Android Simple Spinner Example

Android spinner is used to display a drop down list to be selected by user. To make android spinner working, just follow these simple steps.


1. Create activity layout activity_spinner.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="12dp">

    <Spinner
        android:id="@+id/spinner"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true">

    </Spinner>

</RelativeLayout>

2. Copy and paste array of string below to strings.xml file inside values folder.

<string-array name="month_array">
        <item>January</item>
        <item>Febuary</item>
        <item>March</item>
        <item>April</item>
        <item>May</item>
        <item>June</item>
        <item>July</item>
        <item>August</item>
        <item>September</item>
        <item>October</item>
        <item>November</item>
        <item>December</item>
 </string-array>

3. Make activity class SpinnerActivity.java

package com.example.myapplication.spinner;

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

import com.example.myapplication.R;

/**
 * Created by SONY on 16/10/2016.
 */
public class SpinnerActivity extends Activity {
    private Spinner spinner;
    private ArrayAdapter<CharSequence> spinnerAdapter;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_spinner);
        spinner = (Spinner) findViewById(R.id.spinner);
        spinnerAdapter = ArrayAdapter.createFromResource(this,
                R.array.month_array, android.R.layout.simple_spinner_item);
        spinnerAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spinner.setAdapter(spinnerAdapter);

        spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
                // do something after selected item here
            }

            @Override
            public void onNothingSelected(AdapterView<?> parent) {

            }
        });
    }
}

4. Make AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.myapplication">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name="com.example.myapplication.spinner.SpinnerActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

5. After you run the application and click the spinner, it should display the dropdown item like the picture below.

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