Is there a way to create a spinner just like the html selectbox, which has a text and a value?

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Is there a way to create a spinner just like the html selectbox, which has a text and a value?

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#1 by (-1 votes)

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As I said in the question, I need the data from my spinner to have a value and text, just as it happens to be the selectbox in html. It is important to have a key value so that the user sees a readable text and I can send a number (which is the value) to the server. I've been looking but I can not find anything. Any ideas?

java android

asked by kosode 12.11.2018 в 09:54

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1 answer

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score -1 · Answer 1

Have you worked with classes? What you want to achieve could be solved in the following way.

Create a class with which you have a key and a value.

Then create a list of this class, then pass the list to your adapter for the Spinner.

Then get the selected object in the Spinner.

Extract the key, and send it to the database.

I leave this as a guide:

public class MyItem {
    private String clave;
    private String valor;

    public MyItem(String clave, String valor) {
        this.clave = clave;
        this.valor = valor;
    }

    public String getClave() {
        return clave;
    }

    public void setClave(String clave) {
        this.clave = clave;
    }

    public String getValor() {
        return valor;
    }

    public void setValor(String valor) {
        this.valor = valor;
    }

    @Override
    public String toString() {
        return this.valor;
    }
}

Then create the items:

   @Override
   protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
   //Crear datos de prueba
    ArrayList<MyItem> items = new ArrayList<>();
    items.add(new MyItem("clave1", "Valor1"));
    items.add(new MyItem("clave2", "Valor2"));

    //Crear el adaptador para el spinner
    ArrayAdapter<MyItem> adapter = new ArrayAdapter<MyItem>(this, android.R.layout.simple_expandable_list_item_1, items);
    spinner.setAdapter(adapter);
  }

In the end you just need to get the spinner object and then do the respective get:

    MyItem myItem = (MyItem)spinner.getSelectedItem();
    String miClaveParaBD =  myItem.getClave();