Android Studio Tutorials - Love Calculator app sample coding Java

Here is a sample Java code for a Love Calculator app in Android Studio. The app takes the names of two individuals as input and calculates a love percentage based on a random value between 1 and 100.

in activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="16dp"
    tools:context=".MainActivity">

    <EditText
        android:id="@+id/name1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="Enter name 1"
        android:inputType="text"
        android:maxLines="1" />

    <EditText
        android:id="@+id/name2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="Enter name 2"
        android:inputType="text"
        android:maxLines="1" />

    <Button
        android:id="@+id/calculateButton"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Calculate" />

    <TextView
        android:id="@+id/resultText"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        android:textAlignment="center"
        android:textSize="24sp" />

</LinearLayout>

in MainActivity.java

import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;

import java.util.Random;

public class MainActivity extends AppCompatActivity {

    private EditText name1EditText;
    private EditText name2EditText;
    private TextView resultTextView;

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

        name1EditText = findViewById(R.id.name1);
        name2EditText = findViewById(R.id.name2);
        resultTextView = findViewById(R.id.resultText);

        Button calculateButton = findViewById(R.id.calculateButton);
        calculateButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String name1 = name1EditText.getText().toString().trim();
                String name2 = name2EditText.getText().toString().trim();

                if (TextUtils.isEmpty(name1) || TextUtils.isEmpty(name2)) {
                    Toast.makeText(MainActivity.this, "Please enter both names", Toast.LENGTH_SHORT).show();
                    return;
                }

                int lovePercentage = new Random().nextInt(100) + 1;
                String result = String.format("%s and %s are %d%% compatible", name1, name2, lovePercentage);
                resultTextView.setText(result);
            }
        });
    }
}

Android Studio Tutorials