Introduction

In Android applications, CheckBox and RadioButton are used to collect user choices.

• CheckBox allows users to select multiple options from a list.
• RadioButton allows users to select only one option from a group.

These components are commonly used in registration forms, surveys, settings pages, and preference selections.

Step 1: Create a New Android Project

1. Open Android Studio
2. Click New Project
3. Select Empty Activity
4. Choose Java as the programming language
5. Click Finish

Step 2: activity_main.xml

Open res → layout → activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<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="20dp">    

<!-- CheckBox Section -->    
<TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Select Your Hobbies"
        android:textSize="18sp"/>    

<CheckBox
        android:id="@+id/cbMusic"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Music"/>    

<CheckBox
        android:id="@+id/cbSports"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Sports"/>    

<CheckBox
        android:id="@+id/cbReading"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Reading"/>    

<!-- Radio Button Section -->    
<TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Select Gender"
        android:textSize="18sp"
        android:layout_marginTop="20dp"/>    

<RadioGroup
        android:id="@+id/radioGroup"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">        

<RadioButton
            android:id="@+id/rbMale"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Male"/>        

<RadioButton
            android:id="@+id/rbFemale"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Female"/>    
</RadioGroup>

</LinearLayout>

Output

When the application runs:

• Users can select multiple hobbies using CheckBox.
• Users can select one gender using RadioButton.
• The selected options can be displayed using a Toast message.

Conclusion

In this program, we designed CheckBox and RadioButton components in an Android application.

• CheckBox allows selecting multiple options.
• RadioButton allows selecting only one option from a group.

These components are widely used in forms, surveys, and user preference settings.