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Send custom class object via Bundle between fragments with Parcebale

I am using fragments inside my main activity and I want to send an object of my custom class "TaskWithUserAndProfile" to the TaskDetailsFragment

TaskWithUserAndProfile

TaskDetailsFragment

I found out that you can do it with Bundle and made it send a string, but things got complicated when I tried to send with Parcebale.
here are some parts of my code for better understanding:

Bundle

Parcebale

TaskWithUserAndProfile.kt

class TaskWithUserAndProfile() : Parcelable
override fun writeToParcel(p0: Parcel?, p1: Int)
TODO("not implemented") //To change body of created functions use File

var profile = Profile()
var task = Task()
var user = User()

constructor(parcel: Parcel) : this()
//profile = parcel.read


override fun describeContents(): Int
return 0


companion object CREATOR : Parcelable.Creator<TaskWithUserAndProfile>
override fun createFromParcel(parcel: Parcel): TaskWithUserAndProfile
return TaskWithUserAndProfile(parcel)


override fun newArray(size: Int): Array<TaskWithUserAndProfile?>
return arrayOfNulls(size)





HomeFragment.kt

//Inside onCreateView
adapter = TasksAdapter(tasksArray) item ->
println(item.profile)
val bundle = Bundle()
bundle.putParcelable("MyItem", item)
val taskDetailsFragment = TaskDetailsFragment()
taskDetailsFragment.arguments = bundle
val fragmentTransaction = fragmentManager.beginTransaction()
fragmentTransaction.replace(R.id.container, taskDetailsFragment)
fragmentTransaction.addToBackStack(null)
fragmentTransaction.commit()



How should my class that implements the Parcebale look like and how can I then send and receive the item object in fragments?

writeToParcel

3 Answers
3

You don't need to use Parcelable even, just simply define an TaskWithUserAndProfile variable in your TaskDetailsFragment and set in in HomeFragment.

Parcelable

TaskWithUserAndProfile

TaskDetailsFragment

HomeFragment

TaskDetailsFragment.kt

class TaskDetailsFragment : Fragment()

var selectedTask: TaskWithUserAndProfile? = null

override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?): View?




HomeFragment.kt

//Inside onCreateView
adapter = TasksAdapter(tasksArray) item ->
val taskDetailsFragment = TaskDetailsFragment()
taskDetailsFragment.selectedTask = item
val fragmentTransaction =
fragmentManager?.beginTransaction()

fragmentTransaction?.replace(R.id.container, taskDetailsFragment)

fragmentTransaction?.addToBackStack(null)
fragmentTransaction?.commit()



if you wanna keep using parcelize, just try this sample:

@Parcelize
data class TaskWithUserAndProfile(var profile:Profile, var task :Task, var user:User) : Parcelable


I could miss something from your class but the idea should looks like this, so use annotation @Parcelize and Parcelable implementation (do not need to override any method).

Update
Thanks for reminder. You will have to add this to your gradle file:

Update

androidExtensions
experimental = true



Use this plugin:

android-parcelable-intellij-plugin-kotlin

for TaskWithUserAndProfile, Profile, Task, User models.

TaskWithUserAndProfile, Profile, Task, User

settings/plugins/browse repositories...

Code/Generate/Parcelable(kotlin)

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