My fragment_profile.xml doesnt show. Whats wrong with my program?

I created a new fragment which is ProfileFragment.java and also created fragment_profile.xml.
The program does not give any error but my layout doesnt show. What is wrong?

My ProfileFragment.java :

import android.os.Bundle;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
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.Query;
import com.google.firebase.database.ValueEventListener;
import com.squareup.picasso.Picasso;
public class ProfileFragment extends Fragment {
//firebase auth
FirebaseAuth firebaseAuth;
FirebaseUser user;
FirebaseDatabase firebaseDatabase;
DatabaseReference databaseReference;
//layout views
ImageView avatar;
TextView nameTxt, emailTxt, phoneTxt;
public ProfileFragment() {
//boş public constructor gerekli
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view =  inflater.inflate(R.layout.fragment_profile, container, false);
//init firebase
firebaseAuth = FirebaseAuth.getInstance();
user = firebaseAuth.getCurrentUser();
firebaseDatabase = FirebaseDatabase.getInstance();
databaseReference = firebaseDatabase.getReference("Users");
//init layout views
avatar = view.findViewById(R.id.avatar);
nameTxt = view.findViewById(R.id.nameTxt);
emailTxt = view.findViewById(R.id.emailTxt);
phoneTxt = view.findViewById(R.id.phoneTxt);
/* giriş yapan kullanıcıların bilgilerini email yada uid kullanarak çekmek zorundayız
Kullanıcı detaylarını email adreslerini kullanarak çekicez
orderbyChild query kullanarak giriş yapılan email ile email key ini eşleştirerek kullanıcı detaylarına ulaşılıyor
*/
Query query = databaseReference.orderByChild("email").equalTo(user.getEmail());
query.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot snapshot) {
//gerekli veriler gelene kadar kontrol et
for (DataSnapshot ds: snapshot.getChildren()){
//verileri almak için
String name = ""+ ds.child("name").getValue();
String email = ""+ ds.child("email").getValue();
String phone = ""+ ds.child("phone").getValue();
String image = ""+ ds.child("image").getValue();
//set data
nameTxt.setText(name);
emailTxt.setText(email);
phoneTxt.setText(phone);
try {
// resim alınırsa ayarla
Picasso.get().load(image).into(avatar);
} catch (Exception e){
// resim alınırken herangi bir sıkıntı varsa varsayılan olarak ayarla
Picasso.get().load(R.drawable.add_photo_foreground).into(avatar);
}
}
}
@Override
public void onCancelled(@NonNull DatabaseError error) {
}
});
return view;
}
}

and my fragment_profile.xml :

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#F1EDED"
tools:context=".ProfileFragment">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="180dp"
android:background="#2ECC71">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="120dp"
android:orientation="horizontal"
android:layout_marginTop="100dp">
<ImageView
android:id="@+id/avatar"
android:layout_width="120dp"
android:layout_height="120dp"
android:src="@drawable/add_photo_foreground"
android:layout_marginStart="20dp"
android:background="#6AE493"
android:padding="5dp">
</ImageView>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="@+id/nameTxt"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="5dp"
android:layout_marginStart="5dp"
android:layout_marginLeft="5dp"
android:textSize="25dp"
android:textColor="#FFFFFF"></TextView>
<TextView
android:id="@+id/emailTxt"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="5dp"
android:layout_marginLeft="5dp"
android:textColor="#FFFFFF"></TextView>
<TextView
android:id="@+id/phoneTxt"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="5dp"
android:layout_marginLeft="5dp"
android:textColor="#FFFFFF"></TextView>
</LinearLayout>
</LinearLayout>
</RelativeLayout>
</RelativeLayout>
</ScrollView>

I want to create a user profile page using firebase realtime database. The user details come from using email for current signed user. But my profile layout file does not work. How can I fix this problem? Whats wrong in my code?

My DasboardAvtivity.java -> For fragment transaction.

package com.gamze.pawsbook;
import androidx.annotation.NonNull;
import androidx.appcompat.app.ActionBar;
import androidx.appcompat.app.AppCompatActivity;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentTransaction;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;
import com.google.android.material.bottomnavigation.BottomNavigationView;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
public class DashboardActivity extends AppCompatActivity {
//FirebaseAuth
FirebaseAuth firebaseAuth;
//Actionbar
ActionBar actionBar;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_dashboard);
//ActionBar ve başlığı
actionBar = getSupportActionBar();
actionBar.setTitle("Profile");
//profileTxt = findViewById(R.id.profileTxt);
firebaseAuth = FirebaseAuth.getInstance();
//Bottom navigation
BottomNavigationView navigationView = findViewById(R.id.navigation);
navigationView.setOnNavigationItemSelectedListener(selectedListener);
//Home Fragment'ı boş default fragment olarak ayarlanması
actionBar.setTitle("Home"); //ActionBar başlığını değiştirme
HomeFragment homeFragment = new HomeFragment();
FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
ft.replace(R.id.content, homeFragment, "");
ft.commit();
}
private BottomNavigationView.OnNavigationItemSelectedListener selectedListener =
new BottomNavigationView.OnNavigationItemSelectedListener() {
@Override
public boolean onNavigationItemSelected(@NonNull MenuItem item) {
//itemlere tıklanma özelliği ekleme
switch (item.getItemId()){
case R.id.action_home:
//home fragment değişimi
actionBar.setTitle("Home"); //ActionBar başlığını değiştirme
HomeFragment homeFragment = new HomeFragment();
FragmentTransaction ftHome = getSupportFragmentManager().beginTransaction();
ftHome.replace(R.id.content, homeFragment, "");
ftHome.commit();
return true;
case R.id.action_map:
//map fragment değişimi
actionBar.setTitle("Map"); //ActionBar başlığını değiştirme
MapFragment mapFragment = new MapFragment();
FragmentTransaction ftMap = getSupportFragmentManager().beginTransaction();
ftMap.replace(R.id.content, mapFragment, "");
ftMap.commit();
return true;
case R.id.action_users:
//users fragment değişimi
actionBar.setTitle("Users"); //ActionBar başlığını değiştirme
UsersFragment usersFragment = new UsersFragment();
FragmentTransaction ftUsers = getSupportFragmentManager().beginTransaction();
ftUsers.replace(R.id.content, usersFragment, "");
ftUsers.commit();
return true;
case R.id.action_profile:
//profile fragment değişimi
actionBar.setTitle("Profile"); //ActionBar başlığını değiştirme
ProfileFragment profileFragment = new ProfileFragment();
FragmentTransaction ftProfile = getSupportFragmentManager().beginTransaction();
ftProfile.replace(R.id.content, profileFragment, "");
ftProfile.commit();
return true;
}
return false;
}
};
private void checkUserStatus() {
//mevcut kullanıcıyı al
FirebaseUser user = firebaseAuth.getCurrentUser();
if (user != null){
//kullanıcı giriş yapmışsa burada kal
//giriş yapan kullanıcının email i
//profileTxt.setText(user.getEmail());
}
else{
//kullanıcı giriş yapmamışsa main activity'e git
Intent intent = new Intent(DashboardActivity.this, MainActivity.class);
startActivity(intent);
finish();
}
}
@Override
public void onBackPressed() {
super.onBackPressed();
finish();
}
@Override
protected void onStart() {
//uygulamanın başlangıcını konrtol et
checkUserStatus();
super.onStart();
}
//options menu dahil etme
@Override
public boolean onCreateOptionsMenu(Menu menu) {
//menuyu dahil etme
getMenuInflater().inflate(R.menu.main_menu, menu);
return super.onCreateOptionsMenu(menu);
}
//menu itemlerine onClick özelliği aktifleştirme
@Override
public boolean onOptionsItemSelected(@NonNull MenuItem item) {
//itemlerin id'lerini al
int id = item.getItemId();
if (id == R.id.action_logout){
//hesaptan çıkış yap
firebaseAuth.signOut();
checkUserStatus();
}
return super.onOptionsItemSelected(item);
}
}

activity_dashboard.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".DashboardActivity">
//FrameLayout fragmentlerin üstüste gelebilmesi için daha kullanışlıdır
<FrameLayout
android:id="@+id/content"
android:layout_width="match_parent"
android:layout_height="0dp">
</FrameLayout>
//BottomNavigationBar
<com.google.android.material.bottomnavigation.BottomNavigationView
android:id="@+id/navigation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentEnd="false"
android:layout_alignParentBottom="true"
android:background="?android:attr/windowBackground"
app:menu="@menu/bottombar_menu">
</com.google.android.material.bottomnavigation.BottomNavigationView>
</RelativeLayout>

This is what is showing from fragment_profile.xml.

Your question doesn't give information whether you are getting an empty view like above or you are not getting any view. I will try to answer on two ansumption.

1. Empty View
2. No View at all

Empty View

If you are getting empty view then you must put some Logs statement in your database responce, check if that database is returning some value.

public class ProfileFragment extends Fragment {
//Log Statment
private static final String TAG = "ProfileFragment";
......
query.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot snapshot) {
//gerekli veriler gelene kadar kontrol et
for (DataSnapshot ds: snapshot.getChildren()){
//verileri almak için
String name = ""+ ds.child("name").getValue();
String email = ""+ ds.child("email").getValue();
String phone = ""+ ds.child("phone").getValue();
String image = ""+ ds.child("image").getValue();
//set data
nameTxt.setText(name);
emailTxt.setText(email);
phoneTxt.setText(phone);
Log.d(TAG, "onDataChange: \nName: "+name+" email: "+ email);
try {
// resim alınırsa ayarla
Picasso.get().load(image).into(avatar);
} catch (Exception e){
// resim alınırken herangi bir sıkıntı varsa varsayılan olarak ayarla
Picasso.get().load(R.drawable.add_photo_foreground).into(avatar);
}
}
Log.d(TAG, "onDataChange: Data is empty");
}
@Override
public void onCancelled(@NonNull DatabaseError error) {
Log.d(TAG, "onCancelled: "+error);
}
}
}
.........

You can use breakpoints as well to further investigation.

No View at all

If view is not changing on ProileFragment then you must check how you are starting ProfileFragment.

getSupportFragmentManager().beginTransaction().replace(R.id.frgment_container, new ProfileFragment()).commit();

If you are using Navigation Component then make sure you are navigating to correct destination.

I will also suggest you to strcture the code in following format under Profile Fragment -

public class ProfileFragment extends Fragment {
//firebase auth
............
//layout views
..............
public ProfileFragment() {
//boş public constructor gerekli
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view =  inflater.inflate(R.layout.fragment_profile, container, false);
return view;
}
@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
//init firebase
.................
//init layout views
.......................
/* giriş yapan kullanıcıların bilgilerini email yada uid kullanarak çekmek zorundayız
Kullanıcı detaylarını email adreslerini kullanarak çekicez
orderbyChild query kullanarak giriş yapılan email ile email key ini eşleştirerek kullanıcı detaylarına ulaşılıyor
*/
Query query = databaseReference.orderByChild("email").equalTo(user.getEmail());
query.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot snapshot) {
.................
}
@Override
public void onCancelled(@NonNull DatabaseError error) {
...............
}
});
}
}

Edit (activity_dashboard.xml)

Try following layout file for activity_dashboard.xml -

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:tools="http://schemas.android.com/tools"
tools:context=".DashboardActivity">
<FrameLayout
android:id="@+id/content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="?attr/actionBarSize"/>
<com.google.android.material.bottomnavigation.BottomNavigationView
android:id="@+id/navigation"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:layout_alignParentEnd="false"
android:layout_alignParentBottom="true"
android:background="?android:attr/windowBackground"
app:menu="@menu/bottombar_menu"/>
</RelativeLayout>

I am using ?attr/actionBarSize, which is the standard action bar size for android.
Happy Coding !