Android Basic Spinner Using ArrayAdapter

Spinner is the ordinary dropdown menu available for android. In this tutorial we are going to code a spinner using the arrayAdapter.

Java:

import java.util.ArrayList;  
 import android.app.Activity;  
 import android.os.Bundle;  
 import android.util.Log;  
 import android.view.View;  
 import android.widget.AdapterView;  
 import android.widget.ArrayAdapter;  
 import android.widget.Spinner;  
 public class MainActivity extends Activity implements  
           AdapterView.OnItemSelectedListener {  
      String itemValue;  
      Spinner spinnerOsversions;  
      public void addData() {     }  
      public void onCreate(Bundle bundle) {  
           super.onCreate(bundle);  
           setContentView(R.layout.activity_main);  
           ArrayList arrayList = new ArrayList();  
           arrayList.add("Item 1");  
           arrayList.add("Item 2");  
           arrayList.add("Item 3");  
           arrayList.add("Item 4");  
           arrayList.add("Item 5");  
           spinnerOsversions = (Spinner) findViewById(R.id.spinner1);  
           ArrayAdapter arrayAdapter = new ArrayAdapter(this, R.layout.simplerow,  
                     arrayList);  
           arrayAdapter.setDropDownViewResource(R.layout.simplerow);  
           spinnerOsversions.setAdapter(arrayAdapter);  
           spinnerOsversions  
                     .setOnItemSelectedListener((AdapterView.OnItemSelectedListener) this);  
      }  
      public void onItemSelected(AdapterView<?> adapterView, View view, int n,  
                long l) {  
           spinnerOsversions.setSelection(n);  
           String selectedItem = spinnerOsversions.getSelectedItem().toString();  
           Log.d("selected item ===", selectedItem);  
      }  
      public void onNothingSelected(AdapterView<?> adapterView) {  
      }  
 }  

XML:

simplerow.xml

<?xml version="1.0" encoding="utf-8"?>  
 <TextView xmlns:android="http://schemas.android.com/apk/res/android"  
   android:id="@id/rowTextView"  
   android:layout_width="fill_parent"  
   android:layout_height="wrap_content"  
   android:padding="10.0dip"  
   android:textSize="16.0sp" />  

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>  
 <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="fill_parent"  
     android:layout_height="wrap_content" />  
 </LinearLayout>       

That's all, now run our app!