création d'une listview dynamique
Salut,
J'ai une ListView, que je remplis dynamiquement avec des valeurs que je récupères d'une fichier xml, que j'ai déjà 'parser' avec les données de type string. Ça marche bien, mais mon problème avec le widget ratingbar et qu'il n'affiche rien.
Pour information, je suis débutant en android
voilà mon fichier Xml à parser
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| <results count="3">
<result>
<vote>1</vote>
<nom>mahdi</nom>
<score>234</score>
</result>
<result>
<vote>2</id>
<nom>aaaaa</nom>
<score>2343</score>
<vote>4</id>
<nom>bbbbb</nom>
<score>2343</score>
</result> |
voila mes layoutes
listeplacerholde.xml
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| <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ListView
android:id="@id/android:list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:drawSelectorOnTop="false" />
<TextView
android:id="@id/android:empty"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="No data"/>
</LinearLayout> |
main.xml
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| <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/i"
android:layout_width="216dp"
android:layout_height="123dp"
android:orientation="vertical"
android:paddingLeft="10dip" >
<TextView
android:id="@+id/item_title"
android:layout_width="160dp"
android:layout_height="wrap_content"
android:padding="2dp"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textSize="20dp" />
<TextView
android:id="@+id/item_subtitle"
android:layout_width="157dp"
android:layout_height="wrap_content"
android:padding="2dp"
android:textSize="13dp" />
<TextView
android:id="@+id/item_su"
android:layout_width="158dp"
android:layout_height="wrap_content"
android:padding="2dp"
android:textSize="13dp" />
<RatingBar
android:id="@+id/rating"
style="?android:attr/ratingBarStyleSmall"
android:layout_width="180dp"
android:layout_height="wrap_content"
android:numStars="5"
android:stepSize="1" />
</LinearLayout>
</LinearLayout> |
Main.java
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| package com.test.aa;
import java.util.ArrayList;
import java.util.HashMap;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import android.app.ListActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.RatingBar;
import android.widget.SimpleAdapter;
import android.widget.Toast;
public class Main extends ListActivity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.listplaceholder);
ArrayList<HashMap<String, String>> mylist = new ArrayList<HashMap<String, String>>();
String xml = XMLfunctions.getXML();
Document doc = XMLfunctions.XMLfromString(xml);
int numResults = XMLfunctions.numResults(doc);
if((numResults <= 0)){
Toast.makeText(Main.this, "pas de resultas", Toast.LENGTH_LONG).show();
finish();
}
NodeList nodes = doc.getElementsByTagName("result");
for (int i = 0; i < nodes.getLength(); i++) {
HashMap<String, String> map = new HashMap<String, String>();
Element e = (Element)nodes.item(i);
map.put("vote", XMLfunctions.getValue(e, "vote"));
map.put("name", "nom:" + XMLfunctions.getValue(e, "nom"));
map.put("Score", "Score: " + XMLfunctions.getValue(e, "score"));
mylist.add(map);
}
ListAdapter adapter = new SimpleAdapter(this,mylist,R.layout.main,
new String[] {"name","Score"},
new int[] { R.id.item_title, R.id.item_subtitle});
RatingBar stars=(RatingBar) findViewById(R.id.rating);
stars.setNumStars(5);
stars.setRating("id");/* au niveau de ce ligne eclipse m'afficher erreur suivante"the methode setrating(float) in the type ratingbar is not applicable for argument (string)**/
setListAdapter(adapter);
}
} |
XMLfunction.java
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| package com.test.aa;
import java.io.IOException;
import java.io.StringReader;
import java.io.UnsupportedEncodingException;
import java.net.MalformedURLException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
public class XMLfunctions {
public final static Document XMLfromString(String xml){
Document doc = null;
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
try {
DocumentBuilder db = dbf.newDocumentBuilder();
InputSource is = new InputSource();
is.setCharacterStream(new StringReader(xml));
doc = db.parse(is);
} catch (ParserConfigurationException e) {
System.out.println("XML parse error: " + e.getMessage());
return null;
} catch (SAXException e) {
System.out.println("Wrong XML file structure: " + e.getMessage());
return null;
} catch (IOException e) {
System.out.println("I/O exeption: " + e.getMessage());
return null;
}
return doc;
}
/** Returns element value
* @param elem element (it is XML tag)
* @return Element value otherwise empty String
*/
public final static String getElementValue( Node elem ) {
Node kid;
if( elem != null){
if (elem.hasChildNodes()){
for( kid = elem.getFirstChild(); kid != null; kid = kid.getNextSibling() ){
if( kid.getNodeType() == Node.TEXT_NODE ){
return kid.getNodeValue();
}
}
}
}
return "";
}
public static String getXML(){
String line = null;
try {
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost("http://testandroid.hebergratuit.com/bb.xml");
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
line = EntityUtils.toString(httpEntity);
} catch (UnsupportedEncodingException e) {
line = "<results status=\"error\"><msg>Can't connect to server</msg></results>";
} catch (MalformedURLException e) {
line = "<results status=\"error\"><msg>Can't connect to server</msg></results>";
} catch (IOException e) {
line = "<results status=\"error\"><msg>Can't connect to server</msg></results>";
}
return line;
}
public static int numResults(Document doc){
Node results = doc.getDocumentElement();
int res = -1;
try{
res = Integer.valueOf(results.getAttributes().getNamedItem("count").getNodeValue());
}catch(Exception e ){
res = -1;
}
return res;
}
public static String getValue(Element item, String str) {
NodeList n = item.getElementsByTagName(str);
return XMLfunctions.getElementValue(n.item(0));
}
} |
Merci
Personnellement j’implémenterai un ArrayAdapter<T> histoire d'avoir plus de liberté.
salut
merci UbentuMan pour votre réponse,alors il faut que je remplacer le SimpleAdapter par arrayadapter
j'ai essaie de faire les modification suivantes mais encore pas de résultas mem je ne sais pas comment ajouter le widget ratingbar pour le arrayadapter
Mercii;).
je sais que je fait des fautes débiles :oops: mais je suis encore débutant
main.java
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|
package com.test.aa;
import java.util.ArrayList;
import java.util.HashMap;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import android.app.ListActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.RatingBar;
import android.widget.SimpleAdapter;
import android.widget.Toast;
public class Main extends ListActivity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.listplaceholder);
ArrayList<HashMap<String, String>> mylist = new ArrayList<HashMap<String, String>>();
String xml = XMLfunctions.getXML();
Document doc = XMLfunctions.XMLfromString(xml);
int numResults = XMLfunctions.numResults(doc);
if((numResults <= 0)){
Toast.makeText(Main.this, "pas de resultas", Toast.LENGTH_LONG).show();
finish();
}
NodeList nodes = doc.getElementsByTagName("result");
for (int i = 0; i < nodes.getLength(); i++) {
HashMap<String, String> map = new HashMap<String, String>();
Element e = (Element)nodes.item(i);
map.put("vote", XMLfunctions.getValue(e, "vote"));
map.put("name", "nom:" + XMLfunctions.getValue(e, "nom"));
map.put("Score", "Score: " + XMLfunctions.getValue(e, "score"));
mylist.add(map);
}
setListAdapter(new ArrayAdapter(this, mylist
R.layout.main new String[] {"name","Score"},
new int[] { R.id.item_title, R.id.item_subtitle});
// Listeadapter adapter = simpleadapter(this,mylist,R.layout.main,
//new String[] {"name","Score"},
// new int[] { R.id.item_title, R.id.item_subtitle});
// RatingBar stars=(RatingBar) findViewById(R.id.rating);
//stars.setNumStars(5);
// stars.setRating("id");/* au niveau de ce ligne eclipse m'afficher erreur suivante"the methode setrating(float) in the type ratingbar is not applicable for argument (string)**/
setListAdapter(adapter); |
