Use object array list as spinner adapter

Question

I got this ArrayList of objects, and i need to set it as my spinner's adapter like this:

ArrayList<Contact> contactlist= new ArrayList<Contact>();
contactlist.add("Gabe");
contactlist.add("Mark");
contactlist.add("Bill");
contactlist.add("Steve");

ArrayAdapter adapter = new ArrayAdapter(this, android.R.layout.simple_spinner_item, contactlist);
    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

contactsSpinner.setAdapter(adapter);

This is a example of my Contact object, it only have two variables, Name and ID

Contact contact = new Contact();
    contact.setName("Gabe")
    contact.setID("14575")

I need to make the spinner show the name of the contact from the ArrayList because it's showing the contact address in the memory, and when selected, I need to return the contact ID, to perform another operation. How can I do this?

It's not clear to me what your question is exactly, or even how many questions you're asking. Can you explain what the code is doing that's incorrect, or exactly what you need it to do that it isn't doing? — nasch
– nasch, Commented Jan 15, 2016 at 0:01

pRaNaY · Accepted Answer · 2018-05-16 11:07:52Z

Hi what you need to do is pretty easy, to your class Contact, override the toString() method in it and return the name of the contact.

look at the example. it is also available in github

public class SpinnerTestOneActivity extends AppCompatActivity {

    private Spinner spinner;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_spinner_test_one);
        Toolbar toolbar = (Toolbar) findViewById(R.id.my_custom_toolbar);
        setSupportActionBar(toolbar);

        getSupportActionBar().setDisplayHomeAsUpEnabled(true);

        initializeUI();
    }

    private void initializeUI() {

        spinner = (Spinner) findViewById(R.id.SpinnerTestOneActivity_spinner);

        ArrayList<Contact> contacts = new ArrayList<>();

        for (int i = 0; i < 10; i++) {
            contacts.add(new Contact("Name_" + i, "Id_" + i));
        }

        ArrayAdapter<Contact> adapter =
                new ArrayAdapter<Contact>(getApplicationContext(),  android.R.layout.simple_spinner_dropdown_item, contacts);
        adapter.setDropDownViewResource( android.R.layout.simple_spinner_dropdown_item);

        spinner.setAdapter(adapter);

    }

    private class Contact {
        private String contact_name;
        private String contact_id;

        public Contact() {
        }

        public Contact(String contact_name, String contact_id) {
            this.contact_name = contact_name;
            this.contact_id = contact_id;
        }

        public String getContact_name() {
            return contact_name;
        }

        public void setContact_name(String contact_name) {
            this.contact_name = contact_name;
        }

        public String getContact_id() {
            return contact_id;
        }

        public void setContact_id(String contact_id) {
            this.contact_id = contact_id;
        }

        /**
         * Pay attention here, you have to override the toString method as the
         * ArrayAdapter will reads the toString of the given object for the name
         *
         * @return contact_name
         */
        @Override
        public String toString() {
            return contact_name;
        }
    }

}

output

Vikash Sharma · Accepted Answer · 2021-06-20 19:31:09Z

0

One more robust solution can be taking the only value of what needs to be displayed and made one more list.

private ArrayAdapter adapter;
private List<CategoryHelper> categoryList = STORE.getCategoryList();
private List<String> names=new ArrayList<>();

adapter = new ArrayAdapter<>(getActivity(),
                android.R.layout.simple_spinner_item, names);
        adapter.setDropDownViewResource(android.R.layout
                .simple_spinner_dropdown_item);
        spinner.setAdapter(adapter);

   for(CategoryHelper helper:categoryList){
          names.add(helper.getName());
       }
       
       adapter.notifyDataSetChanged();

answered Jun 20, 2021 at 19:31

Vikash Sharma

5498 silver badges13 bronze badges

Comments

ledenda · Accepted Answer · 2022-03-14 18:00:50Z

0

in kotlin val adapter02: ArrayAdapter = ArrayAdapter( applicationContext, android.R.layout.simple_spinner_dropdown_item, sArray ) adapter02.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item)

   adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item)
   spinner.adapter = adapter02

answered Mar 14, 2022 at 18:00

ledenda

11 bronze badge

Collectives™ on Stack Overflow

Use object array list as spinner adapter

3 Answers 3

Comments

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related