Bring only the name in Listview, but relate to the ID

Question

I have a Webservice that lists all my users and brings users from the bank.

I have a class

Usuario {
int id;
String nome;
}

With its builders, gets and sets, etc.

And I can return all my users.

However, I want to play all of this on a Listview. I got it. But I managed using an Arrayadapter of Strings and a list of String, IE, step only the name.

How will I be able to associate this name with your bank id so I can recover change the screen using the Onitemclicklistener() event if I just pass the name?

Can you do this without having to display the id on the screen? (without using two textviews, etc).

I want to use a same Listview, just show the name. But I have to filter on the other screen by id using putextra, etc.

My difficulty is to associate the ID to the Name, I’ve tried creating a list of Users, but it’s not the way I want it.

And now what I do?

Answer 1

How do you intend only that the list present the nome a simple way is to do the Override of the method toString() of your class User:

public class Usuario {
    int id;
    String nome;
    .....
    .....
    @Override
    public String toString() {
        return nome;
    }
}  

_{Note: The Arrayadapter uses the method toString() of the object it contains to obtain the value to be displayed in the list.}

Then use normally, only instead of ArrayList<String> is ArrayList<Usuario>:

ArrayList<Usuario> usuarios = new ArrayList<Usuario>();

ListView listView = (ListView) findViewById(R.id.list);

ArrayAdapter<Usuario> adapter = 
            new ArrayAdapter<Usuario>(this, android.R.layout.simple_list_item_1, usuarios);
listView.setAdapter(adapter);  

In the onItemClick() you can get the id of the item clicked as follows:

listview.setOnItemClickListener(new OnItemClickListener(){
    @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id){
        Usuario usuario = (Usuario)parent.getAdapter().getItem(position);
        String id = usuario.getId();
    }
});

Note well: Although in this case the correct way would be to implement a custom Adapter.