Android Spinner Tutorial

Introduction of Android Spinner

Situation : We want to display a list of states. But want to save space.

For this purpose android spinner control. This control provides a drop down list.

How to code spinner in android

• First get the instance of rating bar.

   spinner1 = (Spinner) findViewById(R.id.spinner1);
   

• Then add items to this spinner.

   
    List<String> list = new ArrayList<String>();
   list.add("Delhi");
   list.add("Bombay");
   list.add("Rajasthan");
   ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this,
    android.R.layout.simple_spinner_item, list);
   dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
   spinner1.setAdapter(dataAdapter);
   
   

  Here we first make list and then add to spinner.

Example to display spinner

1. Make layout file(main.xml) which contains a button. If we click on button it change to screen2.
   
   

   <?xml version="1.0" encoding="utf-8"?>
   <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
       android:id="@+id/linearLayout1"
       android:layout_width="fill_parent"
       android:layout_height="fill_parent"
       android:orientation="vertical" >
    
       <Spinner
           android:id="@+id/spinner1"
           android:layout_width="match_parent"
           android:layout_height="wrap_content" />
    
   </LinearLayout>
   

2. Then apply setOnRatingBarChangeListener
   
   

   public class mainactivity extends Activity {
    
    private Spinner spinner1;
    
    @Override
    public void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     setContentView(R.layout.main);
     addItemsOnSpinner1();
    }
    
    public void addItemsOnSpinner1() {
    
    spinner1 = (Spinner) findViewById(R.id.spinner1);
    List<String> list = new ArrayList<String>();
    list.add("Delhi");
    list.add("Bombay");
    list.add("Rajasthan");
    ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this,
     android.R.layout.simple_spinner_item, list);
    dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    spinner1.setAdapter(dataAdapter);
     }
   }
   
   

3. Output :