Dagger 2 Android Tutorial 01 - Setting up
Why Stack Overflow recommends it
Stack Overflow users link it when answering Dagger 2 questions from people who are new to the library and need a step-by-step introduction.
Recommended by 4 people across 4 different months, 2017 to 2019.
What it is
The first episode of a Dagger 2 for Android tutorial series by TwistedEquations. It walks through setting up the library in an Android project, with the aim of producing cleaner, easier to understand code. It assumes you already know basic dependency injection in Java.
What people said
Recommends Jileshl · 2017-07 · Stack Overflow · on “dagger2 constructor injection how to provide dependency without module”
Three ways to solve this problem 1) Give a module which does the provide of the Relam Model @Provides @Singleton public Model providesRealmModel() { return new Model(); } 2) Make your RelamModel class also constructor injected class Model { @Inject public Model() {} } The Trick in construction injection is all its dependencies should also be constuctor injeceted then it would work fine. (From experience your model would need application context. look at the 3 option for ways to implement external Dependencies 3) Provide Model as external dependency. @Module public class ModelModule { private Model relamModel; public ModelModule(Model relamModel) { this.relamModel = relamModel } } @Component(
Recommends Lukasz · 2018-01 · Stack Overflow · on “IllegalArgumentException: expected one element but was: <@com.borisruzanov.social.dependency.scopes.AuthScope, @javax.inject.Singleton>”
I second everything @Tuby said. It seems that you are in need of a short introduction to Dagger. This [this video] youtube series is a good start.
Recommends Khalid Ali · 2018-04 · Stack Overflow · on “Android Dagger2: How to use dependency injection in non Activity/Fragment class”
You can only use AndroidInjection with (Activity, Fragment, Service, ContentProvider and BroadcastReceiver) as the documentation [LINK] says. If you want to use dependency inject in a java class which is neither an activity nor any of the above classes, so you have to create an interface like for example @Singleton @Component(modules = AppModule.class) public interface AppComponent { AuthComponent plusAuthComponent(); void inject(AnyClassType any); void inject(AnotherType another); void inject(Again again); } And I think this [LINK] will help you. Another amazing tutorial on Youtube Click here [this video]
Recommends a_local_nobody · 2019-07 · Stack Overflow · on “Dependency Injection in multiple Activities with Dagger and Room”
i realize this doesn't answer your question, but have a look at this set of tutorials, it might be really useful for you to learn dagger for android, you'll get the basics of it after the first 3 or 4, i hope this somewhat helps you [this video]
Cites jhen · 2019-07 · Stack Overflow · on “Dependency Injection in multiple Activities with Dagger and Room”
I am fairly new to Android coming from a c# background and was came across dependency injection with dagger. I managed to create a simple example but was wondering how i can use my repository (i tried to use the repository pattern here) in another activity. So my structure is following: [LINK] When i try to create a workout in my MainActivity class it works just fine. So i added following line to my AddWorkoutActivity class @Inject public WorkoutRepository workoutRepository; But when i try to save the workout I always get a null reference error on the workoutRepository so i do miss something in my understanding how the DI works here. Maybe someone can give me a hint what i have to do so my r