下拉刷新的简单用法

package com.jereh.todaynewstop.activity;
import android.os.Bundle;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import com.handmark.pulltorefresh.library.PullToRefreshBase;
import com.handmark.pulltorefresh.library.PullToRefreshListView;
import com.jereh.todaynewstop.R;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
public class PullToRefreshBaseActivity extends AppCompatActivity {
    private ListView listView;
    private PullToRefreshListView pullToRefreshListView;
    private ArrayAdapter adapter;
    private List<String > list = new ArrayList<>();
    private Handler handler = new Handler();
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_pull_to_refresh_base);
        pullToRefreshListView = (PullToRefreshListView)findViewById(R.id.pullListView);
        listView = pullToRefreshListView.getRefreshableView();
        adapter = new ArrayAdapter(this,R.layout.pull_refresh_item,R.id.food,list);
        listView.setAdapter(adapter);
        initFood();
        adapter.notifyDataSetChanged();
        //监听下拉刷新时间,
        pullToRefreshListView.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener<ListView>() {
            @Override
            public void onRefresh(PullToRefreshBase<ListView> refreshView) {
                handler.postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        pullToRefreshListView.onRefreshComplete();
                    }
                },1000);
            }
        });
    }
    private void initFood(){
        list.addAll(Arrays.asList(getResources().getStringArray(R.array.food)));
    }
}