CODEWITHSUNDEEP
androiddependency-injectionkoin
Wafi_ck
Wafi_ck

Reputation: 1378

How to inject data class using Koin?

When my application starts I create object with some data and I want to share the same instance of object between services/viewModels.

Is it possible to inject the same instance of data class to viewModel using Koin?

Edit: I create user object in MainViewModel when app loaded data from firebase at start.

@IgnoreExtraProperties
@Keep
data class User(
    val id: String = "",
    val name: String? = null,
    val surname: String? = null,
    val email: String? = null,
    val avatarUrl: String? = null
)

Upvotes: 0

Views: 2275

Answers (2)

ocos
ocos

Reputation: 2244

If your view model inherits from KoinComponent, you can access getKoin method to declare your user object.

class MainViewModel : ViewModel(), KoinComponent {

The user object will be available to rest of your application after declaration.

// user created from data from firebase ...

fun insertKoinFor(user: User) {
    // declare koin the user of type User
    getKoin().declare<User>(user)

    // or declare with a named qualifier
    getKoin().declare(user, named("myUser"))
}

Hope, it helps.

Upvotes: 1

laalto
laalto

Reputation: 152787

I would create a holder object, say UserManager, to hold an optional User instance. This holder is something you can provide in your koin graph as single, and whatever component responsible setting up the User instance (for example your MainViewModel) can update the instance inside the singleton holder.

Upvotes: 1

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