CODEWITHSUNDEEP
androiddependency-injectiondagger-2
AndroidEnthusiast
AndroidEnthusiast

Reputation: 6657

Dagger 2 injection fails due to class cast exception

I'm using dagger for dependency injection and from time to time I get this class cast exception:

Caused by: java.lang.ClassCastException: android.app.Application cannot be   
           cast to myPackage.MyApplication                                                                              
       at myPackage.ui.activity.BaseActivity.injectAppComponent(BaseActivity.java:63)                                                                               
       at myPackage.ui.activity.BaseActivity.onCreate(BaseActivity.java:42)

Here's my Base Activity method where I do the injection:

protected void injectAppComponent() {
    ((MyApplication) getApplication()).getAppComponent().inject(this);
}

Application Class

public class MyApplication extends Application {

private AppComponent appComponent;

private void injectComponent() {
    appComponent = DaggerAppComponent.builder()
            .appModule(new AppModule(this)).build();
    appComponent.inject(this);
}


public AppComponent getAppComponent() {
    return appComponent;
}
}

In my manifest, i define the app name like this: 

application
    android:name="myPackage.MyApplication"

But I still experience this issue, any thoughts why this is happening?

Upvotes: 4

Views: 2789

Answers (1)

Grant Shearer
Grant Shearer

Reputation: 31

You probably aren't still looking for an answer, but I just ran into this issue and my problem was that the interface of the class that I was trying to inject was package-private.

I changed it to public and everything worked.

Upvotes: 3

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