1.MainActivity页面
package com.example.week2_01;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import com.example.Util.NetUtil;
import com.example.bean.BunnerBean;
import com.example.bean.NewsBean;
import me.maxwin.view.XListView;
public class MainActivity extends AppCompatActivity {
private String bannerUrl="http://www.zhaoapi.cn/quarter/getAd";
private String newUrl = "http://172.17.8.100/movieApi/movie/v1/findHotMovieList?count=%d&page=%d";
private int mPage;
private XListView xListView;
private CountAdaper mAdaper;
private final int LOAD_COUNT = 10;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mPage = 1;
//获取资源id
xListView = findViewById(R.id.xlistview);
//创建适配器
mAdaper = new CountAdaper(this);
xListView.setAdapter(mAdaper);
//点击监听
xListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
//跳转
Intent intent = new Intent(MainActivity.this,LoginActivity.class);
//获取值
String name = mAdaper.getItem(position-1).getName();
String summary = mAdaper.getItem(position-1).getSummary();
//传值
intent.putExtra("name",name);
intent.putExtra("summary",summary);
//执行
startActivity(intent);
}
});
//设置支持加载
xListView.setPullLoadEnable(true);
//设置支持刷新
xListView.setPullRefreshEnable(true);
//xlistview刷新监听
xListView.setXListViewListener(new XListView.IXListViewListener() {
//刷新
@Override
public void onRefresh() {
mPage = 1;
//加载数据的方法
loadData();
}
//加载
@Override
public void onLoadMore() {
mPage++;
//加载数据的方法
loadData();
}
});
loadData();
}
//加载数据的方法
private void loadData() {
if(mPage == 1){
//加载banner的方法
loadBunnerData();
//加载新闻的方法
loadNewData();
}else{
//加载新闻的方法
loadNewData();
}
}
private void loadNewData() {
NetUtil.getInstance().getResult(String.format(newUrl, LOAD_COUNT, mPage), NewsBean.class, new NetUtil.CallBack<NewsBean>() {
@Override
public void onSuccess(NewsBean o) {
if(mPage == 1){
//刷新
mAdaper.setmResult(o.getResult());
}else{
//加载
mAdaper.addResult(o.getResult());
}
//停止刷新
xListView.stopRefresh();
//停止加载
xListView.stopLoadMore();
//判断集合长度小于数据长度停止刷新
if(o.getResult().size()<LOAD_COUNT){
xListView.setPullLoadEnable(false);
}
}
});
}
private void loadBunnerData() {
NetUtil.getInstance().getResult(bannerUrl, BunnerBean.class, new NetUtil.CallBack<BunnerBean>() {
@Override
public void onSuccess(BunnerBean o) {
mAdaper.setmBanner(o.getData());
}
});
}
}
2.展示数据适配器
package com.example.week2_01;
import android.annotation.SuppressLint;
import android.content.Context;
import android.os.Handler;
import android.os.Message;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import com.example.bean.BunnerBean;
import com.example.bean.NewsBean;
import com.nostra13.universalimageloader.core.ImageLoader;
import java.util.ArrayList;
import java.util.List;
public class CountAdaper extends BaseAdapter {
private List<BunnerBean.DataBean> mBanner;
private List<NewsBean.ResultBean> mResult;
private Context mContext;
private final int ITEM_COUNT = 2;
private final int ITEM_NEW = 0;
private final int ITEM_BUNNER = 1;
public CountAdaper(Context mContext) {
this.mContext = mContext;
//初始化
mBanner = new ArrayList<>();
mResult = new ArrayList<>();
}
//是否有banner
public boolean hasBanner(){
//返回长度大于0有bunner
return mBanner.size()>0;
}
//更新banner
public void setmBanner(List<BunnerBean.DataBean> banners){
//清除数据
mBanner.clear();
if(banners!=null){
//添加数据
mBanner.addAll(banners);
}
//刷新适配器
notifyDataSetChanged();
}
//更新新闻数据下拉刷新
public void setmResult(List<NewsBean.ResultBean> results){
//清除数据
mResult.clear();
if(results!=null){
//添加数据
mResult.addAll(results);
}
//刷新适配器
notifyDataSetChanged();
}
//追加新闻数据上拉加载
public void addResult(List<NewsBean.ResultBean> results){
if(results!=null){
//添加刷新的数据
mResult.addAll(results);
}
//刷新适配器
notifyDataSetChanged();
}
@Override
public int getCount() {
return hasBanner()?mResult.size()+1:mResult.size();
}
@Override
public NewsBean.ResultBean getItem(int position) {
return mResult.get(hasBanner()?position-1:position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public int getViewTypeCount() {
return ITEM_COUNT;
}
@Override
public int getItemViewType(int position) {
return position == 0 && hasBanner()?ITEM_BUNNER:ITEM_NEW;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if(getItemViewType(position) == ITEM_BUNNER) {
BunnerViewHolder holder;
if(convertView == null){
convertView = LayoutInflater.from(mContext).inflate(R.layout.bunneritem,parent,false);
holder = new BunnerViewHolder(convertView);
}else{
holder = (BunnerViewHolder) convertView.getTag();
}
holder.bindBunner(mContext,mBanner);
}else{
NewViewHolder holder;
if(convertView == null){
convertView = LayoutInflater.from(mContext).inflate(R.layout.newsitem,parent,false);
holder = new NewViewHolder(convertView);
}else{
holder = (NewViewHolder) convertView.getTag();
}
holder.bindResult(getItem(position));
}
return convertView;
}
//创建寄存器BunnerViewHolder
class BunnerViewHolder{
ViewPager viewPager;
@SuppressLint("HandlerLeak")
//创建Handler
private Handler handler = new Handler(){
@Override
public void handleMessage(Message msg) {
viewPager.setCurrentItem(viewPager.getCurrentItem()+1);
handler.sendEmptyMessageDelayed(0,2000);
}
};
//获取资源id
public BunnerViewHolder(View convertView) {
viewPager = convertView.findViewById(R.id.viewpage);
convertView.setTag(this);
}
//赋值
public void bindBunner(Context context ,List<BunnerBean.DataBean> mBanner) {
//先取消掉切换任务
handler.removeCallbacksAndMessages(null);
//将适配器设置给viewPager
viewPager.setAdapter(new BunnerAdaper(mBanner,context));
//让ViewPager位于中间
viewPager.setCurrentItem(viewPager.getAdapter().getCount()/2);
//开始轮播
handler.sendEmptyMessageDelayed(0,2000);
}
}
//创建寄存器NewViewHolder
class NewViewHolder{
ImageView image;
TextView name,summary;
//获取资源id
public NewViewHolder(View convertView) {
image = convertView.findViewById(R.id.image);
name = convertView.findViewById(R.id.name);
summary = convertView.findViewById(R.id.summary);
//设置tag
convertView.setTag(this);
}
//赋值
public void bindResult(NewsBean.ResultBean item) {
name.setText(item.getName());
summary.setText(item.getSummary());
//设置图片
ImageLoader.getInstance().displayImage(item.getImageUrl(),image);
}
}
}
3.轮播图适配器
package com.example.week2_01;
import android.content.Context;
import android.support.annotation.NonNull;
import android.support.v4.view.PagerAdapter;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import com.example.bean.BunnerBean;
import com.nostra13.universalimageloader.core.ImageLoader;
import java.util.List;
public class BunnerAdaper extends PagerAdapter {
private List<BunnerBean.DataBean> mData;
private Context mContext;
public BunnerAdaper(List<BunnerBean.DataBean> mData, Context mContext) {
this.mData = mData;
this.mContext = mContext;
}
@Override
public int getCount() {
return 5000;
}
@Override
public boolean isViewFromObject(@NonNull View view, @NonNull Object o) {
return view == o;
}
@NonNull
@Override
public Object instantiateItem(@NonNull ViewGroup container, int position) {
//创建imageview
ImageView imageView = new ImageView(mContext);
//设置可拉伸
imageView.setScaleType(ImageView.ScaleType.FIT_XY);
//将imageview设置给ViewGroup
container.addView(imageView);
//设置图片
ImageLoader.getInstance().displayImage(mData.get(position%mData.size()).getIconNoHttps(),imageView);
return imageView;
}
@Override
public void destroyItem(@NonNull ViewGroup container, int position, @NonNull Object object) {
//删除
container.removeView((View) object);
}
}
4.新闻Bean
package com.example.bean;
import java.util.List;
public class NewsBean {
private List<ResultBean> result;
public List<ResultBean> getResult() {
return result;
}
public void setResult(List<ResultBean> result) {
this.result = result;
}
public static class ResultBean {
private boolean followMovie;
private int id;
private String imageUrl;
private String name;
private int rank;
private String summary;
public boolean isFollowMovie() {
return followMovie;
}
public void setFollowMovie(boolean followMovie) {
this.followMovie = followMovie;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getImageUrl() {
return imageUrl;
}
public void setImageUrl(String imageUrl) {
this.imageUrl = imageUrl;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getRank() {
return rank;
}
public void setRank(int rank) {
this.rank = rank;
}
public String getSummary() {
return summary;
}
public void setSummary(String summary) {
this.summary = summary;
}
}
}
5.轮播图Bean
package com.example.bean;
import java.util.List;
public class BunnerBean {
private List<DataBean> data;
public List<DataBean> getData() {
return data;
}
public void setData(List<DataBean> data) {
this.data = data;
}
public static class DataBean {
private int aid;
private String createtime;
private String icon;
private Object productId;
private String title;
private int type;
private String url;
public int getAid() {
return aid;
}
public void setAid(int aid) {
this.aid = aid;
}
public String getCreatetime() {
return createtime;
}
public void setCreatetime(String createtime) {
this.createtime = createtime;
}
public String getIcon() {
return icon;
}
public void setIcon(String icon) {
this.icon = icon;
}
public String getIconNoHttps(){
return icon.replace("https","http");
}
public Object getProductId() {
return productId;
}
public void setProductId(Object productId) {
this.productId = productId;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public int getType() {
return type;
}
public void setType(int type) {
this.type = type;
}
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
}
}
6.工具类
package com.example.Util;
import android.annotation.SuppressLint;
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.AsyncTask;
import com.google.gson.Gson;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
public class NetUtil {
private static NetUtil instance;
private Gson gson;
//私有构造
private NetUtil(){
gson = new Gson();
}
//定义方法,获取对象
public static NetUtil getInstance() {
if(instance == null){
instance = new NetUtil();
}
return instance;
}
//执行一个网络请求 返回string
public String getResult(String urlStr){
String result = "";
try {
//定义url地址
URL url = new URL(urlStr);
//打开连接
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
//设置超时
urlConnection.setConnectTimeout(5000);
urlConnection.setReadTimeout(5000);
//获取请求码
int responseCode = urlConnection.getResponseCode();
if(responseCode == 200){
result = stream2String(urlConnection.getInputStream());
}
} catch (Exception e) {
e.printStackTrace();
}
return result;
}
//将字节流转换为字符流
private String stream2String(InputStream inputStream) throws IOException {
StringBuilder builder = new StringBuilder();
BufferedReader br = new BufferedReader(new InputStreamReader(inputStream));
for (String tmp = br.readLine();tmp!=null;tmp=br.readLine()){
builder.append(tmp);
}
return builder.toString();
}
//解析json返回Bean
public <E> E getResult(String urlStr,Class clazz){
String result = getResult(urlStr);
E e = (E) gson.fromJson(result,clazz);
return e;
}
//定义一个接口
public interface CallBack<E>{
void onSuccess(E e);
}
//回调调用
@SuppressLint("StaticFieldLeak")
public void getResult(String urlStr, final Class clazz, final CallBack callBack){
new AsyncTask<String,Void,Object>(){
@Override
protected Object doInBackground(String... strings) {
return getResult(strings[0],clazz);
}
@Override
protected void onPostExecute(Object o) {
callBack.onSuccess(o);
}
}.execute(urlStr);
}
//判断网络是否可用
public boolean hasNetWork(Context context){
ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo activeNetworkInfo = cm.getActiveNetworkInfo();
return activeNetworkInfo!=null&&activeNetworkInfo.isAvailable();
}
}
7.Application初始化图片
package com.example;
import android.app.Application;
import android.graphics.Bitmap;
import com.example.week2_01.R;
import com.nostra13.universalimageloader.core.DisplayImageOptions;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;
import com.nostra13.universalimageloader.core.display.RoundedBitmapDisplayer;
public class App extends Application {
@Override
public void onCreate() {
super.onCreate();
ImageLoader.getInstance().init(new ImageLoaderConfiguration.Builder(this)
//指sdcard的缓存大小
.diskCacheSize(50*1204*1204)
//设置内存缓存数量
.memoryCacheSizePercentage(13)
//设置图片格式
.defaultDisplayImageOptions(new DisplayImageOptions.Builder()
//启用外存缓存
.cacheOnDisk(true)
//启用内存缓存
.cacheInMemory(true)
//设置色彩模式
.bitmapConfig(Bitmap.Config.ARGB_4444)
//设置图片Uri为空或是错误的时候显示的图片
.showImageForEmptyUri(R.mipmap.ic_launcher)
//设置图片加载/解码过程中错误时候显示的图片
.showImageOnFail(R.mipmap.ic_launcher)
//设置图片在下载期间显示的图片
.showImageOnLoading(R.mipmap.ic_launcher)
//设置图片格式
.displayer(new RoundedBitmapDisplayer(16))
.build())
.build());
}
}
8.跳转展示详情的Activity
package com.example.week2_01;
import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.widget.TextView;
public class LoginActivity extends AppCompatActivity {
private TextView name;
private TextView summary;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
//获取资源id
name = findViewById(R.id.text_name);
summary = findViewById(R.id.text_summary);
//接收值
Intent intent = getIntent();
name.setText(intent.getStringExtra("name"));
summary.setText(intent.getStringExtra("summary"));
}
}
9AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.week2_01">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<application
android:name="com.example.App"
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".LoginActivity"/>
</application>
</manifest>