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我正在創建一個包含RSS提要的Android應用程序。目前，我已經編寫了應用程序以從一個xml提要中獲取數據，並顯示我的想法。但是，我不確定如何將多個XML feed添加到我的程序中。我希望該應用顯示來自多個Feed /鏈接的數據。我目前直接從網址提取我的單一Feed。如何將多個Feed添加到RSS feed android應用程序中？
我是Java編程和Android Studio的初學者，所以這可能是我無法弄清楚的原因！有人建議一個txt文件來保存所有的提要鏈接，但我不知道我會如何編碼。
如果您還需要下面的文件，請告訴我。我想我已經包含了相關的文件。
爲了成爲nooby道歉，任何幫助將大規模讚賞！
ReadRSS.java：
package com.example.liutaurasmazonas.cslogintrying;
import android.app.ProgressDialog;
import android.content.Context;
import android.os.AsyncTask;
import android.provider.DocumentsContract;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import static android.R.attr.data;
/**
* Created by Joe on 04/03/2017.
*/
public class ReadRss extends AsyncTask<Void,Void,Void>{
ArrayList<FeedItem>feedItems;
RecyclerView recyclerView;
Context context;
String address="https://www.bloomberg.com/feeds/podcasts/etf_report.xml";
ProgressDialog progressDialog;
URL url;
public ReadRss(Context context, RecyclerView recyclerView){
this.recyclerView=recyclerView;
this.context=context;
progressDialog=new ProgressDialog(context);
progressDialog.setMessage("Loading...");
}
@Override
protected void onPreExecute() {
progressDialog.show();
super.onPreExecute();
}
@Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
progressDialog.dismiss();
MyAdapter adapter=new MyAdapter(context,feedItems);
recyclerView.setLayoutManager(new LinearLayoutManager(context));
recyclerView.addItemDecoration(new VerticalSpace(50));
recyclerView.setAdapter(adapter);
}
@Override
protected Void doInBackground(Void... params) {
ProcessXml(Getdata());
return null;
}
private void ProcessXml(Document data) {
if (data != null){
feedItems=new ArrayList<>();
Element root=data.getDocumentElement();
Node channel=root.getChildNodes().item(0);
NodeList items=channel.getChildNodes();
for (int i=0;i<items.getLength();i++){
Node currentchild=items.item(i);
if (currentchild.getNodeName().equalsIgnoreCase("item")){
FeedItem item=new FeedItem();
NodeList itemchilds=currentchild.getChildNodes();
for (int j=0;j<itemchilds.getLength();j++){
Node current=itemchilds.item(j);
if (current.getNodeName().equalsIgnoreCase("title")){
item.setTitle(current.getTextContent());
}else if (current.getNodeName().equalsIgnoreCase("itunes:summary")){
item.setDescription(current.getTextContent());
}else if (current.getNodeName().equalsIgnoreCase("pubDate")){
item.setPubDate(current.getTextContent());
}else if (current.getNodeName().equalsIgnoreCase("link")){
item.setLink(current.getTextContent());
}
}
feedItems.add(item);
// Log.d("itemTitle", item.getTitle());
// Log.d("itemDescription", item.getTitle());
// Log.d("itemLink", item.getTitle());
// Log.d("itemPubDate", item.getTitle());
}
}
}
}
public Document Getdata(){
try {
url=new URL(address);
HttpURLConnection connection= (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");
InputStream inputStream=connection.getInputStream();
DocumentBuilderFactory builderFactory=DocumentBuilderFactory.newInstance();
DocumentBuilder builder=builderFactory.newDocumentBuilder();
Document xmlDoc = builder.parse(inputStream);
return xmlDoc;
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
}
MyAdapter.java
package com.example.liutaurasmazonas.cslogintrying;
import android.content.Context;
import android.content.Intent;
import android.support.v7.widget.CardView;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import com.daimajia.androidanimations.library.Techniques;
import com.daimajia.androidanimations.library.YoYo;
import org.w3c.dom.Text;
import java.util.ArrayList;
/**
* Created by Joe on 05/03/2017.
*/
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder>{
ArrayList<FeedItem>feedItems;
Context context;
public MyAdapter(Context context,ArrayList<FeedItem>feedItems){
this.feedItems=feedItems;
this.context=context;
}
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view= LayoutInflater.from(context).inflate(R.layout.custum_row_news_item,parent,false);
MyViewHolder holder=new MyViewHolder(view);
return holder;
}
@Override
public void onBindViewHolder(MyViewHolder holder, int position) {
YoYo.with(Techniques.FadeIn).playOn(holder.cardView);
final FeedItem current=feedItems.get(position);
holder.Title.setText(current.getTitle());
holder.Description.setText(current.getDescription());
holder.Date.setText(current.getPubDate());
holder.cardView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(context, NewsDetails.class);
intent.putExtra("Link", current.getLink());
context.startActivity(intent);
}
});
}
@Override
public int getItemCount() {
return feedItems.size();
}
public class MyViewHolder extends RecyclerView.ViewHolder {
TextView Title,Description,Date;
CardView cardView;
public MyViewHolder(View itemView) {
super(itemView);
Title= (TextView) itemView.findViewById(R.id.title_text);
Description=(TextView) itemView.findViewById(R.id.description_text);
Date=(TextView) itemView.findViewById(R.id.date_text);
cardView= (CardView) itemView.findViewById(R.id.cardview);
}
}
}
你可以發佈其他鏈接，你想提取飼料？ –