This android kotlin tutorial code is written in an android studio IDE. This interface gives us selected item details on the Spinner selection change event. So we can get Spinner selected item details when users select an item from the Spinner widget or they change their selection. The AdapterView.OnItemSelectedListener interface callback invokes when an item in the Spinner widget has been selected. So the Spinner displays the items which came from the String array.

Finally, we bind the ArrayAdapter with the Spinner widget. Next, We define the ArrayAdapter drop-down view resource. Then we build an instance of the ArrayAdapter using this String array. In this kotlin tutorial, we create an array of String values.

ArrayAdapter can be used with a list-based user interface such as a ListView or Spinner. It returns a view for each object in a collection of data objects. The ArrayAdapter provides views for an AdapterView. Developers can populate a Spinner widget with items using an ArrayAdapter. This tutorial code is written in Kotlin programming language.Īndroid developers can add a Spinner widget to the XML layout file using the Spinner tag. The following android application development tutorial will demonstrate how we can create and use a Spinner widget in an android app. Android app users can expand the Spinner to see all available items and can select one among them. Only the selected item is visible and all other items are invisible. The Spinner widget display one child at a time, which means the Spinner list widget display one list item at a time. MultiSelectionSpinner.java public class MultiSelectionSpinner extends 7.widget.AppCompatSpinner implementsĭialogInterface.The Spinner is a list widget of native android SDK. As for the list item layout, we use Android's simple_spinner_item.xml. Item.java package īelow is the initial code of our MultiSelectionSpinner class which consists of the variables I've mentioned before and the constructors. To make it easy, I use Lombok annotations. First, we create the Item class which has two variables, name and value.

Android studio spinner sample