A Spinner in Android is a UI element used to display the list of items in a drop-down menu. The spinner is depicted as a downward arrow on the layout. Each of these items is selectable and can be used as user input. In this article, we will show you how to change the Spinner item text styles in Android.
More about Spinner in Android can be found at Spinner in Android with an Example. Follow the below steps once the IDE is ready.
Step-by-Step Implementation
Step 1: Create a New Project in Android Studio
To create a new project in Android Studio please refer to How to Create/Start a New Project in Android Studio. The code for that has been given in both Java and Kotlin Programming Language for Android.
Step 2: Working with the XML files
Navigate to the app > res > layout > activity_main.xml and add the below code to that file. Below is the code for the activity_main.xml file. Add a Spinner as shown below.
XML
<?xml version="1.0" encoding="utf-8"?>    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context=".MainActivity">      <Spinner        android:id="@+id/spinner_1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_centerInParent="true"/></RelativeLayout> |
Step 3: Create a layout for the spinner (spinner_list.xml)
Navigate to the app > res > layout > and create a layout file. Name it spinner_list.xml and add a TextView with text attributes as shown below.
XML
<TextView     android:layout_width="match_parent"    android:layout_height="wrap_content"    android:padding="10dp"    android:textColor="@android:color/holo_red_light"    android:textSize="16sp"    android:textStyle="bold|italic"/> |
Step 4: Working with the MainActivity file
Go to the MainActivity file and refer to the following code. Below is the code for the MainActivity file. Comments are added inside the code to understand the code in more detail.
Kotlin
import androidx.appcompat.app.AppCompatActivityimport android.os.Bundleimport android.widget.ArrayAdapterimport android.widget.Spinner  class MainActivity : AppCompatActivity() {    override fun onCreate(savedInstanceState: Bundle?) {        super.onCreate(savedInstanceState)        setContentView(R.layout.activity_main)          // Declaring and initializing the Spinner from the layout file        val mSpinner = findViewById<Spinner>(R.id.spinner_1)          // Create a list to display in the Spinner        val mList = arrayOf<String?>("Delhi", "Mumbai", "Chennai", "Kolkata", "Bengaluru")          // Create an adapter as shown below        val mArrayAdapter = ArrayAdapter<Any?>(this, R.layout.spinner_list, mList)        mArrayAdapter.setDropDownViewResource(R.layout.spinner_list)          // Set the adapter to the Spinner        mSpinner.adapter = mArrayAdapter      }} |
Java
import androidx.appcompat.app.AppCompatActivity;import android.os.Bundle;import android.widget.ArrayAdapter;import android.widget.Spinner;import java.util.Arrays;import java.util.List;  public class MainActivity extends AppCompatActivity {      @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);          // Declaring and initializing the Spinner from the layout file        Spinner mSpinner = findViewById(R.id.spinner_1);          // Create a list to display in the Spinner        List<String> mList = Arrays.asList("Delhi", "Mumbai", "Chennai", "Kolkata", "Bengaluru");          // Create an adapter as shown below        ArrayAdapter<String> mArrayAdapter = new ArrayAdapter<String>(this, R.layout.spinner_list, mList);        mArrayAdapter.setDropDownViewResource(R.layout.spinner_list);          // Set the adapter to the Spinner        mSpinner.adapter = mArrayAdapter;    }} |
Output:
