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Stop Using ArrayList in Kotlin Data Classes | Kotlin | Android #kotlin

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Feb 25, 2026
13:34

Ever wonder why you should use List instead of ArrayList in your Kotlin apps, especially with Retrofit or Serialization? Welcome back to Unsung Coders! In this quick video, we break down the simple but crucial difference between the two, and why mixing them up might be crashing your app. TimeStamps : 00:00 - Agenda 00:59 - High Level Definitions 03:25 - The Venn Diagram 04:56 - Low level : Interface vs Class? 05:33 - In Short 06:31 - Are they same? 07:45 - The different approaches 12:33 - Conclusion Github : https://github.com/Rohit-554/Nivi_Full_Stack_KMM That's all hope, you have understood a new concept , make sure to hit the subscribe button for crazy contents. Thank you, #Kotlin #AndroidDev #UnsungCoders #KotlinCollections #AndroidDevelopment SEOs: kotlin list vs arraylist, kotlin collections, mutablelist vs list kotlin, kotlin arraylist, kotlin list tutorial, android development, kotlin interview questions, kotlinx serialization list, retrofit arraylist crash, kotlin data class list, unsung coders, kotlin beginners, android studio tutorial, kotlin collections explained kotlinx.serialization.json.internal.JsonDecodingException: Expected start of the object '{', but had '[' instead "Why is my Kotlinx Serialization crashing with ArrayList?" "Difference between List and MutableList in Kotlin" "How to use Retrofit with JSON arrays in Kotlin" "Kotlin collection interview questions" "Should I use List or ArrayList in a Kotlin data class?"

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Stop Using ArrayList in Kotlin Data Classes | Kotlin | Android #kotlin | NatokHD