dependency injection – Android error "android.app.Application does not implement dagger.android.HasActivityInjector"-ThrowExceptions

Exception or error:

I’m trying to run my app and every time I click on a button and it calls a specific Activity (ExtendedActivity) I get the following error :

Process: com.converter.android.dailycope, PID: 28573
                  java.lang.RuntimeException: Unable to start activity ComponentInfo{com.converter.android.dailycope/com.converter.android.dailycope.ui.extended.ExtendedActivity}: java.lang.RuntimeException: android.app.Application does not implement dagger.android.HasActivityInjector
                      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)
                      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
                      at android.app.ActivityThread.-wrap11(ActivityThread.java)
                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
                      at android.os.Handler.dispatchMessage(Handler.java:102)
                      at android.os.Looper.loop(Looper.java:148)
                      at android.app.ActivityThread.main(ActivityThread.java:5417)
                      at java.lang.reflect.Method.invoke(Native Method)
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
                   Caused by: java.lang.RuntimeException: android.app.Application does not implement dagger.android.HasActivityInjector
                      at dagger.android.AndroidInjection.inject(AndroidInjection.java:48)
                      at com.converter.android.dailycope.ui.base.BaseActivity.performDependencyInjection(BaseActivity.java:105)
                      at com.converter.android.dailycope.ui.base.BaseActivity.onCreate(BaseActivity.java:35)
                      at com.converter.android.dailycope.ui.extended.ExtendedActivity.onCreate(ExtendedActivity.java:34)
                      at android.app.Activity.performCreate(Activity.java:6251)
                      at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
                      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)

The error is on line super.onCreate(savedInstanceState)

    public class ExtendedActivity extends BaseActivity<ActivityExtendedBinding, ExtendedViewModel> {

    @Inject
    ViewModelProvider.Factory mViewModelFactory;
    ActivityExtendedBinding mActivityStartBinding;
    private ExtendedViewModel mExtendedViewModel;

    private String caps, horos, tipo;
    private String data, prefString;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    (...)

The class where I have the HasActivityInjector


    public class Cope extends Application implements HasActivityInjector {

    @Inject
    DispatchingAndroidInjector<Activity> activityDispatchingAndroidInjector;


    @Override
    public void onCreate() {
        super.onCreate();

        DaggerExtendedComponent.builder().application(this).build().inject(this);

        if (BuildConfig.DEBUG) {
            Timber.plant(new Timber.DebugTree());
        }

    }


    @Override
    public AndroidInjector<Activity> activityInjector() {
        return activityDispatchingAndroidInjector;
    }
}

Can you please help me?

How to solve:

I solved my problem adding android:name in AndroidManifest.xml

###

If your implementation is correct then please check in manifest file if you have add/assigned the name of Application Tag.

 <application
    android:name=".base.BaseApplication"
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"/>

###

Your application class should implement HasActivityInjector. Use official documentation to setup dagger properly.

###

I faced the same issue exactly. Just clean and rebuild the project solved the issue.

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