Starting details activity from OuterItem about garland-view-android

[dvg4000]

You can use EventBus, just like in InnerItem:

public class OuterItem extends HeaderItem {
  ...
  private InnerData mHeaderData;

  public OuterItem(View itemView, RecyclerView.RecycledViewPool pool) {
        super(itemView);
        ...

        mHeader.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if (mHeaderData != null) {
                    EventBus.getDefault().post(new OuterItemClickEvent(mHeaderData, mHeader, mAvatarBorder));
                }
            }
        });
  }

  void setContent(@NonNull List<InnerData> innerDataList) {
        ...
        mHeaderData = header;
  }

  void clearContent() {        
        ...
        mHeaderData = null;
    }
}

public class MainActivity extends AppCompatActivity implements GarlandApp.FakerReadyListener {
  ...

 @Subscribe(threadMode = ThreadMode.MAIN)
    public void OnOuterItemClick(OuterItemClickEvent event) {
       DetailsActivity.start(event.... );
    }
}

[linkinamine]

Thanks @dvg4000, will check it out.