上一篇的写了web端接口，本篇来讲解一下制作一个简单的糗事百科app,先上一张效果图
image.png
思路如下：
解析web端接口，获取需要的参数，然后将数据与listview条目绑定，图片请求框架用xutils
准备工作:下载好android studio 并配置好环境
导入xutils模块，gson模块
好，准备工作完毕，下面详述开发过程：
1.再manifest文件中添加网络请求权限
2.创建糗事百科实体类,可以用android studio 的GsonFormat插件生成：
package com.example.qiushibaike.Bean;
import java.util.List;
/**
* Created by lenovo on 2018/3/22.
*/
public class Datas {
/**
* currentPage : 1
* totalPage : 38
* count : 15
* qiushibaikes : [{"id":1,"imgurl":"//pic.qiushibaike.com/system/avtnew/3298/32987623/thumb/20170531181603.JPEG?imageView2/1/w/90/h/90","username":"\n(糗名招著)～老鼠\u2026\n","vote":"1678","comments":"29","content":"儿子小学三年级了，过年放寒假，跟老婆商量好了，开学前寒假作业语文她检查，数学我检查。","imgpath":""},{"id":2,"imgurl":"//pic.qiushibaike.com/system/avtnew/3059/30591370/thumb/20171217185111.JPEG?imageView2/1/w/90/h/90","username":"\n睡觉撞墙卡跟头\n","vote":"2860","comments":"27","content":"我家汪居然学会装死，装的特别像，晚上我让它踏躺好了，冲爸妈大喊\u201c不好了，狗死了！\u201d给我妈吓坏了，怎么弄它都不动，在旁边一直沉默的老爹开口了\u201c嗯！看样子是死了，准备烧水剥皮，炖狗肉吧！\u201d傻汪嗷的一声跳起来，围着爸妈转圈，不停摆尾，吐舌卖萌！也是醉了。。。","imgpath":""},{"id":3,"imgurl":"//pic.qiushibaike.com/system/avtnew/2843/28437800/thumb/20180315173338.JPEG?imageView2/1/w/90/h/90","username":"\n桑榆非晚风未凉\n","vote":"166","comments":"8","content":"我现在知道跟我一样高个子的表姐，为嘛被表姐夫当萝莉一样宠了。","imgpath":""},{"id":4,"imgurl":"//pic.qiushibaike.com/system/avtnew/3727/37277250/thumb/2018031822214788.JPEG?imageView2/1/w/90/h/90","username":"\n一笔前缘一缕烟0\n","vote":"194","comments":"17","content":"百度里面老跳出来这个东西是什么情况还是关不掉的那种 有没有知道的糗友 给支个招什么的[幻想][幻想]","imgpath":"//pic.qiushibaike.com/system/pictures/12011/120110868/medium/app120110868.jpg"},{"id":5,"imgurl":"//pic.qiushibaike.com/system/avtnew/2722/27224008/thumb/20171228224921.JPEG?imageView2/1/w/90/h/90","username":"\n直：：男\n","vote":"1065","comments":"33","content":"上级专家王主任来坐诊，今天病人特别多，性 病的有十几个。下午快下班时候不忙，谈论起找小 姐这个事儿，我似笑非笑的试探：\u201c王主任，作为男性 病方面的专家，您要是去找，肯定传 染不上什么病吧？！\u201d","imgpath":""},{"id":6,"imgurl":"//pic.qiushibaike.com/system/avtnew/3020/30201529/thumb/20180310222647.JPEG?imageView2/1/w/90/h/90","username":"\n道士下山会女神\n","vote":"7525","comments":"47","content":"老婆开车从小区倒出来，刚好小区门口有辆三轮与一辆大奔擦刮，几个交警正在现场处理，老婆一看一下倒不出，就摇下车窗冲几个交警喊道：让开，女司机。","imgpath":""},{"id":7,"imgurl":"//pic.qiushibaike.com/system/avtnew/3691/36912791/thumb/2018021823310272.JPEG?imageView2/1/w/90/h/90","username":"\n俺好莱芜的\n","vote":"2118","comments":"10","content":"\u201c老弟，你小时老漂亮了！好多邻居都抢着和咱们定娃娃亲！\u201d","imgpath":""},{"id":8,"imgurl":"//pic.qiushibaike.com/system/avtnew/2881/28814804/thumb/20150912193249.jpg?imageView2/1/w/90/h/90","username":"\n落跑的老男孩\n","vote":"422","comments":"1","content":"lz带96年小鲜肉同事一起出差，半夜门外有人按门铃（估计是折了翅的美女）被lz大声呵斥，早上醒来问他昨晚休息的怎么样，小伙子说昨晚被干（平声）醒了。。。，半夜起来关了空调。。。lz一听憋不住笑了，你说这么多年这坨都教会我什么了。。。","imgpath":""},{"id":9,"imgurl":"//pic.qiushibaike.com/system/avtnew/3374/33747823/thumb/2017050913112372.JPEG?imageView2/1/w/90/h/90","username":"\n梅朵0\n","vote":"190","comments":"45","content":"我们家对面住了一女的，二十多岁左右，3月2号左右搬过来的,她是租的房。我的天啊，今天我看见她晒了大概有19条内裤，4件内衣。现在的女孩也太懒了吧。屯到一块洗，不脏吗？","imgpath":"//pic.qiushibaike.com/system/pictures/12011/120111850/medium/app120111850.jpg"},{"id":10,"imgurl":"//pic.qiushibaike.com/system/avtnew/15/157166/thumb/20140512103831.jpg?imageView2/1/w/90/h/90","username":"\n很好的坏人℡\n","vote":"289","comments":"9","content":"我还用解释嘛？？？","imgpath":"//pic.qiushibaike.com/system/pictures/11986/119862939/medium/app119862939.jpg"},{"id":11,"imgurl":"//pic.qiushibaike.com/system/avtnew/3707/37076223/thumb/20180228125455.JPEG?imageView2/1/w/90/h/90","username":"\n姑苏云琪\n","vote":"1602","comments":"26","content":"半夜饿了，起床找吃的，老公迷迷糊糊睁开眼问我：这大半夜的，你想吃什么？","imgpath":""},{"id":12,"imgurl":"//pic.qiushibaike.com/system/avtnew/1183/11837809/thumb/2016120507194283.JPEG?imageView2/1/w/90/h/90","username":"\n帝国守卫\n","vote":"5585","comments":"73","content":"和女朋友出去玩，路边献血送洋娃娃。女朋友想要，我当然义不容辞，撸起袖子就上。","imgpath":""},{"id":13,"imgurl":"//pic.qiushibaike.com/system/avtnew/1297/12973477/thumb/20160601085737.jpg?imageView2/1/w/90/h/90","username":"\n0海之梦幻0\n","vote":"125","comments":"3","content":"买烤鸭碰到20年前的幼儿园老师，怕认错人，不敢上去打招呼，直到把这张照片给我妈确认后，我才相信自己没有错.....","imgpath":"//pic.qiushibaike.com/system/pictures/12011/120111975/medium/app120111975.jpg"},{"id":14,"imgurl":"//pic.qiushibaike.com/system/avtnew/3392/33921103/thumb/201706221753314.PNG?imageView2/1/w/90/h/90","username":"\n无数春闺梦里人\n","vote":"71","comments":"1","content":"高三的时候，学校查手机查的很紧，班主任经常来寝室突击检查。有一次，我一个人在寝室撸的正欢，班主任突然来检查，我吓得马上钻进被子里，结果班主任以为我在玩手机，一掀被子射了她一脸，后面一个学期上她的课都是尴尬的。","imgpath":""},{"id":15,"imgurl":"","username":"","vote":"461","comments":"7","content":"楼主是宾馆服务员，今天一个满头白发的男的来开房，看着要有七八十了，满脸的老年斑。他进房间后，房门不关严留一条缝，领班来查房时说楼主那间房房门咋不关？楼主说客人没关。一会儿和老员工说起此事，老员工说让我们别管，客人经常来开房，那是给一个女的留门的。又过一会儿我们下班那个客人也退房了。一个人走的，听老员工说那女的没来，客人走时看着有些失望，也有点失落！","imgpath":""}]
* totalCount : 556
*/
private int currentPage;
private int totalPage;
private int count;
private int totalCount;
private List qiushibaikes;
public int getCurrentPage() {
return currentPage;
}
public void setCurrentPage(int currentPage) {
this.currentPage = currentPage;
}
public int getTotalPage() {
return totalPage;
}
public void setTotalPage(int totalPage) {
this.totalPage = totalPage;
}
public int getCount() {
return count;
}
public void setCount(int count) {
this.count = count;
}
public int getTotalCount() {
return totalCount;
}
public void setTotalCount(int totalCount) {
this.totalCount = totalCount;
}
public List getQiushibaikes() {
return qiushibaikes;
}
public void setQiushibaikes(List qiushibaikes) {
this.qiushibaikes = qiushibaikes;
}
public static class QiushibaikesBean {
/**
* id : 1
* imgurl : //pic.qiushibaike.com/system/avtnew/3298/32987623/thumb/20170531181603.JPEG?imageView2/1/w/90/h/90
* username :
(糗名招著)～老鼠…
* vote : 1678
* comments : 29
* content : 儿子小学三年级了，过年放寒假，跟老婆商量好了，开学前寒假作业语文她检查，数学我检查。
* imgpath :
*/
private int id;
private String imgurl;
private String username;
private String vote;
private String comments;
private String content;
private String imgpath;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getImgurl() {
return imgurl;
}
public void setImgurl(String imgurl) {
this.imgurl = imgurl;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getVote() {
return vote;
}
public void setVote(String vote) {
this.vote = vote;
}
public String getComments() {
return comments;
}
public void setComments(String comments) {
this.comments = comments;
}
public String getContent() {
return content;
}
public void setContent(String content) {
this.content = content;
}
public String getImgpath() {
return imgpath;
}
public void setImgpath(String imgpath) {
this.imgpath = imgpath;
}
}
}
3.创建存放url的类UriPath
package com.example.qiushibaike.utils;
/**
* ip地址为服务器地址
*/
public class UriPath {
public static final String huodongPath="http://192.168.3.142:8080/QiuShiSample/QiushiServlet?page=";
}
4.创建自定义adapter基类
package com.example.qiushibaike.utils;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import java.util.List;
public abstract class MyBaseAdapter extends BaseAdapter {
private Context context;
private List datas;
//提供给子类的布局构造器
private LayoutInflater layoutInflater;
public MyBaseAdapter(Context context, List datas){
this.context = context;
this.datas = datas;
layoutInflater = LayoutInflater.from(context);
}
@Override
public int getCount() {
return datas.size();
}
@Override
public Object getItem(int position) {
return datas.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
return getItemView(position,convertView,parent);
}
//填充数据
public void addDatas(List list){
datas.addAll(list);
notifyDataSetChanged();
}
//清除数据
public void clearDatas(){
datas.clear();
notifyDataSetChanged();
}
/**
* 提供布局填充器的
* @return
*/
public LayoutInflater getLayoutInflater(){
return layoutInflater;
}
//给子类用
public abstract View getItemView(int position, View convertView, ViewGroup parent);
}
5.创建糗事百科adapter类QiushiAdapter
package com.example.qiushibaike.utils;
import android.content.Context;
import android.graphics.Color;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import com.example.qiushibaike.Bean.Datas;
import com.example.qiushibaike.R;
import com.lidroid.xutils.BitmapUtils;
import java.util.HashMap;
import java.util.List;
/**
* Created by Administrator on 2016/6/22 0022.
*/
public class QiushiAdapter extends MyBaseAdapter{
private Context context;
private HashMap hm = new HashMap();
public QiushiAdapter(Context context, List datas) {
super(context, datas);
this.context = context;
}
@Override
public View getItemView(int position, View convertView, ViewGroup parent) {
ViewHolder viewHolder=null;
if(convertView==null){
convertView=getLayoutInflater().inflate(R.layout.item11,null);
viewHolder=new ViewHolder(convertView);
convertView.setTag(viewHolder);
}
else {
viewHolder= (ViewHolder) convertView.getTag();
}
Datas.QiushibaikesBean datasBean= (Datas.QiushibaikesBean) getItem(position);
viewHolder.textView_name.setText(datasBean.getUsername());
viewHolder.textView_name.setTextColor(Color.RED);
viewHolder.textView_title.setText( datasBean.getContent());
//加载网络图片并在imageview展示
String url=String.format("http:"+datasBean.getImgurl());
BitmapUtils bitmapUtils = new BitmapUtils(context);
bitmapUtils.display(viewHolder.imageView_pic, url);
String imgpath=String.format("http:"+datasBean.getImgpath());
BitmapUtils bitmapUtils1 = new BitmapUtils(context);
bitmapUtils1.display(viewHolder.imageView2, imgpath);
return convertView;
}
//条目复用
public class ViewHolder{
ImageView imageView_pic,imageView2;
TextView textView_title,textView_name;
public ViewHolder(View convertView) {
imageView_pic= convertView.findViewById(R.id.imageView1);
textView_title= convertView.findViewById(R.id.content);
textView_name=convertView.findViewById(R.id.text_name);
imageView2=convertView.findViewById(R.id.imageView2);
}
}
}
6.MainActivity代码如下
package com.example.qiushibaike;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.LayoutInflater;
import android.widget.AbsListView;
import android.widget.ListView;
import com.example.qiushibaike.Bean.Datas;
import com.example.qiushibaike.utils.QiushiAdapter;
import com.example.qiushibaike.utils.UriPath;
import com.google.gson.Gson;
import com.lidroid.xutils.exception.HttpException;
import com.lidroid.xutils.http.ResponseInfo;
import com.lidroid.xutils.http.callback.RequestCallBack;
import com.lidroid.xutils.http.client.HttpRequest;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
private ListView listView;
Boolean flag;
public LayoutInflater inflater;
public int last_index;
public int total_index;
public boolean isLoading = false;//表示是否正处于加载状态
private List beans;
private QiushiAdapter qiushiAdapter;
private int page=1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView= (ListView) findViewById(R.id.listView);
loadData(page);
System.out.println("ttttttttttttttttttttttttttttttt");
beans=new ArrayList<>();
qiushiAdapter=new QiushiAdapter(this,beans);
listView.setAdapter(qiushiAdapter);
initListRefresh();
}
private void initListRefresh() {
this.listView.setOnScrollListener(new AbsListView.OnScrollListener() {
@Override
public void onScrollStateChanged(AbsListView absListView, int i) {
isLoading=false;
if(last_index == total_index && (i == AbsListView.OnScrollListener.SCROLL_STATE_IDLE))
{
//表示此时需要显示刷新视图界面进行新数据的加载(要等滑动停止)
if(!isLoading)
{
//上拉刷新
isLoading = true;
loadData(++page);
Log.i("===page11===",page+"");
}
}
}
@Override
public void onScroll(AbsListView absListView, int i, int i1, int i2) {
last_index = i+i1;
total_index = i2;
flag = ((i+i1) == i2);
Log.i("===page111===",last_index+"========="+total_index);
}
});
}
//xutils请求数据
private void loadData(int page) {
com.lidroid.xutils.HttpUtils httpUtils = new com.lidroid.xutils.HttpUtils();
Log.i("pagepath===",String.format(UriPath.huodongPath+page));
httpUtils.send(HttpRequest.HttpMethod.GET, String.format(UriPath.huodongPath+page), new RequestCallBack() {
@Override
public void onSuccess(ResponseInfo responseInfo) {
System.out.println("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa");
Gson gson = new Gson();
Datas huodongBean = gson.fromJson(responseInfo.result, Datas.class);
Log.i("========dddddddd=====",huodongBean+"");
qiushiAdapter.addDatas(huodongBean.getQiushibaikes());
}
@Override
public void onFailure(HttpException e, String s) {
}
});
}
}
7.mainactivity布局activity_main.xml代码如下
8.listview条目布局item11.xml代码如下