HomeFragment

package page;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.support.v4.app.Fragment;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.widget.LinearLayoutManager;
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.Toast;

import com.transvision.bertho.transvisiondashboardapp.R;

import java.util.ArrayList;
import java.util.List;

import adapter.ChannelAdapter;
import butterknife.Bind;
import butterknife.ButterKnife;
import model.Channel;
import model.ChannelResponse;
import rest.ApiClient;
import rest.ApiInterface;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;


public class HomeFragment extends Fragment implements SwipeRefreshLayout.OnRefreshListener {

    @Bind(R.id.movies_recycler_view) RecyclerView recyclerView;
    @Bind(R.id.swipe_layout) SwipeRefreshLayout swipeRefreshLayout;

    private static final String TAG = HomeFragment.class.getSimpleName();

    private ChannelAdapter adapter;
    List<Channel> listChannel;

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

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

        View rootView = inflater.inflate(R.layout.fragment_home, container, false);
        ButterKnife.bind(this, rootView);

        listChannel = new ArrayList<>();

        setUpSwipeLayout();
        setUpAdapter();
        setUpRecyclerview();

        new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {
                load();
            }
        }, 500);

        return rootView;
    }

    protected void setUpSwipeLayout()
    {
        swipeRefreshLayout.setColorSchemeResources(R.color.colorPrimary, R.color.colorAccent);
        swipeRefreshLayout.setOnRefreshListener(this);
    }

    private void setUpAdapter(){
        if(adapter == null){
            adapter = new ChannelAdapter(listChannel, R.layout.list_channel, getActivity());
        }
    }

    private void setUpRecyclerview(){
        recyclerView.clearOnScrollListeners();
        recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
        recyclerView.setAdapter(adapter);
    }

    private void load(){
        swipeRefreshLayout.setRefreshing(true);
        ApiInterface apiService = ApiClient.getChannel().create(ApiInterface.class);
        Call<ChannelResponse> call = apiService.getItems();

        call.enqueue(new Callback<ChannelResponse>() {
            @Override
            public void onResponse(Call<ChannelResponse> call, Response<ChannelResponse> response) {

                listChannel = response.body().getItems();
                adapter = new ChannelAdapter(listChannel, R.layout.list_channel, getActivity());
                recyclerView.setAdapter(adapter);
                recyclerView.clearOnScrollListeners();
                recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
                adapter.notifyDataSetChanged();

                Log.e(TAG, "CONNECTION SUCCESS");
                swipeRefreshLayout.setRefreshing(false);
            }

            @Override
            public void onFailure(Call<ChannelResponse> call, Throwable t) {
                Log.e(TAG, t.toString());
                showToast("CONNECTION ERROR");
                swipeRefreshLayout.setRefreshing(false);
            }
        });
    }

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);
    }

    @Override
    public void onDetach() {
        super.onDetach();
    }

    public void showToast(String output){
        Toast.makeText(getActivity(), output, Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onRefresh() {
        load();
    }
}