Work With Spinners in ANDROID

Step 01
Make an xml file in res->values name it as arrays

 <string-array name="douse">
        <item>Half</item>
        <item>One</item>
        <item>One and Half</item>
        <item>Two</item>
        <item>Two and half</item>
  </string-array>

Step 02
Cording of java file

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;

public class Addpills extends Activity implements AdapterView.OnItemSelectedListener{

    Spinner spin_douse;

@Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.addpills);
        //load page
        spin_douse =(Spinner)findViewById(R.id.sp_I_douse_addpills);//get spinner to java from xml
        ArrayAdapter adapter_01 = ArrayAdapter.createFromResource(this, R.array.douse, android.R.layout.simple_spinner_item);
//add the string array which is on [res->values->arrays.xml] using arrayadapter to the spinner
        spin_douse.setAdapter(adapter_01);
        spin_douse.setOnItemSelectedListener(this);
}

@Override
    public void onItemSelected(AdapterView<?> adapterView, View view, int i,
            long l) {
                //cord what happen when you select value on spinner
         // TODO Auto-generated method stub
        TextView res_text=(TextView)view;
        Toast.makeText(this, "You select "+res_text.getText(), Toast.LENGTH_SHORT).show();
        //make a message when click the selection
    }

    @Override
    public void onNothingSelected(AdapterView<?> arg0) {
        // TODO Auto-generated method stub
       
    }
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
   
   

}