# Your First Kotlin Android App - Part 19: Introduction | Ray Wenderlich

**URL:** <https://forums.kodeco.com/t/your-first-kotlin-android-app-part-19-introduction-ray-wenderlich/40518>\
**Category:** 🎓 Courses & Articles\
**Created:** [March 20, 2018, 4:39pm UTC](https://forums.kodeco.com/t/your-first-kotlin-android-app-part-19-introduction-ray-wenderlich/40518 "2018-03-20T16:39:04Z")\
**Posts on this page:** 1\
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**Author:** ![bdmoakley](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/bdmoakley/32/108772_2.png) [@bdmoakley](https://forums.kodeco.com/u/bdmoakley)\
**Post date:** [March 20, 2018, 4:39pm UTC](https://forums.kodeco.com/t/your-first-kotlin-android-app-part-19-introduction-ray-wenderlich/40518/1 "2018-03-20T16:39:04Z")

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This video introduces a critical component in Android development: Activities.

* * *
 This is a companion discussion topic for the original entry at [https://www.raywenderlich.com/4738-your-first-kotlin-android-app/lessons/19](https://www.raywenderlich.com/4738-your-first-kotlin-android-app/lessons/19)