使用谷歌提供的SwipeRefreshLayout下拉控件进行下拉刷新的实现数据的刷新

package com.loaderman.swiperefreshdemo;
 
import android.os.Bundle;
import android.os.Handler;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import java.util.ArrayList;
import java.util.List;
/**
 * design库中包含V7包 V7包中包含V4包
 */
public class MainActivity extends AppCompatActivity {
 
    private SwipeRefreshLayout swip_refresh;
    private RecyclerView recyclerView;
    private List<String> titleList;
    private MyAdapter adapter;
    private int page = 1;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();
        initEvent();
        initData();
    }
    private void initData() {
        swip_refresh.post(new Runnable() {
            @Override
            public void run() {
                swip_refresh.setRefreshing(true);
            }
        });
        getData(1, "Load");
    }
    private void initEvent() {
        swip_refresh.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
            @Override
            public void onRefresh() {
                Log.e("main", "refresh");
                //titleList.clear();
                getData(2, "Refresh");
            }
        });
    }
    private void initView() {
        swip_refresh = (SwipeRefreshLayout) findViewById(R.id.swip_refresh);
        recyclerView = (RecyclerView) findViewById(R.id.recyclerView);
        recyclerView.setLayoutManager(new LinearLayoutManager(this));
        titleList = new ArrayList<>();
        adapter = new MyAdapter(titleList);
        recyclerView.setAdapter(adapter);
        //设置刷新时动画的颜色，可以设置4个
        swip_refresh.setColorSchemeResources(android.R.color.holo_blue_light, android.R.color.holo_red_light, android.R.color.holo_orange_light, android.R.color.holo_green_light);
    }
    private void getData(final int page, final String content) {
        new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {
                int startPosition = 10 * (page - 1);
                int endPosition = 10 * page;
                for (int i = startPosition; i < endPosition; i++) {
                    titleList.add(0,content + i);
                }
                adapter.notifyDataSetChanged();
                swip_refresh.setRefreshing(false);
            }
        }, 3000);
    }
}

package com.loaderman.swiperefreshdemo;
 
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
 
import java.util.List;
 
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder> {
 
    private List<String> list;
 
    public MyAdapter(List<String> list) {
        this.list = list;
    }
 
    @Override
    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.content_main, parent, false);
        return new MyViewHolder(view);
    }
 
    @Override
    public void onBindViewHolder(MyViewHolder holder, int position) {
        holder.txt_item.setText(list.get(position));
    }
 
    @Override
    public int getItemCount() {
        return list == null ? 0 : list.size();
    }
 
    public static class MyViewHolder extends RecyclerView.ViewHolder {
        TextView txt_item;
 
        public MyViewHolder(View itemView) {
            super(itemView);
            txt_item = (TextView) itemView.findViewById(R.id.txt_item);
        }
    }
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.SwipeRefreshLayout
　 　 xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/swip_refresh"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
    <android.support.v7.widget.RecyclerView
        android:id="@+id/recyclerView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"></android.support.v7.widget.RecyclerView>
</android.support.v4.widget.SwipeRefreshLayout>

content_main.xml

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/txt_item"
    android:layout_width="match_parent"
    android:layout_height="40dp"
    android:gravity="center"/>

效果图: