Android Spinner example

strings.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
 
    <string name="app_name">SpinnerDemo</string>
    <string name="country_prompt">Choose a country</string>
 
    <string-array name="country_arrays">
        <item>China</item>
        <item>United States</item>
        <item>Indonesia</item>
        <item>France</item>
        <item>Italy</item>
        <item>Singapore</item>
        <item>New Zealand</item>
        <item>India</item>
    </string-array>
 
</resources>

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="match_parent"
        android:layout_height="wrap_content"
        android:entries="@array/country_arrays"
        android:prompt="@string/country_prompt" />
 
    <Spinner
        android:id="@+id/spinner2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
 
    <Button
        android:id="@+id/btnSubmit"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Submit" />
 
</LinearLayout>

SpinnerDemoActivity.java

package com.cjp.spinnerdemo;


import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.Spinner;
import android.widget.Toast;


public class SpinnerDemoActivity extends Activity {
 private Spinner spinner1, spinner2;
 private Button btnSubmit;
 
 @Override
 public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
 
addItemsOnSpinner2();
addListenerOnButton();
addListenerOnSpinnerItemSelection();
 }
 
 // add items into spinner dynamically
 public void addItemsOnSpinner2() {
 
spinner2 = (Spinner) findViewById(R.id.spinner2);
List<String> list = new ArrayList<String>();
list.add("list 1");
list.add("list 2");
list.add("list 3");
ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this,
android.R.layout.simple_spinner_item, list);
dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner2.setAdapter(dataAdapter);
 }
 
 public void addListenerOnSpinnerItemSelection() {
spinner1 = (Spinner) findViewById(R.id.spinner1);
spinner1.setOnItemSelectedListener(new CustomOnItemSelectedListener());
 }
 
 // get the selected dropdown list value
 public void addListenerOnButton() {
 
spinner1 = (Spinner) findViewById(R.id.spinner1);
spinner2 = (Spinner) findViewById(R.id.spinner2);
btnSubmit = (Button) findViewById(R.id.btnSubmit);
 
btnSubmit.setOnClickListener(new OnClickListener() {
 
 @Override
 public void onClick(View v) {
 
   Toast.makeText(SpinnerDemoActivity.this,
"OnClickListener : " + 
               "\nSpinner 1 : "+ String.valueOf(spinner1.getSelectedItem()) + 
               "\nSpinner 2 : "+ String.valueOf(spinner2.getSelectedItem()),
Toast.LENGTH_SHORT).show();
 }
 
});
 }
}

CustomOnItemSelectedListener.java

package com.cjp.spinnerdemo;


import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.Toast;
 
public class CustomOnItemSelectedListener implements OnItemSelectedListener {
 
  public void onItemSelected(AdapterView<?> parent, View view, int pos,long id) {
Toast.makeText(parent.getContext(), 
"OnItemSelectedListener : " + parent.getItemAtPosition(pos).toString(),
Toast.LENGTH_SHORT).show();
  }
 
  @Override
  public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
  }
 
}