How to create Spinner and perform action in Android

Open main XML layout and drop Spinner widget or paste below code:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    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>


Now open Your Java File and paste below code:

package sel.listG; //package name

import android.os.Bundle;

import android.view.View;

import android.widget.AdapterView;

import android.widget.AdapterView.OnItemSelectedListener;

import android.widget.ArrayAdapter;

import android.widget.Spinner;

import android.widget.Toast;

import android.app.Activity;

public class MainActivity extends Activity implements OnItemSelectedListener {

      String values[]={"Select One","January", "July", "June", "Ravi", "Ravinder", "Abhishek", "Abhinav", "Harkishore", "Hardev"};

      @Override

      protected void onCreate(Bundle savedInstanceState) {

            super.onCreate(savedInstanceState);

            setContentView(R.layout.activity_main);

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

            ArrayAdapter<?> adapter=new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, values);

//you can left the below one line because it is merging two layout

            adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

            lv.setAdapter(adapter);

            lv.setOnItemSelectedListener(this);          

      }

      @Override

      public void onItemSelected(AdapterView<?> a, View v, int pos,long id)

      {

Toast.makeText(getApplicationContext(),a.getItemAtPosition(pos)+"Selected", Toast.LENGTH_SHORT).show();

           

      }

      @Override

      public void onNothingSelected(AdapterView<?> arg0) {

            // TODO Auto-generated method stub

           

      }

 }

Now Run your code...