How to Add Spinner in Android Example

What is spinner and and how you can add a spinner in Android app using android studio. Lets take a look at the android spinner example and discuess its attributes to have deeper understanding.

What is Spinner?

A spinner is a drop-down menu in Android that allows the user to select one value from a list. It is often used in the place of a traditional drop-down menu or a multi-select component.

To use a spinner in your Android app, you will need to use the Spinner view and set an adapter to supply the data for the spinner. You can then use an OnItemSelectedListener to listen for when the user selects an item from the spinner.

How to Add Spinner in Android?

Here is an example of how to create and use a spinner in an Android app using Kotlin:

  • In your layout XML file, add a Spinner view and specify the layout for the drop-down items:
  • In your res/values directory, create an arrays.xml file and define an array of items to display in the spinner:

<resources>

<string-array name=”items”>

<item>Item 1</item>

<item>Item 2</item>

<item>Item 3</item>

</string-array>

</resources>

  • In your Activity or Fragment, find the Spinner view and set an adapter to supply the data for the spinner:
  • To listen for when the user selects an item from the spinner, set an OnItemSelectedListener on the spinner:

spinner.onItemSelectedListener = object : AdapterView.OnItemSelectedListener {

override fun onItemSelected(parent: AdapterView<*>, view: View, position: Int, id: Long) {

// Do something when an item is selected

}

override fun onNothingSelected(parent: AdapterView<*>) {

// Do something when nothing is selected

}

Android Spinner Attributes:

Here are some of the most commonly used attributes for the Spinner view in Android:

  • android:entries: A reference to an array resource that will be used as the data source for the spinner.
  • android:prompt: A reference to a string resource to use as the prompt for the spinner.
  • android:spinnerMode: The mode of the spinner. Can be either dialog or dropdown.
  • android:dropDownSelector: A drawable to use as the background for the drop-down list.
  • android:dropDownWidth: The width of the drop-down list. Can be either match_parentwrap_content, or an explicit dimension value.
  • android:dropDownHeight: The height of the drop-down list. Can be either wrap_content, or an explicit dimension value.

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