android - Image cache and display listview

Question

Good afternoon, my friends, The thing is, I’m going to use Volley to get the data from the webservice, and so I write the list to my local BD with Sqlite.

In this webservice will come a JSON with items, each item has its data and an image. I need to cache this image to show in a listview and later in a detail screen. In the future the user will clean these items, thus wiping their images as well.

Well, how can I cache these images and link to each item saved in my BD?

EDIT 1

I will, at 90%, be offline. I will only be online to synchronize and download the updated server items

Answer 1

How you will adopt various resources to facilitate development, use the Picasso and let him manage it for you.

Through a Target you can intercept and save the image. Example:

public class MeuTarget implements Target
{
    private final WeakReference<ContentResolver> resolver;
    private final String name;
    private final String desc;

    public TargetPhoneGallery(ContentResolver r, String name, String desc)
    {
        this.resolver = new WeakReference<ContentResolver>(r);
        this.name = name;
        this.desc = desc;
    }

    @Override
    public void onPrepareLoad (Drawable arg0)
    {
    }

    @Override
    public void onBitmapLoaded (Bitmap bitmap, LoadedFrom arg1)
    {
       //sua implementacao para guardar o bitmap.
    }

    @Override
    public void onBitmapFailed (Drawable arg0)
    {
    }
}

Picasso.with(context).load(image[position]).into(new MeuTarget(view.getContentResolver(), "nome-imagem", "descricao"));