androidAdapter.java

/**
 * {@link WordAdapter} is an {@link ArrayAdapter} that can provide the layout for each list
 * based on a data source, which is a list of {@link Word} objects.
 *
 */
public class WordAdapter extends ArrayAdapter<Word> {

     WordAdapter(@NonNull Context context, ArrayList<Word> wordArrayList) {
        // Here, we initialize the ArrayAdapter's internal storage for the context and the list.
        // the second argument is used when the ArrayAdapter is populating a single TextView.
        // Because this is a custom adapter, the adapter is not
        // going to use this second argument, so it can be any value. Here, we used 0.
        super(context, 0, wordArrayList);
    }

    /**
     * Provides a view for an AdapterView (ListView, GridView, etc.)
     *
     * @param position    The position in the list of data that should be displayed in the
     *                    list item view.
     * @param convertView The recycled view to populate.
     * @param parent      The parent ViewGroup that is used for inflation.
     * @return The View for the position in the AdapterView.
     */
    @NonNull
    @Override
    public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
        /// Check if the existing view is being reused, otherwise inflate the view
        View listItemView = convertView;
        if (listItemView == null) {
            listItemView = LayoutInflater.from(getContext())
                    .inflate(R.layout.list_item, parent, false);
        }

        /// Get the {@link Word} object located at this position in the list
        Word currentAndroidFlavor = getItem(position);

        // Find the TextView in the list_item.xml layout with the ID version_name
        TextView nameTextView = listItemView.findViewById(R.id.miwokWord);
        // Get the text from the current object and
        // set this text on the name TextView
        nameTextView.setText(currentAndroidFlavor.getMiwokWord());

        // Find the TextView in the list_item.xml layout
        TextView numberTextView = listItemView.findViewById(R.id.englishWord);
        // Get the version number from the current object and
        // set this text on the number TextView
        numberTextView.setText(currentAndroidFlavor.getEnglishWord());

        // Return the whole list item layout (containing 2 TextViews)
        // so that it can be shown in the ListView
        return listItemView;
    }
}