This guide walks through implementing a rotating image banner in an Android application using the popular Banner library. The goal is to display a set of images that automatically slide at intervals, commonly used for promotions or news highlights.

Step	Action
1	Set up a new Android project
2	Enclude the Banner dependency
3	Design the layout with a Banner component
4	Initialize and configure the Banner in the activity
5	Prepare the image data source

Step 1: Project Setup

Create a new Android project in Android Studio with an empty activity. Ensure the minimum SDK supports the library requirements (typical API 14+).

Step 2: Add the Banner Dependency

Open the build.gradle file at the module level and add the following line inside the dependencies block:

implementation 'com.youth.banner:banner:1.4.10'

Sync the project to download the library.

Step 3: Layout Configuration

In your activity's XML layout file, insert a Banner view. Customize its dimensions as needed:

<com.youth.banner.Banner
    android:id="@+id/adBanner"
    android:layout_width="match_parent"
    android:layout_height="200dp" />

Step 4: Initialize the Carousel

In the Activity, obtain a reference to the Banner and set up a custom image loader. The library uses an interface; a common implementation relies on Glide:

// Inside onCreate()
Banner banner = findViewById(R.id.adBanner);
banner.setImages(imageUrls)
      .setImageLoader(new GlideImageLoader())
      .start();

You need to create a class that implements ImageLoader. Example:

public class GlideImageLoader implements ImageLoader {
    @Override
    public void displayImage(Context context, Object path, ImageView imageView) {
        Glide.with(context)
             .load((String) path)
             .into(imageView);
    }
}

Step 5: Supply Image Data

Prepare a list of image URLs (or resource IDs) and pass it to the banner. For simplicity, use String URLs:

List<String> imageUrls = new ArrayList<>();
imageUrls.add("https://example.com/banner1.jpg");
imageUrls.add("https://example.com/banner2.jpg");
imageUrls.add("https://example.com/banner3.jpg");
banner.setImages(imageUrls);

The banner will automatically cycle through these images with default indicators and auto-scroll enabled. You can further customize indicators, scroll duration, and item click listeners using the library's builder methods.

With these steps completed, the banner should display and rotate through the provided images on the device or emulator.