多條目一，上拉下拉+
阿新 • • 發佈：2018-11-19
//MainActivity
package com.example.day08_test02; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import com.example.day08_test02.Adapter.MyAdapter; import com.example.day08_test02.Bean.MyimagerBean; import com.example.day08_test02.Bean.MynewsBean; import com.example.day08_test02.Utils.Utils; import java.util.List; import me.maxwin.view.XListView; public class MainActivity extends AppCompatActivity { private int mPger=1; private MyAdapter adapter; private XListView xListView; private final int LOAD_COUNT = 10; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); findViewById(R.id.pager); xListView = findViewById(R.id.xlist); //設定可擴充套件屬性 xListView.setPullRefreshEnable(true); xListView.setPullLoadEnable(true); adapter = new MyAdapter(this); xListView.setAdapter(adapter); //設定監聽 xListView.setXListViewListener(new XListView.IXListViewListener() { @Override public void onRefresh() { //賦值頁面 mPger=1; loadData(); } @Override public void onLoadMore() { mPger++; loadData(); } }); loadNews(); loadImage(); } //載入資料 private void loadData() { //判斷頁面 if(mPger==1){ //載入新聞 載入圖片 loadImage(); loadNews(); }else{ loadNews(); } } //新聞的實現方法 private String urlStr="http://172.17.8.100/movieApi/movie/v1/findHotMovieList?count=%d&page=%d"; private void loadNews() { Utils.getInstance().getRequest03(String.format(urlStr,LOAD_COUNT,mPger),MynewsBean.class, new Utils.CallBack<MynewsBean>() { @Override public void onSuccess(MynewsBean mynewsBean) { //呼叫瞭解析新聞的回撥方法得到回撥值 List<MynewsBean.Result> result = mynewsBean.getResult(); //得到新聞的頁面判斷是重新整理還是載入 if(mPger==1){ //重新整理 adapter.setDatas(result); }else{ //載入 adapter.addDatas(result); } //停止 xListView.stopRefresh(); xListView.stopLoadMore(); //判斷 if(result.size()<LOAD_COUNT){ //如果載入之後沒了 就不顯示 上拉載入了 xListView.setPullLoadEnable(false); } } }); } //圖片的實現方法 private String imagerStr="http://www.zhaoapi.cn/quarter/getAd"; private void loadImage() { Utils.getInstance().getRequest03(imagerStr, MyimagerBean.class, new Utils.CallBack<MyimagerBean>() { @Override public void onSuccess(MyimagerBean myimagerBean) { List<MyimagerBean.Data> data = myimagerBean.getData(); adapter.setImage(data); } }); } }
//App 全域性配置
package com.example.day08_test02; import android.app.Application; import android.graphics.Bitmap; 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 { //一定主義在清單檔案配置 @Override public void onCreate() { super.onCreate(); //開局初始化imageloder ImageLoader.getInstance().init( //裡面例項化 imageloader全域性配置 new ImageLoaderConfiguration.Builder(this) //設定緩衝的大小 .diskCacheSize(50*1024*1024) //設定色彩模式 .defaultDisplayImageOptions( //例項化色彩模式的 new DisplayImageOptions.Builder() //是否緩衝 .cacheInMemory(true) //磁碟緩衝 .cacheOnDisk(true) //設定圖片的格式 .bitmapConfig(Bitmap.Config.ARGB_4444) .showImageOnLoading(R.mipmap.ic_launcher) .showImageOnFail(R.mipmap.ic_launcher) .showImageForEmptyUri(R.mipmap.ic_launcher) //設定圖片的樣式 .displayer( new RoundedBitmapDisplayer(16) ) .build() ) .build() ); } }
//Utils 封裝Async 介面解析
package com.example.day08_test02.Utils; import android.annotation.SuppressLint; 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.MalformedURLException; import java.net.ProtocolException; import java.net.URL; public class Utils { //定義單例變數 private static Utils instance; private Gson gson; //構造 private Utils(){ gson = new Gson(); } //賦值 public static Utils getInstance(){ //判斷 if(instance==null){ instance = new Utils(); } return instance; } //定義介面 public interface CallBack<T>{ void onSuccess(T t); } //定義帶介面的方法 @SuppressLint("StaticFieldLeak") public void getRequest03(String UrlStr, final Class clazz, final CallBack callBack){ new AsyncTask<String, Void, Object>() { @Override protected Object doInBackground(String... strings) { return getRequest02(strings[0],clazz); } @Override protected void onPostExecute(Object o) { callBack.onSuccess(o); } }.execute(UrlStr); } //定義個封裝class的類 掉01，並解析 public <T> T getRequest02(String UrlStr,Class clazz){ return (T) gson.fromJson(getRequest01(UrlStr),clazz); } //定義得到一個string public String getRequest01(String urlStr){ String result = ""; URL url = null; try { url = new URL(urlStr); HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection(); urlConnection.setRequestMethod("GET"); // urlConnection.setConnectTimeout(5000); urlConnection.setReadTimeout(5000); int responseCode = urlConnection.getResponseCode(); if(responseCode == 200) { result = stream2String(urlConnection.getInputStream()); } } catch (MalformedURLException e) { e.printStackTrace(); } catch (ProtocolException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return result; } private String stream2String(InputStream is) throws IOException { StringBuilder sb = new StringBuilder(); BufferedReader br = new BufferedReader(new InputStreamReader(is)); for (String tmp = br.readLine(); tmp != null ; tmp = br.readLine()) { sb.append(tmp); } return sb.toString(); } }
//MAinAdapter 主要條目佈局
package com.example.day08_test02.Adapter;
import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.Bitmap;
import android.os.Message;
import android.support.v4.view.ViewPager;
import android.util.Log;
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.day08_test02.Bean.MyimagerBean;
import com.example.day08_test02.Bean.MynewsBean;
import com.example.day08_test02.R;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.assist.FailReason;
import com.nostra13.universalimageloader.core.listener.ImageLoadingListener;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Handler;
public class MyAdapter extends BaseAdapter {
//定義三個值 一個 代表條目總數
private final int ITEM_COUNT = 2;
private final int IMAGE_TYPE = 0;
private final int NEWS_TYPE = 1;
//
private Context context;
private List<MynewsBean.Result> News_list;
private List<MyimagerBean.Data> Image_List;
//初始化的東西
public MyAdapter(Context context) {
this.context = context;
News_list = new ArrayList<>();
Image_List = new ArrayList<>();
}
//003更新圖片
public void setImage(List<MyimagerBean.Data> images){
//先清空
Image_List.clear();
//在判斷
if(images!=null){
//在新增
Image_List.addAll(images);
}
notifyDataSetChanged();
}
//002更新的新聞資料
public void setDatas(List<MynewsBean.Result> lists){
if(lists!=null){
News_list.clear();
News_list.addAll(lists);
}
notifyDataSetChanged();
}
//001追加的新聞資料
public void addDatas(List<MynewsBean.Result> lists){
//判斷傳過來的資料不是空
if(lists!=null){
//讓news + 進去
News_list.addAll(lists);
}
notifyDataSetChanged();
}
//判斷載入沒載入圖片
private Boolean hasImage(){
return Image_List.size()>0;
}
//得到試圖 的數量 也就是載入幾種條目數
// 手寫方法01
@Override
public int getViewTypeCount() {
return ITEM_COUNT;
}
//得到試圖的型別
// 手寫方法 02
@Override
public int getItemViewType(int position) {
//如果載入了圖片就從1開始 沒有就從0開始
//因為總試圖是兩個 載入了圖片才能從0-2，但是沒載入圖片所以是1-2
return position==0&hasImage() ?IMAGE_TYPE:NEWS_TYPE;
}
//01
//這裡展示的是新聞的總條目
@Override
public int getCount() {
//如果不展示另一個 就是
//return News_list.size();
//但是現在不是 判斷第一個加載出來沒有
//加載出來下標就+1 沒有就原位置
return hasImage() ? News_list.size()+1:News_list.size();
}
//02
//這裡展示的是新聞的東西
@Override
public MynewsBean.Result getItem(int position) {
//判斷圖片載入與否
return News_list.get(hasImage()?position-1:position);
}
//03
@Override
public long getItemId(int position) {
return position;
}
//04
@Override
public View getView(int position, View convertView, ViewGroup parent) {
//開局判斷 是 新聞還是圖片
if(getItemViewType(position)==NEWS_TYPE){
NewsViewHolder viewHolder;
if(convertView==null){
//載入試圖
convertView = LayoutInflater.from(context).inflate(R.layout.news_list,parent,false);
//例項化暫存器
viewHolder = new NewsViewHolder(convertView);
}else{
viewHolder = (NewsViewHolder) convertView.getTag();
}
//呼叫 暫存器裡面的方法
viewHolder.bindData(getItem(position));
}else{
//圖片寄存
ImagerViewHolder imagerViewHolder;
if(convertView==null){
convertView =LayoutInflater.from(context).inflate(R.layout.image_list, parent, false);
imagerViewHolder = new ImagerViewHolder(convertView);
}else{
imagerViewHolder = (ImagerViewHolder) convertView.getTag();
}
//呼叫方法 因為圖片輪播的是在這裡進行
imagerViewHolder.bindData(context,Image_List);
}
return convertView;
}
//新聞的暫存器
class NewsViewHolder{
ImageView icon;
TextView summary;
TextView name;
//為自己構造有參 引數為試圖 用來findById
public NewsViewHolder(View view){
icon = view.findViewById(R.id.image01);
name = view.findViewById(R.id.name01);
summary = view.findViewById(R.id.title01);
//settag
view.setTag(this);
}
//賦值的方法 例項化本類 可以調這個方法 用來賦值
public void bindData(MynewsBean.Result item) {
name.setText(item.getName());
summary.setText(item.getSummary());
//用ImageLoader來載入圖片
ImageLoader.getInstance().displayImage(item.getImageUrl(), icon);
}
}
//圖片的暫存器
class ImagerViewHolder{
//載入ViewPager
ViewPager viewPager;
//handler
@SuppressLint("HandlerLeak")
private android.os.Handler handler = new android.os.Handler(){
@Override
public void handleMessage(Message msg) {
viewPager.setCurrentItem(viewPager.getCurrentItem()+1);
handler.sendEmptyMessageDelayed(0,2000);
}
};
//findByid
public ImagerViewHolder(View view){
viewPager = view.findViewById(R.id.pager);
view.setTag(this);
}
//賦值
public void bindData(Context context, List<MyimagerBean.Data> image){
//清空所有任務資訊
handler.removeCallbacksAndMessages(null);
//設定介面卡
viewPager.setAdapter(new MyimageAdapter(image,context));
viewPager.setCurrentItem(viewPager.getAdapter().getCount()/2);
handler.sendEmptyMessageDelayed(0,2000);
}
}
}
// PagerApater
package com.example.day08_test02.Adapter;
import android.content.Context;
import android.support.annotation.NonNull;
import android.support.v4.view.PagerAdapter;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import com.example.day08_test02.Bean.MyimagerBean;
import com.nostra13.universalimageloader.core.ImageLoader;
import java.util.Date;
import java.util.List;
public class MyimageAdapter extends PagerAdapter {
private List<MyimagerBean.Data> list;
private Context context;
public MyimageAdapter(List<MyimagerBean.Data> list, Context context) {
this.list = list;
this.context = context;
}
@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) {
ImageView imageView = new ImageView(context);
imageView.setScaleType(ImageView.ScaleType.FIT_CENTER);
container.addView(imageView);
Log.i("TAG",list.size()+"");
ImageLoader.getInstance().displayImage(list.get(position%list.size()).getUrlNoHttps(),imageView);
return imageView;
}
@Override
public void destroyItem(@NonNull ViewGroup container, int position, @NonNull Object object) {
container.removeView((View) object);
}
}