# Extension functions in Kotlin: Extend the Android Framework (KAD 08)

DevFeed: [Extension functions in Kotlin: Extend the Android Framework (KAD 08)](<https://devfeed.tech/articles/extension-functions-in-kotlin-extend-the-android-framework-kad-08-27162.md>)

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

Published: 2017-01-11T00:00:00Z

Content type: tutorial

Language: en

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

Topics: [Kotlin](<https://devfeed.tech/topics/kotlin.md>), [Extension](<https://devfeed.tech/topics/extension.md>), [Android](<https://devfeed.tech/topics/android.md>), [Code](<https://devfeed.tech/topics/code.md>), [Framework](<https://devfeed.tech/topics/framework.md>), [Library](<https://devfeed.tech/topics/library.md>)

Tags: [android](<https://devfeed.tech/tags/android.md>), [android-framework](<https://devfeed.tech/tags/android-framework.md>), [code](<https://devfeed.tech/tags/code.md>), [examples](<https://devfeed.tech/tags/examples.md>), [extension](<https://devfeed.tech/tags/extension.md>), [extension-function](<https://devfeed.tech/tags/extension-function.md>), [framework](<https://devfeed.tech/tags/framework.md>), [how-to](<https://devfeed.tech/tags/how-to.md>), [kotlin](<https://devfeed.tech/tags/kotlin.md>), [library](<https://devfeed.tech/tags/library.md>), [picasso](<https://devfeed.tech/tags/picasso.md>)

## AI overview

A tutorial explaining Kotlin extension functions and extension properties, with Android examples for views, Toasts, adapter view inflation, and Picasso image loading. It describes how extensions add functionality to existing classes without modifying their code and notes that extension properties cannot store state.

## Source excerpt

Everything Android, Kotlin and other random topics