Android, how to toast my simplexml class?

Sorry, I'm quite new in Android... I have an activity which creates an object instance of my class:

file MyActivity.java:

import org.simpleframework.xml.Serializer;
import org.simpleframework.xml.core.Per开发者_如何转开发sister;

public class MyActivity extends Activity {
    Artworks myArtworks;

    ...
    myArtworks = serial.read(Artworks.class, artworksXmlFile);
    ...
}
--------------------------------------------------------------

file Artworks.java:

import org.simpleframework.xml.Element;
import org.simpleframework.xml.ElementList;

@Element
public class Artworks {
    @ElementList(entry = "artwork", inline = true)
    private List<Artwork> list;
    ...
}
--------------------------------------------------------------

file Artwork.java:
public class Artwork {
    // how to use here Toast.makeText(..., text, Toast.LENGTH_SHORT).show() ???
}
--------------------------------------------------------------

How do I use the Toast class (or any UI class) in my class Artwork, which I do never instantiate directly, but it's indirectly created by a call to serial.read(Artworks.class)? How do I do it, exactly?

Thanks in advance!

You can use a "static" helper class to maintain a static reference to your Activity's context. So, before you deserialize your Artwork class, call UtilClass.setContext(getApplicationContext());. Then, within your Artwork class, you can retrieve that context and then do something like Toast.makeText(UtilClass.getContext(), "text", Toast.LENGTH_LONG).show();.

import android.widget.Toast;

public class Artwork {
   Toast.makeText(Artwork.this, "text", Toast.LENGTH_LONG).show();
}