?how i can add items in adapter from other thread class كيف اضيف عنصر الى adapter

كود :

/* this is the class which i wont to add item for adapter*/

 

    public class ADDmess extends Thread {

    DiscussArrayAdapter adapter;

    ADDmess(DiscussArrayAdapter adapterIn){

    adapter=adapterIn;

    }

    public void run() {

    adapter.add(new OneComment(true,"HELLO"));

    }

 

/*this is in the main activity when i pass button*/

    

    private DiscussArrayAdapter adapter;

    private ListView lv;

    lv = (ListView) findViewById(R.id.lstLocalMess);

    adapter = new DiscussArrayAdapter(getApplicationContext(), R.layout.listitem_discuss);

    lv.setAdapter(adapter);

    

    new ADDmess(adapter).start();