如何从服务器下载图像如果网址存储在ArrayList中使用异步任务？

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.AsyncTask;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;

private class DownloadImageTask extends AsyncTask<String, Void, Bitmap> {
    protected Bitmap doInBackground(String... urls) {
        String imageUrl = urls[0];
        Bitmap bitmap = null;
        try {
            URL url = new URL(imageUrl);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setDoInput(true);
            connection.connect();
            InputStream input = connection.getInputStream();
            bitmap = BitmapFactory.decodeStream(input);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return bitmap;
    }

    protected void onPostExecute(Bitmap result) {
        // 在这里将下载的图像添加到ArrayList中
        if (result != null) {
            imageArrayList.add(result);
        }
    }
}

ArrayList<Bitmap> imageArrayList = new ArrayList<>();

String imageUrl = "http://example.com/image.jpg";
new DownloadImageTask().execute(imageUrl);