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Question

I tried to register in the application I made, everything works fine and directs me to LoginActivity, but the data is not uploaded to the database and when I enter the name and password, the login doesn’t work.

file RgistrasiActifity.java

package com.example.wisata;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.Toast;

import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;

public class RegisterActivity extends AppCompatActivity {

    private EditText editTextName;
    private EditText editTextEmail;
    private EditText editTextPassword;
    private ImageView imageViewRegister;
    private DatabaseReference databaseReference;

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

        // Initialize Firebase Database
        databaseReference = FirebaseDatabase.getInstance().getReference("users");

        // Initialize views
        editTextName = findViewById(R.id.editTextName);
        editTextEmail = findViewById(R.id.editTextEmail);
        editTextPassword = findViewById(R.id.editTextPassword);
        imageViewRegister = findViewById(R.id.imageViewRegister);

        imageViewRegister.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                registerUser();
            }
        });
    }

    private void registerUser() {
        // Get user input
        String name = editTextName.getText().toString().trim();
        String email = editTextEmail.getText().toString().trim();
        String password = editTextPassword.getText().toString().trim();

        // Validate input
        if (name.isEmpty() || email.isEmpty() || password.isEmpty()) {
            Toast.makeText(RegisterActivity.this, "Please fill in all fields", Toast.LENGTH_SHORT).show();
            return;
        }

        // Save user data to Firebase Database
        String userId = email.replace(".", "_"); // Menggunakan email sebagai kunci unik
        databaseReference.child(userId).child("name").setValue(name);
        databaseReference.child(userId).child("email").setValue(email);
        databaseReference.child(userId).child("password").setValue(password);

        // Show success message and navigate to login activity
        Toast.makeText(RegisterActivity.this, "Registration Successful", Toast.LENGTH_SHORT).show();
        startActivity(new Intent(RegisterActivity.this, LoginActivity.class));
        finish();
    }


}

file activity_register.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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"
    android:background="#F8EEEC"
    tools:context=".RegisterActivity">

    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical">

            <ImageView
                android:id="@+id/imageView9"
                android:layout_width="match_parent"
                android:layout_height="300dp"
                android:layout_margin="16dp"
                android:scaleType="fitXY"
                app:srcCompat="@drawable/accss" />

            <TextView
                android:id="@+id/textView11"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginStart="32dp"
                android:layout_marginEnd="32dp"
                android:text="Buat Akun"
                android:textAlignment="center"
                android:textColor="@color/biruT"
                android:textSize="40sp"
                android:textStyle="bold" />

            <EditText
                android:id="@+id/editTextName"
                android:layout_width="match_parent"
                android:layout_height="50dp"
                android:layout_marginStart="32dp"
                android:layout_marginTop="16dp"
                android:layout_marginEnd="32dp"
                android:background="@drawable/edittext_background"
                android:hint="Nama"
                android:inputType="text"
                android:padding="8dp"
                android:textColorHint="#756C6C" />

            <EditText
                android:id="@+id/editTextEmail"
                android:layout_width="match_parent"
                android:layout_height="50dp"
                android:layout_marginStart="32dp"
                android:layout_marginTop="16dp"
                android:layout_marginEnd="32dp"
                android:background="@drawable/edittext_background"
                android:hint="Email"
                android:inputType="textEmailAddress"
                android:padding="8dp"
                android:textColorHint="#756C6C" />

            <EditText
                android:id="@+id/editTextPassword"
                android:layout_width="match_parent"
                android:layout_height="50dp"
                android:layout_marginStart="32dp"
                android:layout_marginTop="16dp"
                android:layout_marginEnd="32dp"
                android:background="@drawable/edittext_background"
                android:hint="Kata Sandi"
                android:inputType="textPassword"
                android:padding="8dp"
                android:textColorHint="#756C6C" />

            <ImageView
                android:id="@+id/imageViewRegister"
                android:layout_width="wrap_content"
                android:layout_height="150dp"
                android:clickable="true"
                android:focusable="true"
                android:src="@drawable/daftar" />



        </LinearLayout>
    </ScrollView>
</androidx.constraintlayout.widget.ConstraintLayout>

file LoginActifity.java

package com.example.wisata;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TextView;
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;

public class LoginActivity extends AppCompatActivity {

    private static final String TAG = "LoginActivity";
    private EditText editTextName;
    private EditText editTextPassword;
    private ImageView imageViewLogin;
    private TextView textViewRegister;
    private DatabaseReference databaseReference;

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

        // Initialize views
        editTextName = findViewById(R.id.editTextName);
        editTextPassword = findViewById(R.id.editTextPassword);
        imageViewLogin = findViewById(R.id.imageView10);
        textViewRegister = findViewById(R.id.textView12);

        // Initialize Firebase Database
        databaseReference = FirebaseDatabase.getInstance().getReference("users");

        // Set up login button click listener
        imageViewLogin.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String email = editTextName.getText().toString().trim();
                String password = editTextPassword.getText().toString().trim();

                if (validateInputs(email, password)) {
                    loginUser(email, password);
                } else {
                    Toast.makeText(LoginActivity.this, "Please fill in all fields", Toast.LENGTH_SHORT).show();
                }
            }
        });

        // Set up register text click listener
        textViewRegister.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Log.d(TAG, "Register button clicked");
                Intent intent = new Intent(LoginActivity.this, RegisterActivity.class);
                startActivity(intent);
            }
        });
    }

    // Method to validate name and password
    private boolean validateInputs(String email, String password) {
        return !email.isEmpty() && !password.isEmpty();
    }

    // Method to login user
    private void loginUser(String email, String password) {
        String userId = email.replace(".", "_"); // Menggunakan email sebagai kunci unik

        databaseReference.child(userId).addListenerForSingleValueEvent(new ValueEventListener() {
            @Override
            public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
                if (dataSnapshot.exists()) {
                    String dbPassword = dataSnapshot.child("password").getValue(String.class);
                    if (dbPassword != null && dbPassword.equals(password)) {
                        // Login successful
                        Toast.makeText(LoginActivity.this, "Login Successful", Toast.LENGTH_SHORT).show();
                        startActivity(new Intent(LoginActivity.this, MainActivity.class));
                        finish();
                    } else {
                        // Password incorrect
                        Toast.makeText(LoginActivity.this, "Incorrect Password", Toast.LENGTH_SHORT).show();
                    }
                } else {
                    // User does not exist
                    Toast.makeText(LoginActivity.this, "User does not exist", Toast.LENGTH_SHORT).show();
                }
            }

            @Override
            public void onCancelled(@NonNull DatabaseError databaseError) {
                // Handle possible errors
                Log.e(TAG, "Database error: " + databaseError.getMessage());
                Toast.makeText(LoginActivity.this, "Database error: " + databaseError.getMessage(), Toast.LENGTH_SHORT).show();
            }
        });
    }
}

file activity_login.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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=".LoginActivity">

    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#F8EEEC">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical">

            <ImageView
                android:id="@+id/imageView9"
                android:layout_width="381dp"
                android:layout_height="371dp"
                android:scaleType="fitXY"
                android:src="@drawable/accss"
                app:srcCompat="@drawable/accss" />

            <TextView
                android:id="@+id/textView11"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginLeft="32dp"
                android:layout_marginRight="32dp"
                android:text="Selamat Datang"
                android:textAlignment="center"
                android:textColor="@color/biruT"
                android:textSize="40sp"
                android:textStyle="bold" />

            <EditText
                android:id="@+id/editTextName"
                android:layout_width="match_parent"
                android:layout_height="50dp"
                android:layout_marginStart="32dp"
                android:layout_marginTop="16dp"
                android:layout_marginEnd="32dp"
                android:background="@drawable/edittext_background"
                android:ems="10"
                android:hint="Nama"
                android:inputType="text"
                android:padding="8dp"
                android:textColorHint="#756C6C" />

            <EditText
                android:id="@+id/editTextPassword"
                android:layout_width="match_parent"
                android:layout_height="50dp"
                android:layout_marginStart="32dp"
                android:layout_marginTop="16dp"
                android:layout_marginEnd="32dp"
                android:background="@drawable/edittext_background"
                android:ems="10"
                android:hint="Password"
                android:inputType="text|textPassword"
                android:padding="8dp"
                android:textColorHint="#756C6C" />

            <ImageView
                android:id="@+id/imageView10"
                android:layout_width="200dp"
                android:layout_height="200dp"
                android:layout_gravity="center"
                android:src="@drawable/masuk"
                app:srcCompat="@drawable/masuk" />

            <TextView
                android:id="@+id/textView12"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="Belum punya akun? Daftar"
                android:textAlignment="center"
                android:textSize="16sp"
                android:textStyle="bold" />

        </LinearLayout>
    </ScrollView>
</androidx.constraintlayout.widget.ConstraintLayout>

Thiết kế website giá rẻ

Danh mục

why registration data is not uploaded to firebase