Android_XRecyclerView上拉下拉加载数据

一:介绍

XRecyclerView对Recyclerview进行了扩展,使用的方式与Recyclerview一样,可实现上拉加载下拉刷新功能

二:依赖, manifests文件中加网络权限

compile 'com.jcodecraeer:xrecyclerview:1.2.0'

三:布局

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="activity.example.com.xrecyclerview.MainActivity">

<com.jcodecraeer.xrecyclerview.XRecyclerView
android:id="@+id/xrecyclerview"
android:layout_width="match_parent"
android:layout_height="wrap_content"></com.jcodecraeer.xrecyclerview.XRecyclerView>

</RelativeLayout>

四:代码

package activity.example.com.xrecyclerview;

import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;

import com.jcodecraeer.xrecyclerview.ProgressStyle;
import com.jcodecraeer.xrecyclerview.XRecyclerView;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class MainActivity extends AppCompatActivity {

private XRecyclerView xrecyclerview;
private int i=0;
private List<ListBean> list;
private XRAdapter xrAdapter;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//获取id
xrecyclerview = (XRecyclerView)findViewById(R.id.xrecyclerview);
//设置可上拉
xrecyclerview.setPullRefreshEnabled(true);
xrecyclerview.setLoadingMoreEnabled(true);
//设置上拉下拉样式
xrecyclerview.setRefreshProgressStyle(ProgressStyle.BallSpinFadeLoader);
xrecyclerview.setLaodingMoreProgressStyle(ProgressStyle.BallClipRotate);
// 线性布局管理器   VERTICAL默认样式/竖向显示       第三个参数是数据是否到过来显示
LinearLayoutManager manager = new LinearLayoutManager(this,LinearLayoutManager.VERTICAL,false);
//添加布局管理器
xrecyclerview.setLayoutManager(manager);
//创建数据集合
list = new ArrayList<>();
//设置适配器
xrAdapter = new XRAdapter(MainActivity.this, list);
xrecyclerview.setAdapter(xrAdapter);
//设置监听
xrecyclerview.setLoadingListener(new XRecyclerView.LoadingListener() {
@Override
public void onRefresh() {
i=0;
list.clear();
loaddata(i);
xrecyclerview.refreshComplete();
}

@Override
public void onLoadMore() {
i++;
loaddata(i);
xrecyclerview.loadMoreComplete();
}
});
//加载数据
loaddata(i);
}

private void loaddata(int i) {
Map<String, String> map = new HashMap<>();
HttpUtils.getInstance().get("http://tingapi.ting.baidu.com/v1/restserver/ting?method=baidu.ting.billboard.billList&type=1&size=10&offset="+i,map,new CallBack(){

@Override
public void onSuccess(Object o) {
Bean bean = (Bean)o;
List<Bean.SongListBean> song_list = bean.getSong_list();
for(int i=0;i<song_list.size();i++){
list.add(new ListBean(song_list.get(i).getAlbum_1000_1000(),song_list.get(i).getAuthor()));
}
xrAdapter.notifyDataSetChanged();
}

@Override
public void onFailed(Exception e) {

}
},Bean.class);
}
}

五:适配器

package activity.example.com.xrecyclerview;

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import com.bumptech.glide.Glide;

import java.util.List;

/**
* Created by 壹颗大金星 on 2017/11/12.
*/

public class XRAdapter extends RecyclerView.Adapter<XRAdapter.ViewHolder>{

private Context context;
private List<ListBean> list;

public XRAdapter(Context context, List<ListBean> list) {
this.context = context;
this.list = list;
}

//创建ViewHolder
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
//子条目布局
View view = View.inflate(context, R.layout.item, null);
ViewHolder holder = new ViewHolder(view);
return holder;
}

//绑定ViewHolder,把数据和视图进行绑定
@Override
public void onBindViewHolder(ViewHolder holder, final int position) {
Glide.with(context).load(list.get(position).getImg()).into(holder.image);
holder.tv_title.setText(list.get(position).getName());
}

@Override
public int getItemCount() {
return list.size();
}

class ViewHolder extends RecyclerView.ViewHolder{

private TextView tv_title;
private ImageView image;

public ViewHolder(View itemView) {
super(itemView);
//itemView一个条目的视图
image = (ImageView)itemView.findViewById(R.id.image);
tv_title = (TextView)itemView.findViewById(R.id.tv_title);
}
}
}