Spinner | Android Studio | Java

Spinner Example | Android Studio | Java

In this tutorial, we will learn how to use Spinner.

Android spinner is like the drop-down menu with multiple values from which the end-user can select only one value. Android spinner is associated with AdapterView. So you need to use one of the adapter classes with spinner.

We will select an item from the Spinner and set it to the TextView.

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Step 1: Create a new project OR Open your project

Step 2: Code

activity_main.xml

<?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"
    android:padding="5dp"
    tools:context=".MainActivity">
    <Spinner
        android:id="@+id/spinner"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
    </Spinner>

    <TextView
        android:id="@+id/outputSpinnerTv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Hello World!"
        android:textSize="30sp"
        android:textColor="#000"
        android:layout_centerVertical="true"
        android:layout_centerHorizontal="true"/>

</RelativeLayout>

MainActivity.java

package com.blogspot.atifsoftwares.spinnerexample;

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.TextView;

public class MainActivity extends AppCompatActivity {

    Spinner mSpinner;
    TextView mOutputSpinnerTv;
    //options to be displayed in spinner
    String[] mOptions = {"Canada", "Pakistan", "Turkey", "US"};

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mSpinner = findViewById(R.id.spinner);
        mOutputSpinnerTv = findViewById(R.id.outputSpinnerTv);

        //Creating the ArrayAdapter instance having the list of options
        ArrayAdapter aa = new ArrayAdapter(this, android.R.layout.simple_spinner_item, mOptions);
        aa.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        //setting the ArrayAdapter data on the Spinner
        mSpinner.setAdapter(aa);

        //spinner item click handler
        mSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
                //METHOD 1: Get text from selected item's position & set it to TextView
                //mOutputSpinnerTv.setText(parent.getItemAtPosition(position).toString());

                //METHOD 2: Get the position of item selected, & perform specific task
                if (position==0){
                    mOutputSpinnerTv.setText("Canada is selected...");
                }
                if (position==1){
                    mOutputSpinnerTv.setText("Pakistan is selected...");
                }
                if (position==2){
                    mOutputSpinnerTv.setText("Turkey is selected...");
                }
                if (position==3){
                    mOutputSpinnerTv.setText("US is selected...");
                }

            }

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

            }
        });


    }
}

Step 3: Run Project

Output