Injector

class Injector

The Injector provides a was to inject dependencies into properties via Kotlins property delegates.

E.g.

class MyClass {
  private val injector = Injector()
  private val eagerService: Service1 by injector.instance()
  private val lazyService: Service2 by injector.lazyInstance()
  private val fromFactory: Widget by injector.instance(Color.BLUE)

  fun onCreate() {
    injector.inject(Application.graph)
  }

}

Types

InjectedProperty

abstract class InjectedProperty<out T> : ReadOnlyProperty<Any?, T>

Constructors

<init>

Injector()

The Injector provides a was to inject dependencies into properties via Kotlins property delegates.

Properties

injected

val injected: Boolean

Functions

factory	`fun <A, R : Any> factory(qualifier: Any? = null, generics: Boolean = false): Injector.InjectedProperty<Factory<A, R>>` Creates and registers a property delegate for a factory of type (A) -> R.
factoryOrNull	`fun <A, R : Any> factoryOrNull(qualifier: Any? = null, generics: Boolean = false): Injector.InjectedProperty<Factory<A, R>?>` Creates and registers a property delegate for an optional factory of type (A) -> R.
inject	`fun inject(graph: Graph): Unit` Connects the given graph with all previously created property delegates to resolve the dependencies.
instance	`fun <R : Any> instance(qualifier: Any? = null, generics: Boolean = false): Injector.InjectedProperty<R>` Creates and registers a property delegate for an instance of type `R`. `fun <A, R : Any> instance(argument: A, qualifier: Any? = null, generics: Boolean = false): Injector.InjectedProperty<R>` Creates and registers a property delegate for an instance of type `R`. This lookups a factory of type `(A) -> R` and calls it with the supplied argument.
instanceOrNull	`fun <R : Any> instanceOrNull(qualifier: Any? = null, generics: Boolean = false): Injector.InjectedProperty<R?>` Creates and registers a property delegate for an optional instance of type `R`. `fun <A, R : Any> instanceOrNull(argument: A, qualifier: Any? = null, generics: Boolean = false): Injector.InjectedProperty<R?>` Creates and registers a property delegate for an optional instance of type `R`. This lookups a factory of type `(A) -> R` and calls it with the supplied argument or returns null if no factory of type `(A) -> R` exists.
instancesOfType	`fun <R : Any> instancesOfType(generics: Boolean = false): Injector.InjectedProperty<Set<R>>` Creates and registers a property delegate for a Set of instances of type `R`.
lazyInstance	`fun <R : Any> lazyInstance(qualifier: Any? = null, generics: Boolean = false): Injector.InjectedProperty<R>` `fun <A, R : Any> lazyInstance(argument: A, qualifier: Any? = null, generics: Boolean = false): Injector.InjectedProperty<R>` Creates and registers a lazy property delegate for an instance of type `R`.
lazyInstanceOrNull	`fun <R : Any> lazyInstanceOrNull(qualifier: Any? = null, generics: Boolean = false): Injector.InjectedProperty<R?>` `fun <A, R : Any> lazyInstanceOrNull(argument: A, qualifier: Any? = null, generics: Boolean = false): Injector.InjectedProperty<R?>` Creates and registers a lazy property delegate for an optional instance of type `R`.
lazyInstancesOfType	`fun <R : Any> lazyInstancesOfType(generics: Boolean = false): Injector.InjectedProperty<Set<R>>` Creates and registers a lazy property delegate for a Set of instances of type `R`.
provider	`fun <R : Any> provider(qualifier: Any? = null, generics: Boolean = false): Injector.InjectedProperty<Provider<R>>` Creates and registers a property delegate for a Provider of type `() -> R`. `fun <A, R : Any> provider(argument: A, qualifier: Any? = null, generics: Boolean = false): Injector.InjectedProperty<Provider<R>>` Creates and registers a property delegate for a Provider of type `() -> R`. This lookups a factory of type `(A) -> R` and calls it with the supplied argument when the provider gets invoked.
providerOrNull	`fun <R : Any> providerOrNull(qualifier: Any? = null, generics: Boolean = false): Injector.InjectedProperty<Provider<R>?>` Creates and registers a property delegate for an optional Provider of type `R`. `fun <A, R : Any> providerOrNull(argument: A, qualifier: Any? = null, generics: Boolean = false): Injector.InjectedProperty<Provider<R>?>` Creates and registers a property delegate for a Provider of type `() -> R`. This lookups a factory of type `(A) -> R` and calls it with the supplied argument when the provider gets invoked. The delegate will return null when no factory of type `(A) -> R` exists.
providersOfType	`fun <R : Any> providersOfType(generics: Boolean = false): Injector.InjectedProperty<Set<Provider<R>>>` Creates and registers a property delegate for a Set of providers of type `R`.