Pass a mutableList from activity A to activity B in Kotlin.

Question

I'm trying to pass data from activity A to activity B through intent in Kotlin.

The problem is I have a videos: MutableList<Video> and the intent.putParcelableArrayListExtra("VIDEOS", videos) only accepts ArrayList<out Parcelable> as arguments.

Questions

*. How do I send a mutableList data from activity A to activity B?

*. Or Do I have to convert it to ArrayList<Video> ?

PS: Videoimplements Parcelable

score 15 · Accepted Answer · answered Jan 31 '18 at 11:56

15

Converting it to an ArrayList (or storing it as one in the first place?) is the easy solution if you want to stick to passing it through an Intent. There's an ArrayList constructor that takes a collection as its parameter:

intent.putParcelableArrayListExtra("VIDEOS", ArrayList(videos))

answered Jan 31 '18 at 11:56

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how should behave the second activity when this array get?. because seems when we use "getParcelableArrayListExtra" , it makes error – charitha amarasinghe Aug 10 '20 at 17:42

score 2 · Answer 2 · answered Mar 23 '21 at 05:35

For those asking how the Parcelable class is created, this is the solution I came up with in Kotlin

The Parcelable Class:

@Parcelize
data class ExampleModel(
        var stringOne: String,
        var stringTwo: String): Parcelable

Then in Activity A you can create an ArrayList and send it via intent to Activity B

private var exampleMutableList: MutableList<ExampleModel> = arrayListOf()
exampleMutableList.add(ExampleModel("hello", "world"))
intent.putExtra("example", ArrayList(exampleMutableList))

And in Activity B we can receive our ArrayList:

exampleMutableList = intent.getParcelableArrayListExtra<ExampleModel>("example") as ArrayList<ExampleModel>

All the best!

This is a pretty complete answer. should be accepted one. – Siddhesh Shirodkar Apr 19 '21 at 19:52 — Siddhesh Shirodkar, Apr 19 '21 at 19:52

Pass a mutableList from activity A to activity B in Kotlin.

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