Magisk/app/src/main/java/com/topjohnwu/magisk/BaseRepoFragment.java

package com.topjohnwu.magisk;

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import com.topjohnwu.magisk.module.Module;
import com.topjohnwu.magisk.module.Repo;
import com.topjohnwu.magisk.utils.Utils;

import java.util.List;

import butterknife.BindView;
import butterknife.ButterKnife;

public abstract class BaseRepoFragment extends Fragment {

    @BindView(R.id.recyclerView)
    RecyclerView recyclerView;
    @BindView(R.id.empty_rv)
    TextView emptyTv;
    private SwipeRefreshLayout mSwipeRefreshLayout;
    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.single_module_fragment, container, false);
        mSwipeRefreshLayout = (SwipeRefreshLayout) view.findViewById(R.id.swipeRefreshLayout);
        mSwipeRefreshLayout.setOnRefreshListener(() -> {
            refreshItems();
        });

        ButterKnife.bind(this, view);

        if (listRepos().size() == 0) {
            emptyTv.setVisibility(View.VISIBLE);
            recyclerView.setVisibility(View.GONE);

            return view;
        }

        recyclerView.setAdapter(new ReposAdapter(listRepos()) {

        });
        return view;
    }

    void refreshItems() {
        Log.d("Magisk", "Calling refreshitems for online");
        new Utils.LoadModules(getActivity(),true).execute();
        onItemsLoadComplete();
    }

    void onItemsLoadComplete() {
        // Update the adapter and notify data set changed
        // ...

        // Stop refresh animation
        mSwipeRefreshLayout.setRefreshing(false);
    }
    protected abstract List<Repo> listRepos();
}