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POCan't Get XML Data to ListView
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  1. POCan't Get XML Data to ListView
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    copied!<p>I found an example about <code>XML</code> and <code>ListView</code> project from Internet and I only change xml link and tag names in updated project. Application is working correctly but is it saying on main screen "<em>No Data</em>"</p> <p><img src="https://i.stack.imgur.com/K9OhO.jpg" alt="enter image description here"></p> <p>Original project is <a href="http://p-xr.com/android-tutorial-how-to-parseread-xml-data-into-android-listview/" rel="nofollow noreferrer"><strong>here</strong></a></p> <p>Edited project is this:</p> <h2>Main.java</h2> <pre><code>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&lt;HashMap&lt;String, String&gt;&gt; mylist = new ArrayList&lt;HashMap&lt;String, String&gt;&gt;(); String xml = XMLfunctions.getXML(); Document doc = XMLfunctions.XMLfromString(xml); /* int numResults = XMLfunctions.numResults(doc); if((numResults &lt;= 0)){ Toast.makeText(Main.this, "Geen resultaten gevonden", Toast.LENGTH_LONG).show(); finish(); } */ NodeList nodes = doc.getElementsByTagName("note"); for (int i = 0; i &lt; nodes.getLength(); i++) { HashMap&lt;String, String&gt; map = new HashMap&lt;String, String&gt;(); Element e = (Element)nodes.item(i); ///////I EDITED THESE TAGS//////////////////// map.put("to",XMLfunctions.getValue(e, "to")); map.put("from", "From:" + XMLfunctions.getValue(e, "from")); mylist.add(map); } ListAdapter adapter = new SimpleAdapter(this, mylist , R.layout.main, new String[] { "to", "from" }, new int[] { R.id.item_title, R.id.item_subtitle }); setListAdapter(adapter); final ListView lv = getListView(); lv.setTextFilterEnabled(true); /* lv.setOnItemClickListener(new OnItemClickListener() { public void onItemClick(AdapterView&lt;?&gt; parent, View view, int position, long id) { @SuppressWarnings("unchecked") HashMap&lt;String, String&gt; o = (HashMap&lt;String, String&gt;) lv.getItemAtPosition(position); Toast.makeText(Main.this, "ID '" + o.get("id") + "' was clicked.", Toast.LENGTH_LONG).show(); } }); */ } } </code></pre> <h2>XMLfunctions.java</h2> <pre><code>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(); ///////I EDITED THIS LINK//////////////////// HttpPost httpPost = new HttpPost("http://www.w3schools.com/xml/note.xml"); HttpResponse httpResponse = httpClient.execute(httpPost); HttpEntity httpEntity = httpResponse.getEntity(); line = EntityUtils.toString(httpEntity); } catch (UnsupportedEncodingException e) { line = "&lt;results status=\"error\"&gt;&lt;msg&gt;Can't connect to server&lt;/msg&gt;&lt;/results&gt;"; } catch (MalformedURLException e) { line = "&lt;results status=\"error\"&gt;&lt;msg&gt;Can't connect to server&lt;/msg&gt;&lt;/results&gt;"; } catch (IOException e) { line = "&lt;results status=\"error\"&gt;&lt;msg&gt;Can't connect to server&lt;/msg&gt;&lt;/results&gt;"; } 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)); } } </code></pre> <hr> <h2>LogCat</h2> <pre><code>03-16 00:53:05.032: E/SurfaceFlinger(36): ro.sf.lcd_density must be defined as a build property 03-16 00:53:12.401: E/SurfaceFlinger(36): ro.sf.lcd_density must be defined as a build property 03-16 00:53:12.711: E/Trace(1902): error opening trace file: No such file or directory (2) 03-16 00:53:15.351: E/SurfaceFlinger(36): ro.sf.lcd_density must be defined as a build property 03-16 00:53:39.282: E/SurfaceFlinger(36): ro.sf.lcd_density must be defined as a build property 03-16 00:53:40.640: E/ActivityThread(875): Service com.android.exchange.ExchangeService has leaked ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@40d5f200 that was originally bound here 03-16 00:53:40.640: E/ActivityThread(875): android.app.ServiceConnectionLeaked: Service com.android.exchange.ExchangeService has leaked ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@40d5f200 that was originally bound here 03-16 00:53:40.640: E/ActivityThread(875): at android.app.LoadedApk$ServiceDispatcher.&lt;init&gt;(LoadedApk.java:969) 03-16 00:53:40.640: E/ActivityThread(875): at android.app.LoadedApk.getServiceDispatcher(LoadedApk.java:863) 03-16 00:53:40.640: E/ActivityThread(875): at android.app.ContextImpl.bindService(ContextImpl.java:1418) 03-16 00:53:40.640: E/ActivityThread(875): at android.app.ContextImpl.bindService(ContextImpl.java:1407) 03-16 00:53:40.640: E/ActivityThread(875): at android.content.ContextWrapper.bindService(ContextWrapper.java:473) 03-16 00:53:40.640: E/ActivityThread(875): at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:157) 03-16 00:53:40.640: E/ActivityThread(875): at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:145) 03-16 00:53:40.640: E/ActivityThread(875): at com.android.emailcommon.service.ServiceProxy.test(ServiceProxy.java:191) 03-16 00:53:40.640: E/ActivityThread(875): at com.android.exchange.ExchangeService$7.run(ExchangeService.java:1850) 03-16 00:53:40.640: E/ActivityThread(875): at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:551) 03-16 00:53:40.640: E/ActivityThread(875): at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:549) 03-16 00:53:40.640: E/ActivityThread(875): at android.os.AsyncTask$2.call(AsyncTask.java:287) 03-16 00:53:40.640: E/ActivityThread(875): at java.util.concurrent.FutureTask.run(FutureTask.java:234) 03-16 00:53:40.640: E/ActivityThread(875): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080) 03-16 00:53:40.640: E/ActivityThread(875): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573) 03-16 00:53:40.640: E/ActivityThread(875): at java.lang.Thread.run(Thread.java:856) 03-16 00:53:40.652: E/StrictMode(875): null 03-16 00:53:40.652: E/StrictMode(875): android.app.ServiceConnectionLeaked: Service com.android.exchange.ExchangeService has leaked ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@40d5f200 that was originally bound here 03-16 00:53:40.652: E/StrictMode(875): at android.app.LoadedApk$ServiceDispatcher.&lt;init&gt;(LoadedApk.java:969) 03-16 00:53:40.652: E/StrictMode(875): at android.app.LoadedApk.getServiceDispatcher(LoadedApk.java:863) 03-16 00:53:40.652: E/StrictMode(875): at android.app.ContextImpl.bindService(ContextImpl.java:1418) 03-16 00:53:40.652: E/StrictMode(875): at android.app.ContextImpl.bindService(ContextImpl.java:1407) 03-16 00:53:40.652: E/StrictMode(875): at android.content.ContextWrapper.bindService(ContextWrapper.java:473) 03-16 00:53:40.652: E/StrictMode(875): at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:157) 03-16 00:53:40.652: E/StrictMode(875): at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:145) 03-16 00:53:40.652: E/StrictMode(875): at com.android.emailcommon.service.ServiceProxy.test(ServiceProxy.java:191) 03-16 00:53:40.652: E/StrictMode(875): at com.android.exchange.ExchangeService$7.run(ExchangeService.java:1850) 03-16 00:53:40.652: E/StrictMode(875): at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:551) 03-16 00:53:40.652: E/StrictMode(875): at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:549) 03-16 00:53:40.652: E/StrictMode(875): at android.os.AsyncTask$2.call(AsyncTask.java:287) 03-16 00:53:40.652: E/StrictMode(875): at java.util.concurrent.FutureTask.run(FutureTask.java:234) 03-16 00:53:40.652: E/StrictMode(875): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080) 03-16 00:53:40.652: E/StrictMode(875): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573) 03-16 00:53:40.652: E/StrictMode(875): at java.lang.Thread.run(Thread.java:856) 03-16 00:53:40.981: E/ActivityThread(875): Service com.android.exchange.ExchangeService has leaked ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@40d5f790 that was originally bound here 03-16 00:53:40.981: E/ActivityThread(875): android.app.ServiceConnectionLeaked: Service com.android.exchange.ExchangeService has leaked ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@40d5f790 that was originally bound here 03-16 00:53:40.981: E/ActivityThread(875): at android.app.LoadedApk$ServiceDispatcher.&lt;init&gt;(LoadedApk.java:969) 03-16 00:53:40.981: E/ActivityThread(875): at android.app.LoadedApk.getServiceDispatcher(LoadedApk.java:863) 03-16 00:53:40.981: E/ActivityThread(875): at android.app.ContextImpl.bindService(ContextImpl.java:1418) 03-16 00:53:40.981: E/ActivityThread(875): at android.app.ContextImpl.bindService(ContextImpl.java:1407) 03-16 00:53:40.981: E/ActivityThread(875): at android.content.ContextWrapper.bindService(ContextWrapper.java:473) 03-16 00:53:40.981: E/ActivityThread(875): at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:157) 03-16 00:53:40.981: E/ActivityThread(875): at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:145) 03-16 00:53:40.981: E/ActivityThread(875): at com.android.emailcommon.service.AccountServiceProxy.getDeviceId(AccountServiceProxy.java:116) 03-16 00:53:40.981: E/ActivityThread(875): at com.android.exchange.ExchangeService.getDeviceId(ExchangeService.java:1249) 03-16 00:53:40.981: E/ActivityThread(875): at com.android.exchange.ExchangeService$7.run(ExchangeService.java:1856) 03-16 00:53:40.981: E/ActivityThread(875): at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:551) 03-16 00:53:40.981: E/ActivityThread(875): at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:549) 03-16 00:53:40.981: E/ActivityThread(875): at android.os.AsyncTask$2.call(AsyncTask.java:287) 03-16 00:53:40.981: E/ActivityThread(875): at java.util.concurrent.FutureTask.run(FutureTask.java:234) 03-16 00:53:40.981: E/ActivityThread(875): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080) 03-16 00:53:40.981: E/ActivityThread(875): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573) 03-16 00:53:40.981: E/ActivityThread(875): at java.lang.Thread.run(Thread.java:856) 03-16 00:53:40.991: E/StrictMode(875): null 03-16 00:53:40.991: E/StrictMode(875): android.app.ServiceConnectionLeaked: Service com.android.exchange.ExchangeService has leaked ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@40d5f790 that was originally bound here 03-16 00:53:40.991: E/StrictMode(875): at android.app.LoadedApk$ServiceDispatcher.&lt;init&gt;(LoadedApk.java:969) 03-16 00:53:40.991: E/StrictMode(875): at android.app.LoadedApk.getServiceDispatcher(LoadedApk.java:863) 03-16 00:53:40.991: E/StrictMode(875): at android.app.ContextImpl.bindService(ContextImpl.java:1418) 03-16 00:53:40.991: E/StrictMode(875): at android.app.ContextImpl.bindService(ContextImpl.java:1407) 03-16 00:53:40.991: E/StrictMode(875): at android.content.ContextWrapper.bindService(ContextWrapper.java:473) 03-16 00:53:40.991: E/StrictMode(875): at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:157) 03-16 00:53:40.991: E/StrictMode(875): at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:145) 03-16 00:53:40.991: E/StrictMode(875): at com.android.emailcommon.service.AccountServiceProxy.getDeviceId(AccountServiceProxy.java:116) 03-16 00:53:40.991: E/StrictMode(875): at com.android.exchange.ExchangeService.getDeviceId(ExchangeService.java:1249) 03-16 00:53:40.991: E/StrictMode(875): at com.android.exchange.ExchangeService$7.run(ExchangeService.java:1856) 03-16 00:53:40.991: E/StrictMode(875): at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:551) 03-16 00:53:40.991: E/StrictMode(875): at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:549) 03-16 00:53:40.991: E/StrictMode(875): at android.os.AsyncTask$2.call(AsyncTask.java:287) 03-16 00:53:40.991: E/StrictMode(875): at java.util.concurrent.FutureTask.run(FutureTask.java:234) 03-16 00:53:40.991: E/StrictMode(875): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080) 03-16 00:53:40.991: E/StrictMode(875): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573) 03-16 00:53:40.991: E/StrictMode(875): at java.lang.Thread.run(Thread.java:856) 03-16 00:53:46.391: E/SurfaceFlinger(36): ro.sf.lcd_density must be defined as a build property 03-16 00:53:46.651: E/Trace(1958): error opening trace file: No such file or directory (2) 03-16 00:53:49.301: E/SurfaceFlinger(36): ro.sf.lcd_density must be defined as a build property </code></pre>
 

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