Kotlin - android.os.BadParcelableException: ClassNotFoundException when unmarshalling:

Question

I'm using org.jetbrains.kotlin.android.extensions to parcel data.

This is my data class

@Parcelize
data class MusicTrack(
    val id: Long,
    val title: String,
    val albumId: String,
    val artist: String,
    val duration: String,
    val trackArt: String = "",
    val fileUri: Uri) : Parcelable

This is how I send my data across

  override fun playTrack(position: Int, musicList: ArrayList<MusicTrack>) {
    info { musicList }
    val bundle = bundleOf(
            Config.MusicConfig.MUSIC_TRACKS to musicList,
            Config.MusicConfig.MUSIC_TRACK_POSITION to position)


    MediaControllerCompat.getMediaController(this).transportControls.playFromUri(Uri.parse("Hack"), bundle)
}

Then consuming the parcel like

  override fun onPlayFromUri(uri: Uri?, extras: Bundle?) {
        super.onPlayFromUri(uri, extras)

        val tracks = extras?.getParcelable<MusicTrack>(Config.MusicConfig.MUSIC_TRACKS) as ArrayList<*>

        info { tracks }

    }

Which throws the above error android.os.BadParcelableException: ClassNotFoundException when unmarshalling:

But, when I try to consume it in an activity with

    val songsList = intent.getStringArrayListExtra("Extras")
    info { songsList }

It works! Can anyone help me here?

score 1 · Answer 1 · answered Apr 14 '18 at 11:28

1

You're trying to read a single MusicTrack, but you have a list of them in a Bundle. You need to call getParcelableArrayList<MusicTrack>.

answered Apr 14 '18 at 11:28

Miha_x64

5,973
1
41
63

android.os.BadParcelableException: ClassNotFoundException when unmarshalling: com.wizmusicplayer.MusicTrack – Veeresh Charantimath Apr 16 '18 at 09:44
extras?.getParcelableArrayList(Config.MusicConfig.MUSIC_TRACKS) – Veeresh Charantimath Apr 16 '18 at 09:44
1

Looks like you're passing a Bundle to another process. Ensure this process has access to `MusicTrack` class and you're passing your classLoader while reading from Parcel. – Miha_x64 Apr 16 '18 at 14:06
1

Yes got it, had to set the classLoader – Veeresh Charantimath Apr 17 '18 at 08:12
1

extras?.classLoader = this@MusicService.classLoader before accessing the paracelable – Veeresh Charantimath Apr 17 '18 at 08:12
https://stackoverflow.com/questions/13997550/unmarshalling-errors-in-android-app-with-custom-parcelable-classes/14093745#14093745 – Veeresh Charantimath Apr 17 '18 at 08:42

score -1 · Answer 2 · answered Apr 14 '18 at 07:44

-1

Try this in Buid.gradle this solved my issue

apply plugin: 'org.jetbrains.kotlin.android.extensions'
androidExtensions {
    experimental = true
}

answered Apr 14 '18 at 07:44

Siddharth Patel

205
1
13

I've added that to my gradle file – Veeresh Charantimath Apr 14 '18 at 07:52

Kotlin - android.os.BadParcelableException: ClassNotFoundException when unmarshalling:

2 Answers2