Android Spinner Dropdown Example

In this post, we are going to see about Android Spinner Dropdown example.

Android Spinner is a UI widget which have dropdown. Once you click on dropdown , you can select one option among various options. I am going to put static data in android spinner and select one of value from them.

Source code:

Download Github Source code

Step 1 :Creating Project

Create an android application project named “SpinnerDropdownExampleApp”.

Step 2 : Creating Layout

Change res ->layout -> activity_main.xml as below:

<?xml version="1.0" encoding="utf-8"?>

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

xmlns:tools="http://schemas.android.com/tools"

android:id="@+id/activity_main"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:paddingBottom="@dimen/activity_vertical_margin"

android:paddingLeft="@dimen/activity_horizontal_margin"

android:paddingRight="@dimen/activity_horizontal_margin"

android:paddingTop="@dimen/activity_vertical_margin"

tools:context="com.java2blog.spinnerdropdownexampleapp.MainActivity">

<TextView

android:id="@+id/textview"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="Select country:"

<Spinner

android:id="@+id/spinner"

android:layout_below="@+id/textview"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

</RelativeLayout>

Step 3 : Creating MainActivity

Change src/main/packageName/MainActivity.java as below:

package com.java2blog.spinnerdropdownexampleapp;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.AdapterView;

import android.widget.ArrayAdapter;

import android.widget.Spinner;

import android.widget.Toast;

import android.widget.AdapterView.OnItemSelectedListener;

import java.util.ArrayList;

import java.util.List;

public class MainActivity extends AppCompatActivity implements OnItemSelectedListener {

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

// get Spinner reference

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

// Spinner click listener

spinner.setOnItemSelectedListener(this);

// Spinner Drop down elements

List countries = new ArrayList();

countries.add("India");

countries.add("Nepal");

countries.add("China");

countries.add("Bhutan");

// Creating array adapter for spinner

ArrayAdapter dataAdapter = new ArrayAdapter(this, android.R.layout.simple_spinner_item, countries);

// Drop down style will be listview with radio button

dataAdapter.setDropDownViewResource(android.R.layout.select_dialog_singlechoice);

// attaching data adapter to spinner

spinner.setAdapter(dataAdapter);

}

@Override

public void onItemSelected(AdapterView parent, View view, int position, long id) {

// getting selected item

String item = parent.getItemAtPosition(position).toString();

// Showing selected spinner item in toast

Toast.makeText(parent.getContext(), "Selected Country: " + item, Toast.LENGTH_LONG).show();

}

public void onNothingSelected(AdapterView arg0) {

}

We have created ArrayAdapter and attached it with Spinner in similar way we have done for Simple Android ListView.
If you notice, we have also implemented OnItemSelectedListener for listening to item selection in drop down.

Step 4 : Running the app

When you run the app, you will get below screen:

When you click on dropdown and select china, you will get below screen.

After selecting china, you will get below screen.

We are done with Android Spinner Dropdown Example. Please comment if you are facing any issue while implementing it.

Java2Blog

Android Spinner Dropdown Example

Source code:

Step 1 :Creating Project

Step 2 : Creating Layout

Step 3 : Creating MainActivity

Step 4 : Running the app

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Source code:

Step 1 :Creating Project

Step 2 : Creating Layout

Step 3 : Creating MainActivity

Step 4 : Running the app

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