Store Data In Firebase Realtime DB (Name, Phone number, E-mail)

1. Activity (activity_main.xml)

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:padding="16dp"> <EditText android:id="@+id/nameEditText" android:layout_width="match_parent" android:layout_height="wrap_content" android:hint="Enter Name"/> <EditText android:id="@+id/phoneEditText" android:layout_width="match_parent" android:layout_height="wrap_content" android:hint="Enter Phone Number" android:inputType="phone"/> <EditText android:id="@+id/emailEditText" android:layout_width="match_parent" android:layout_height="wrap_content" android:hint="Enter Email" android:inputType="textEmailAddress"/> <Button android:id="@+id/saveButton" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="Save"/> <Button android:id="@+id/open" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="sec"/> </LinearLayout>

1. Activity (mainactivity.java)

import android.annotation.SuppressLint; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.Toast; import androidx.appcompat.app.AppCompatActivity; import com.google.firebase.database.DatabaseReference; import com.google.firebase.database.FirebaseDatabase; public class MainActivity extends AppCompatActivity { private EditText nameEditText, phoneEditText, emailEditText; private Button saveButton, open; private DatabaseReference databaseReference; @SuppressLint("MissingInflatedId") @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); nameEditText = findViewById(R.id.nameEditText); phoneEditText = findViewById(R.id.phoneEditText); emailEditText = findViewById(R.id.emailEditText); saveButton = findViewById(R.id.saveButton); open = findViewById(R.id.open); // Initialize Firebase Database databaseReference = FirebaseDatabase.getInstance().getReference("Users"); saveButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { saveUserData(); } }); open.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Intent intent = new Intent(MainActivity.this, feedback_act.class); startActivity(intent); } }); } private void saveUserData() { String name = nameEditText.getText().toString(); String phone = phoneEditText.getText().toString(); String email = emailEditText.getText().toString(); if (name.isEmpty() || phone.isEmpty() || email.isEmpty()) { Toast.makeText(this, "Please fill all fields", Toast.LENGTH_SHORT).show(); return; } // Create a unique ID for each user String userId = databaseReference.push().getKey(); // Create User object User1 user1 = new User1(name, phone, email); // Save user data to Firebase if (userId != null) { databaseReference.child(userId).setValue(user1); Toast.makeText(this, "Data Saved", Toast.LENGTH_SHORT).show(); // Move to RecyclerView Activity after saving Intent intent = new Intent(MainActivity.this, UserListActivity.class); startActivity(intent); } } } // User Model Class class User { public String name; public String phone; public String email; public User() { // Default constructor required for Firebase } public User(String name, String phone, String email) { this.name = name; this.phone = phone; this.email = email; } }