Using Koject on Android

Integrating Koject into your Android application is easy.

Getting Started

To get started, add the following dependencies for Android:

dependencies {
    implementation("com.moriatsushi.koject:koject-android-core:1.3.0")
}

Also, make sure to check the Setup document.

Call Koject.start() in the Application class, and be sure to call application().

class MyApplication : Application() {
    override fun onCreate() {
        super.onCreate()

        Koject.start {
            application(this@MyApplication)
        }
    }
}

To provide the necessary dependencies, use the @Provides annotation. You can inject the Application and the application's Context.

@Provides
@Singleton
fun provideAppDatabase(
    applicationContext: Context
): AppDatabase {
    return Room.databaseBuilder(
        applicationContext,
        AppDatabase::class.java,
        "database-name"
    ).build()
}

@Provides
class MyController(
    val db: AppDatabase
) {
    /* ... */
}

To inject into an Activity, etc., use the inject() or lazyInject() method.

class MyActivity: Activity {
    val controller: MyController by lazyInject()

    /* ... */
}