[AndroidX] Introducing koin-androidx-fragment with Koin fragmentFactory

[arnaudgiuliani]

Hi All,

the 2.1.0-alpha-3 contains a new package: koin-androidx-fragment

This will allow to inject your Fragment with Koin 👍

How to use that?

1. setup your KoinFragmentFactory at start with fragmentFactory():

 startKoin {
    androidLogger(Level.DEBUG)
    androidContext(this@MainApplication)

    // setup a KoinFragmentFactory instance
    fragmentFactory()

    modules(...)
}

2. Use constructor for you Fragment class:

class MyFragment(val myService: MyService) : Fragment()

3. Declare it in Koin (factory or scoped instance):

val appModule = module {
    
    factory { MyFragment(get()) }
}

4. Setup the factory from your activity & just use it:

Setup the Koin factory from your activity:

class MyActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        // Koin Fragment Factory
        setupKoinFragmentFactory()

        super.onCreate(savedInstanceState)
        //...
    }
}

Get your Fragment:

supportFragmentManager.beginTransaction()
            .replace(R.id.mvvm_frame, MyFragment::class.java, null, null)
            .commit()

For more details (like using it with scope): https://doc.insert-koin.io/#/koin-android/fragment-factory

The package should be available soon 🎉

[mqueiroz1995]

Amazing work!

For some reason, the package contains org.koin.androidx.viewmodel.BuildConfig.

This results in the following error when adding both koin-androidx-fragment and koin-androidx-viewmodel as dependencies:

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:checkDebugDuplicateClasses'.
> 1 exception was raised by workers:
  java.lang.RuntimeException: Duplicate class org.koin.androidx.viewmodel.BuildConfig found in modules classes.jar (org.koin:koin-androidx-fragment:2.1.0-alpha-3) and classes.jar (org.koin:koin-androidx-viewmodel:2.1.0-alpha-3)

Am I doing anything wrong?

[arnaudgiuliani]

nothing, manifest is buggy in alpha-3. Check alpha-4 soon this week for a fix 👍

[anuragdalia]

alpha-6 is here and the duplicate class issue seems to persist?
Is there something I should be doing ?

[arnaudgiuliani]

Yep sorry. The commit has been screwed :/
I will repush with right manifest fix 👍

Check alpha-7

[anuragdalia]

Can you elaborate on this
setupKoinFragmentFactory() this doesnt exist?!

Setup the Koin factory from your activity:

class MyActivity : AppCompatActivity() {

override fun onCreate(savedInstanceState: Bundle?) {
    // Koin Fragment Factory
    setupKoinFragmentFactory()

    super.onCreate(savedInstanceState)
    //...
}

}

[arnaudgiuliani]

setupKoinFragmentFactory() this is an extension function. Be sure to have your cache clear if you had previous glitched version.