Android Fragments Issue

Question

Ok Im trying to download some xml and am using fragments. I have got a source not found error and believe there is something up with my code. The logcat is producing no errors the app shuts down as soon as it is opened here is my main fragment

 package com.paad.earthquake;

import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.GregorianCalendar;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;

import android.app.ListFragment;
import android.location.Location;
import android.os.Bundle;
import android.util.Log;
import android.widget.ArrayAdapter;

public class EarthquakeListFragment extends ListFragment {

 ArrayAdapter<Quake> aa;
 ArrayList<Quake> earthquakes = new ArrayList<Quake>();

 @Override
  public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);

int layoutID = android.R.layout.simple_list_item_1;
aa = new ArrayAdapter<Quake>(getActivity(), layoutID , earthquakes);
setListAdapter(aa);

refreshEarthquakes();
  }

  private static final String TAG = "EARTHQUAKE";
   private void refreshEarthquakes() {
    // Get the XML
     URL url;
    try {
      String quakeFeed = getString(R.string.quake_feed);
      url = new URL(quakeFeed);

    URLConnection connection;
  connection = url.openConnection();

  HttpURLConnection httpConnection = (HttpURLConnection)connection;
  int responseCode = httpConnection.getResponseCode();

  if (responseCode == HttpURLConnection.HTTP_OK) {
    InputStream in = httpConnection.getInputStream();

    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
    DocumentBuilder db = dbf.newDocumentBuilder();

    // Parse the earthquake feed.
    Document dom = db.parse(in);
    Element docEle = dom.getDocumentElement();

    // Clear the old earthquakes
    earthquakes.clear();

    // Get a list of each earthquake entry.
    NodeList nl = docEle.getElementsByTagName("entry");
    if (nl != null && nl.getLength() > 0) {
      for (int i = 0 ; i < nl.getLength(); i++) {
        Element entry = (Element)nl.item(i);
        Element title = (Element)entry.getElementsByTagName("title").item(0);
        Element g = (Element)entry.getElementsByTagName("georss:point").item(0);
        Element when = (Element)entry.getElementsByTagName("updated").item(0);
        Element link = (Element)entry.getElementsByTagName("link").item(0);

        String details = title.getFirstChild().getNodeValue();
        String hostname = "http://earthquake.usgs.gov";
        String linkString = hostname + link.getAttribute("href");

        String point = g.getFirstChild().getNodeValue();
        String dt = when.getFirstChild().getNodeValue(); 
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'hh:mm:ss'Z'");
        Date qdate = new GregorianCalendar(0,0,0).getTime();
        try {
          qdate = sdf.parse(dt);
        } catch (ParseException e) {
          Log.d(TAG, "Date parsing exception.", e);
        }

        String[] location = point.split(" ");
        Location l = new Location("dummyGPS");
        l.setLatitude(Double.parseDouble(location[0]));
        l.setLongitude(Double.parseDouble(location[1]));

        String magnitudeString = details.split(" ")[1];
        int end =  magnitudeString.length()-1;
        double magnitude = Double.parseDouble(magnitudeString.substring(0, end));

        details = details.split(",")[1].trim();

        Quake quake = new Quake(qdate, details, l, magnitude, linkString);

        // Process a newly found earthquake
             addNewQuake(quake);
          }
        }
       }
    } catch (MalformedURLException e) {
        Log.d(TAG, "MalformedURLException", e);
    } catch (IOException e) {
      Log.d(TAG, "IOException", e);
    } catch (ParserConfigurationException e) {
  Log.d(TAG, "Parser Configuration Exception", e);
} catch (SAXException e) {
  Log.d(TAG, "SAX Exception", e);
}
finally {
}
  }

    private void addNewQuake(Quake _quake) {
     // Add the new quake to our list of earthquakes.
      earthquakes.add(_quake);

        // Notify the array adapter of a change.
       aa.notifyDataSetChanged();
      }

Here is my main java class

package com.paad.earthquake;

  import android.os.Bundle;
  import android.support.v4.app.FragmentActivity;

   public class Earthquake extends FragmentActivity {

   @Override
   public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
   }

}

And here is my main xml

<?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="fill_parent"
  android:orientation="horizontal" >
 <fragment 
  android:name="com.paad.earthquake.EarthquakeListFragment"
    android:id="@+id/EarthquakeListFragment"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

    </LinearLayout>

I also have a helper class but I dont think you will have to see that. Any help is appreciated. Log cat is throwing no exceptions dont even know where to start looking on this one.

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.paad.earthquake"
android:versionCode="1"
android:versionName="1.0" >
<uses-permission android:name="android.permission.INTERNET"/>

<application
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name=".Earthquake"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
</application>

Answer 1

In my experience closing directly after launch without a stack trace usually means that there is a problem with your AndroidManifest.xml file. Do you have your main activity declared in the manifest?

If you do , can you post that here as well?