Shared ViewModel in Kotlin Multiplatform

Related tags

Kotlin kotlin-multiplatform kotlin-multiplatform-mobile
Overview

multiplatform-viewmodel 🗳

Create shared ViewModel's for shared business logic using our ViewModel base class.

Features

  • Uses Jetpack ViewModel on Android for lifecycled
  • Exposes a CoroutineScope to be used in your methods

Overview of Package

This package has 1 component to it: A ViewModel class you can base your view models on.

Getting Started

Add Dependency

commonMain {
    dependencies {
        // ...
        api("com.doublesymmetry:multiplatform-viewmodel:0.0.1")
    }
}

Expose it to iOS native side

ios {
    binaries {
        framework {
            baseName = "shared"
            export(Deps.viewmodel) // required to expose the class to iOS
        }
    }
}

Using the ViewModel

class ExampleViewModel: ViewModel() {
    private val _viewState = MutableStateFlow(UIViewState())
    val viewState: StateFlow<UIViewState> = _viewState
 
    fun onLaunched() {
        scope.launch {
            // fetch some data
            _viewState.emit(newState)
        }
    }
}

Using your ViewModel on iOS with a UIViewController

When using it on iOS you'll want to make sure that you call clear() on your ViewModel on deinit to properly kill the CoroutineScope

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Releases(0.0.3)

  • 0.0.3(Apr 26, 2022)

    What's Changed

    • Add better instantiation and synchronization of scope by @dcvz in https://github.com/doublesymmetry/multiplatform-viewmodel/commit/4bb4c72c494c9f7f4447efebfcefdc348fc3c1b7

    Breaking

    • Expose CoroutineScope as viewModelScope by @dcvz in https://github.com/doublesymmetry/multiplatform-viewmodel/commit/5604b999ad9fa7f70322ff98b36836ad1e0f83df

    New Contributors

    • @dcvz made their first contribution in https://github.com/doublesymmetry/multiplatform-viewmodel/pull/1

    Full Changelog: https://github.com/doublesymmetry/multiplatform-viewmodel/compare/0.0.2...0.0.3

    Source code(tar.gz)
    Source code(zip)

  • 0.0.2(Apr 16, 2022)

  • 0.0.1(Apr 7, 2022)

Owner
Double Symmetry
Double Symmetry
GitHub
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