Android Widget: onReceive not being called for Pending Intent Broadcast

Question

Objective: Attempting to play an audio file when the Widget Button is clicked.

Problem: The button is getting added, but after pressing the button, the onReceive method doesn't get called. Is there anything that I am missing? Thanks.

Here are the required files

AndroidManifest.xml

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

<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:roundIcon="@mipmap/ic_launcher_round"
    android:supportsRtl="true"
    android:theme="@style/Theme.MyApplication">
    <receiver
        android:name=".ButtonWidget"
        android:exported="true">
        <intent-filter>
            <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
        </intent-filter>

        <meta-data
            android:name="android.appwidget.provider"
            android:resource="@xml/button_widget_info" />
    </receiver>
</application>

Layout: - button_widget.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
style="@style/Widget.MyApplication.AppWidget.Container"
android:layout_width="172dp"
android:layout_height="172dp"
android:theme="@style/Theme.MyApplication.AppWidgetContainer">

<ImageView
    android:id="@+id/activityButton"
    android:layout_width="139dp"
    android:layout_height="137dp"
    android:clickable="true"
    android:contentDescription="@string/appwidget_text"
    android:cropToPadding="false"
    android:src="@drawable/ic_cricket" />
</RelativeLayout>

Layout Provider

<?xml version="1.0" encoding="utf-8"?>
<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
android:description="@string/app_widget_description"
android:initialKeyguardLayout="@layout/button_widget"
android:initialLayout="@layout/button_widget"
android:minWidth="40dp"
android:minHeight="40dp"
android:previewImage="@drawable/icon"
android:previewLayout="@layout/button_widget"
android:resizeMode="horizontal|vertical"
android:targetCellWidth="1"
android:targetCellHeight="1"
android:updatePeriodMillis="86400000"
android:widgetCategory="home_screen" />

Widget Java:

public class ButtonWidget extends AppWidgetProvider {

static String REFRESH_ACTION = AppWidgetManager.ACTION_APPWIDGET_UPDATE;

static void updateAppWidget(Context context, AppWidgetManager appWidgetManager,
                            int appWidgetId) {

    Intent intent = new Intent(context, ButtonWidget.class);
    intent.setAction(REFRESH_ACTION);
    intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);

    PendingIntent pendingIntent = PendingIntent.getBroadcast(context, appWidgetId, intent, PendingIntent.FLAG_UPDATE_CURRENT);
    RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.button_widget);
    views.setOnClickPendingIntent(R.id.activityButton, pendingIntent);

    // Instruct the widget manager to update the widget
    appWidgetManager.updateAppWidget(appWidgetId, views);
}

@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
    // There may be multiple widgets active, so update all of them
    for (int appWidgetId : appWidgetIds) {
        updateAppWidget(context, appWidgetManager, appWidgetId);
    }
}

@Override
public void onReceive(Context context, Intent intent) {
    super.onReceive(context, intent);
    Toast.makeText(context, REFRESH_ACTION, Toast.LENGTH_SHORT).show();
    Toast.makeText(context, intent.getAction(), Toast.LENGTH_SHORT).show();
    if (REFRESH_ACTION.equals(intent.getAction())) {
        Toast.makeText(context, "onReceive True", Toast.LENGTH_SHORT).show();
        MediaPlayer media = MediaPlayer.create(context,R.raw.mediaFile);
        media.setLooping(false);
        media.start();
        media.setOnCompletionListener(MediaPlayer::release);

    } else {
        Toast.makeText(context, "onReceive False", Toast.LENGTH_SHORT).show();
    }
}

}