How to resolve a circular dependency while still using Dagger2?

Question

I have two classes, Foo and Bar, which depend on each other, as well as various other classes. I am using Dagger-2 for dependency injection, b

Answer 1

This is how I resolved it, without parent classes.

Class 1: Engine. (in component interface)

@Provides
public Engine myEngine(Context context) {
    return new Engine (context);
}

Class 2: Parts. Engine also needs Parts instance but the creation is delayed.

@Inject
public Parts(Context context, Engine engine) {
    this.context = context;
    this.engine= engine;
    engine.setParts(this);
}

Circular dependency can be achieved but one class must be initiated first before the other.

Again, if possible, refactor code to avoid circular DI.