Mit dem Objekt-array eine Liste als spinner adapter

Hallo, was Sie tun müssen, ist ziemlich einfach, zu Ihrer Klasse Kontakt, überschreiben Sie die toString () - Methode und den Namen der Ansprechpartner.

schau dir das Beispiel an. es ist auch erhältlich 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;
        }
    }

}

Ausgabe

InformationsquelleAutor Pankaj Nimgade