MVVM base fragment format

BaseFragment.java

package XXXXX;

import android.arch.lifecycle.ViewModel;
import android.os.Bundle;
import android.support.annotation.LayoutRes;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import butterknife.ButterKnife;

public abstract class BaseFragment<VM extends ViewModel> extends Fragment {

  protected VM viewModel;

  /**
   * @return container layout id :) R.layout.fragment_XXX
   */
  protected abstract @LayoutRes int getLayoutResId();

  /**
   * process
   * 1. butter-knife bind
   * 2. provided view-model
   * 3. init components
   * 4. initViews
   * 5. subscribeDataStream
   *
   * @return rootView
   */
  @Nullable @Override
  public View onCreateView(LayoutInflater inflater,
                           @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    View view = inflater.inflate(getLayoutResId(), container, false);
    ButterKnife.bind(this, view);
    this.viewModel = performViewModelInjection();

    initComponents(view);
    initViews(view);
    subscribeDataStream(view);
    return view;
  }

  protected abstract VM performViewModelInjection();

  /**
   * object initialize :) retrofit adapter
   *
   * @param rootView fragment container
   */
  protected abstract void initComponents(View rootView);

  /**
   * default data/state bind to view
   *
   * @param rootView fragment container
   */
  protected abstract void initViews(View rootView);

  /**
   * subscribe live-data
   *
   * @param rootView fragment container
   */
  protected abstract void subscribeDataStream(View rootView);
}

직접 라이프 사이클을 관리하는 경우 스페셜라이즈된 클래스에서 직접 implements LifecycleOwner 를 해서, Provide 를 해주면 되고,
activity 것을 가져와서 사용해도 된다.