Android Spinner

Create a simple example of using a Spinnerin Android. In this example, we'll create an Android app with a Spinner, and the user can set the select data using the Spinner. We'll also display a toast message with the selected Spinner.

Here is the tutorial for Kotlin

There Are Some Common Attributes for Spinner:

Step 1:

File open res/layout/activity_main.xml file −

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="center"
        android:orientation="vertical">
        <Spinner
            android:id="@+id/spinner"
            android:layout_width="200dp"
            android:layout_height="wrap_content" />
    </LinearLayout>


</RelativeLayout>

Step 2:

File open com.microappvalley.newtestproject/MainActivity.java file −

Java:

package com.microappvalley.newtestproject;

import androidx.appcompat.app.AppCompatActivity;
import android.annotation.SuppressLint;
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 java.util.ArrayList;

public class MainActivity extends AppCompatActivity {



    ArrayList<String> spinnerArray;
    Spinner spinner;
    @SuppressLint("MissingInflatedId")
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        spinner=findViewById(R.id.spinner);
        spinnerArray=new ArrayList<>();
        spinnerArray.add("Java");
        spinnerArray.add("Kotlin");
        spinnerArray.add("JetPack");
        spinnerArray.add("Flutter");

        ArrayAdapter<String> spinnerAdapter= new ArrayAdapter<String>(this, android.R.layout.simple_expandable_list_item_1, spinnerArray);

        spinner.setAdapter(spinnerAdapter);

        spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) {
                Toast.makeText(MainActivity.this, spinnerArray.get(position), Toast.LENGTH_SHORT).show();
            }

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

        });


    }
}

Open Device Manager, run the emulator, and  then run the application. Next, check the working output and check the output  you declared in your code.