# Kotlin for Android (III): Extension functions and default values

DevFeed: [Kotlin for Android (III): Extension functions and default values](<https://devfeed.tech/articles/kotlin-for-android-iii-extension-functions-and-default-values-27178.md>)

Original publisher: [Read original article](<https://antonioleiva.com/kotlin-android-extension-functions>)

Published: 2015-04-06T00:00:00Z

Content type: tutorial

Language: en

Sources: [Antonio Leiva](<https://devfeed.tech/sources/antonio-leiva.md>)

Topics: [Kotlin](<https://devfeed.tech/topics/kotlin.md>), [Android](<https://devfeed.tech/topics/android.md>)

Tags: [android](<https://devfeed.tech/tags/android.md>), [compilation](<https://devfeed.tech/tags/compilation.md>), [extension-function](<https://devfeed.tech/tags/extension-function.md>), [how-to](<https://devfeed.tech/tags/how-to.md>), [kotlin](<https://devfeed.tech/tags/kotlin.md>), [parameter](<https://devfeed.tech/tags/parameter.md>)

## AI overview

A tutorial on Kotlin for Android that explains extension functions, including their use with activities, and discusses reified types, inline functions, optional parameters, and default values.

## Source excerpt

Everything Android, Kotlin and other random topics