How do you use dagger 2 injection with Moxy

[maruf89]

Trying to use the @InjectPresenter in the Views and @InjectViewState preceding the presenter classes but my presenter classes also need to inject modules of their own which I'm doing via the constructor but I get this error

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.jackthreads.android/com.jackthreads.android.activities.PageActivity}: java.lang.IllegalStateException: Unable to instantiate class com.jackthreads.android.presenters.PagePresenter: make sure class name exists, is public, and has an empty constructor that is public
     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2661)
     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726)
     at android.app.ActivityThread.access$900(ActivityThread.java:172)
     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1421)
     at android.os.Handler.dispatchMessage(Handler.java:102)
     at android.os.Looper.loop(Looper.java:145)
     at android.app.ActivityThread.main(ActivityThread.java:5835)
     at java.lang.reflect.Method.invoke(Native Method)
     at java.lang.reflect.Method.invoke(Method.java:372)
     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399)
     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194)
  Caused by: java.lang.IllegalStateException: Unable to instantiate class com.jackthreads.android.presenters.PagePresenter: make sure class name exists, is public, and has an empty constructor that is public
     at com.arellomobile.mvp.DefaultPresenterFactory.createPresenter(DefaultPresenterFactory.java:30)
     at com.arellomobile.mvp.DefaultPresenterFactory.createPresenter(DefaultPresenterFactory.java:11)
     at com.arellomobile.mvp.MvpProcessor.getMvpPresenter(MvpProcessor.java:125)
     at com.arellomobile.mvp.MvpProcessor.getMvpPresenters(MvpProcessor.java:177)
     at com.arellomobile.mvp.MvpDelegate.onCreate(MvpDelegate.java:110)
     at com.jackthreads.android.activities.MvpAppCompatActivity.onCreate(MvpAppCompatActivity.java:15)

Searching Moxy and Dagger 2 brings up nothing and it seems like they're messing each other up.

[senneco]

Moxy says that it can't to instantiate class com.jackthreads.android.presenters.PagePresenter. Are sure class is public, and has an empty constructor that is public?

You could make gist, then I can help you ;)

[senneco]

Here you can see, ho to use injection in presenter class.

[maruf89]

The problem I was having after injecting like in your example was that I was getting uninstantiated injected objects. In other cases I got an error from MvpAppCompatActivity crashing at getMvpDelegate due to super class instantiation errors. I realize that doesn't help much until I get a code sample up. Unfortunately I had to move forward without using Moxy InjectPresenter/ViewState annotations as I couldn't get it working I'll post something up when I get a chance.

[senneco]

Sorry, but I don't understand. Are you need help?

[morder]

It's very unuseful to inject objects without constructor like this

@Inject
public ProfilePresenter(DataR dataR, MainN n, AuthM authM, BroadcastM broadcastM) {
}

because we need to call
YourApplication.getComponent().inject(this);
but we have complex dagger2 structure with many modules

[morder]

It will be good to inject presenters by some call in views, like

MvpFacade.getInstance().getMvpProcessor().addPresenter(View view, Presenter presenter,
PresenterType type);

[senneco]

No, it's wrong way for inject presenter. You can use @ProvidePresenter to provide your Presenter's instance. See more about this here and here.

[morder]

Thanks, it's helps :)

[vkotovv]

Related question - #100