Todo app with multiple checkboxes using Type Converter with Gson in jetpack compose

[@MohsenMashkour]

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[@Lapakias]

Hello and thank you for your classes from Greece. Can you please show how we can upload and monitor an app in play store?

[@ubersticks]

Can you comment on why GSON is useful for this? The basic Kotlin functions are simple too. Another option might be Kotlin serialization. What is the power of Gson?
// converters using normai Kotlin
@TypeConverter
fun fromBooleanList(list: List): String {
return list.joinToString(",") { it.toString() }
}
@TypeConverter
fun toBooleanList(value: String): List {
return value.split(",").map { it.toBoolean() }
}

[@MohsenMashkour]

Great question! You’re right-Kotlin’s basic functions can handle simple conversions like the one you’ve shared. However, Gson becomes useful when you’re dealing with more complex data structures, such as nested objects or lists of custom objects. It can easily convert these types to and from JSON without you having to manually handle each field.
For example, if your data model evolves and you start working with lists of more complex objects (not just booleans), Gson will handle serialization and deserialization automatically with minimal changes to your code. It also has great support for complex features like custom type adapters, making it more flexible in the long run.
As for Kotlin Serialization, it’s indeed a solid alternative and has the benefit of being Kotlin-first with better performance in some cases. But Gson has been around longer, is widely supported, and works out of the box with many existing libraries, which might make it more convenient depending on your project.
If your app stays simple, your Kotlin converter works perfectly fine. But Gson is often chosen for scalability and flexibility.