (EditText) findViewById(R.id.input);

// Read the input field and push a new instance
// of ChatElement to the Firebase database
FirebaseDatabase
.getInstance()
.getReference()
.push()
//Logcat ERROR Here!!!!!
.setValue(new ChatElements(input.getText().toString(), FirebaseAuth.getInstance().getCurrentUser().getDisplayName()));

// Clear the input
input.setText("");

);






private void displayChatElements()
ListView listOfMessage = (ListView) findViewById(R.id.list_of_messages);



//Retrieve "chats" in your Firebase DB:
Query query =
FirebaseDatabase.getInstance().getReference().child("chats");

//Create FirebaseListOptions
FirebaseListOptions<ChatElements> options = new FirebaseListOptions.Builder<ChatElements>()
.setQuery(query, ChatElements.class)
.setLayout(android.R.layout.activity_list_item)
.build();


//Finally you pass them to the constructor here:
adapter = new FirebaseListAdapter<ChatElements>(options)
@Override
protected void populateView(View v, ChatElements model, int position)
//get references to the view of chat_list_item.xml
TextView messageText, messageUser, messageTime;
messageText = (TextView) v.findViewById(R.id.message_text);
messageUser = (TextView) v.findViewById(R.id.message_user);
messageTime = (TextView) v.findViewById(R.id.message_time);

// Set their text
messageText.setText(model.getMessageText());
messageUser.setText(model.getMessageUser());

// Format the date before showing it
messageTime.setText(android.text.format.DateFormat.format("dd-MM-yyyy (HH:mm:ss)", model.getMessageTime()));

;
listOfMessage.setAdapter(adapter);


@Override
public void onStart()
super.onStart();
adapter.startListening();



@Override
protected void onStop()
super.onStop();
adapter.stopListening();




apply plugin: 'com.android.application'

android

compileSdkVersion 27
defaultConfig
applicationId "com.plugmeinapp.plugmeinapp"
minSdkVersion 16
targetSdkVersion 27
versionCode 1
versionName "1.0"
//testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"

buildTypes
release
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'




dependencies

implementation fileTree(include: ['*.jar'], dir: 'libs')
//implementation 'com.android.support:appcompat-v7:27.1.1'//Chat Messaging
//implementation 'com.android.support:design:27.1.1' //Chat Messaging
//implementation 'com.android.support:cardview-v7:27.1.1' //Chat Messaging
implementation 'com.android.support.constraint:constraint-layout:1.1.2'
implementation 'com.google.firebase:firebase-messaging:17.1.0'
//testImplementation 'junit:junit:4.12'
//androidTestImplementation 'com.android.support.test:runner:1.0.1'
//androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
implementation 'com.google.firebase:firebase-core:16.0.1'
implementation 'com.google.firebase:firebase-auth:16.0.2'
implementation 'com.google.firebase:firebase-firestore:17.0.4'
implementation 'com.firebaseui:firebase-ui-database:4.0.0'
implementation 'com.firebaseui:firebase-ui-auth:4.0.0'
implementation 'com.firebaseui:firebase-ui:4.0.0'
implementation 'de.hdodenhof:circleimageview:2.2.0'
implementation 'com.squareup.picasso:picasso:2.71828'
implementation 'com.google.android.gms:play-services-auth:15.0.1'




apply plugin: 'com.google.gms.google-services'


08-11 13:41:19.726 9209-9209/com.plugmeinapp.plugmeinapp D/AndroidRuntime: Shutting down VM
08-11 13:41:19.728 9209-9209/com.plugmeinapp.plugmeinapp E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.plugmeinapp.plugmeinapp, PID: 9209
com.google.firebase.database.DatabaseException: Found conflicting getters for name: isChangingConfigurations
at com.google.android.gms.internal.firebase_database.zzku.<init>(Unknown Source)
at com.google.android.gms.internal.firebase_database.zzkt.zza(Unknown Source)
at com.google.android.gms.internal.firebase_database.zzkt.zzi(Unknown Source)
at com.google.android.gms.internal.firebase_database.zzkt.zzh(Unknown Source)
at com.google.firebase.database.DatabaseReference.zza(Unknown Source)
at com.google.firebase.database.DatabaseReference.setValue(Unknown Source)
at com.plugmeinapp.plugmeinapp.Chat$2.onClick(Chat.java:120) //Chat.Java File
at android.view.View.performClick(View.java:5624)
at android.view.View$PerformClick.run(View.java:22441)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6316)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:872)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:762)
08-11 13:46:11.078 9209-10777/com.plugmeinapp.plugmeinapp I/FirebaseAuth:
[FirebaseAuth:] Loading module via FirebaseOptions.
08-11 13:46:11.080 9209-10777/com.plugmeinapp.plugmeinapp I/FirebaseAuth:
[FirebaseAuth:] Preparing to create service connection to gms implementation


package com.plugmeinapp.plugmeinapp;

import java.util.Date;

public class ChatElements extends Chat {

private String messageText;
private String messageUser;
private long messageTime;

public ChatElements(String messageText, String messageUser)
this.messageText = messageText;
this.messageUser = messageUser;

// Initialize to current time
messageTime = new Date().getTime();



public ChatElements()


public String getMessageText()
return messageText;


public void setMessageText(String messageText)
this.messageText = messageText;


public String getMessageUser()
return messageUser;


public void setMessageUser(String messageUser)
this.messageUser = messageUser;


public long getMessageTime()
return messageTime;


public void setMessageTime(long messageTime)
this.messageTime = messageTime;



ChatElements

isChangingConfigurations

ChatElements

1 Answer
1

These are needed libraries for your project:

implementation 'com.android.support:appcompat-v7:27.1.1'
implementation 'com.android.support:design:27.1.1'
implementation 'com.android.support:cardview-v7:27.1.1'


And change the apply plugin into 'com.android.library'

apply plugin

'com.android.library'

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