How to create a login page in Android Studio using a database

How to create a login page in Android Studio using a database

Welcome, Android Studio developers! In this article, we will be discussing how to create a login page in your Android Studio application using a database.

Before we dive into the specifics of creating a login page in Android Studio using a database, let’s first understand what a login page is. A login page is a screen that users see when they first launch your application or website. It prompts users to enter their credentials, such as a username and password, so that they can gain access to the application or website.

Creating the Login Page in Android Studio

1. Open your Android Studio project and navigate to the “res/layout” folder. Create a new XML file called “login.xml”.

<?xml version"1.0" encoding"utf-8"?>
<RelativeLayout 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">

tools:context”.LoginActivity”>

<TextView
    android:id"@+id/loginText"
    android:layout_width"wrap_content"
    android:layout_height"wrap_content"
    android:text"Welcome!">

<EditText
android:id"@+id/usernameEditText"
android:layout_width"match_parent"
android:layout_height"wrap_content"
android:hint"Enter your username">

<EditText
android:id"@+id/passwordEditText"
android:layout_width"match_parent"
android:layout_height"wrap_content"
android:inputType"textPassword"
android:hint"Enter your password">

<Button
android:id"@+id/loginButton"
android:layout_width"wrap_content"
android:layout_height"wrap_content"
android:text"Login">

2. In your Java code, create a new class called “LoginActivity”. This class should extend the AppCompatActivity class and override the onCreate() method.

java
public class LoginActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.login);
Button loginButton = findViewById(R.id.loginButton);
loginButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
// Perform login logic here
}
});
}
}

3. In your AndroidManifest.xml file, add the following intent-filter to the activity element:

xml
<activity android:name".LoginActivity">

Creating a Database in Android Studio

To create a database in Android Studio, follow these steps:

  1. Create a new package called “database” in your app directory.
  2. Add a new Java class called “AppDatabase.java”.
  3. In the AppDatabase class, define an abstract method called “userDao()” that returns an instance of the UserDao interface.
  4. Create a new Java class called “UserDao.java”. This class should implement the UserDao interface and define CRUD operations for the User table in the database.
  5. Add the following dependencies to your app-level build.gradle file:

groovy
dependencies {
implementation ‘androidx.room:room-runtime:2.4.2’

Creating a Database in Android Studio
implementation ‘androidx.room:room-ktx:2.4.2’
kapt ‘androidx.room:room-compiler:2.4.2’
}

That’s it! You now have a basic SQLite database set up in your Android app using Room.

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