Databases
StackOverflow2013
Postsdbo
POUsing fragment for ListView
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POUsing fragment for ListView
    primarykey
    data
    text
    <p>I am trying to populate my <code>ListView</code> with Items from an XML-File.</p> <p>I know its because I use<code>Fragments</code>, but i don't really know how i can fix it.</p> <p>StackTrace</p> <pre><code>FATAL EXCEPTION: main java.lang.RuntimeException: Unable to start activity ComponentInfo{com.iklikla.codetechblog/com.iklikla.codetechblog.FrontpageActivity}: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list' at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230) at android.app.ActivityThread.access$600(ActivityThread.java:141) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:137) at android.app.ActivityThread.main(ActivityThread.java:5041) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:511) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) at dalvik.system.NativeStart.main(Native Method) Caused by: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list' at android.app.ListActivity.onContentChanged(ListActivity.java:243) at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:273) at android.app.Activity.setContentView(Activity.java:1881) at com.iklikla.codetechblog.FrontpageActivity.onCreate(FrontpageActivity.java:56) at android.app.Activity.performCreate(Activity.java:5104) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)             at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)             at android.app.ActivityThread.access$600(ActivityThread.java:141)             at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)             at android.os.Handler.dispatchMessage(Handler.java:99)             at android.os.Looper.loop(Looper.java:137)             at android.app.ActivityThread.main(ActivityThread.java:5041)             at java.lang.reflect.Method.invokeNative(Native Method)             at java.lang.reflect.Method.invoke(Method.java:511) </code></pre> <p>My Activity:</p> <pre><code>public class FrontpageActivity extends ListActivity { // All static variables static final String URL = "http://blog.codetech.de/rss"; // XML node keys static final String KEY_ITEM = "item"; // parent node static final String KEY_TITLE = "title"; static final String KEY_LINK = "link"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_frontpage); ActionBar actionBar = getActionBar(); actionBar.setDisplayUseLogoEnabled(true); if (savedInstanceState == null) { getFragmentManager().beginTransaction() .add(R.id.container, new PlaceholderFragment()) .commit(); } ArrayList&lt;HashMap&lt;String, String&gt;&gt; menuItems = new ArrayList&lt;HashMap&lt;String, String&gt;&gt;(); XMLParser parser = new XMLParser(); String xml = parser.getXmlFromUrl(URL); // getting XML Document doc = parser.getDomElement(xml); // getting DOM element NodeList nl = doc.getElementsByTagName(KEY_ITEM); // looping through all item nodes &lt;item&gt; for (int i = 0; i &lt; nl.getLength(); i++) { // creating new HashMap HashMap&lt;String, String&gt; map = new HashMap&lt;String, String&gt;(); Element e = (Element) nl.item(i); // adding each child node to HashMap key =&gt; value map.put(KEY_TITLE, parser.getValue(e, KEY_TITLE)); map.put(KEY_LINK, parser.getValue(e, KEY_LINK)); // adding HashList to ArrayList menuItems.add(map); } // Adding menuItems to ListView ListAdapter adapter = new SimpleAdapter(this, menuItems, R.layout.list, new String[] { KEY_TITLE, KEY_LINK }, new int[] { R.id.textView, R.id.textView2 }); setListAdapter(adapter); // selecting single ListView item ListView lv = getListView(); // listening to single listitem click lv.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView&lt;?&gt; parent, View view, int position, long id) { // getting values from selected ListItem String title = ((TextView) view.findViewById(R.id.textView)).getText().toString(); String link = ((TextView) view.findViewById(R.id.textView2)).getText().toString(); // Starting new intent Intent in = new Intent(getApplicationContext(), WebViewActivity.class); in.putExtra(KEY_TITLE, title); in.putExtra(KEY_LINK, link); startActivity(in); } }); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.frontpage, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { int itemId = item.getItemId(); switch (itemId) { case R.id.action_reload: Intent intent_reload = new Intent(this, FrontpageActivity.class); startActivity(intent_reload); break; case R.id.action_about: Intent intent_about = new Intent(this, AboutActivity.class); startActivity(intent_about); break; default: break; } return true; } /** * A placeholder fragment containing a simple view. */ public static class PlaceholderFragment extends Fragment { public PlaceholderFragment() { } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View rootView = inflater.inflate(R.layout.fragment_frontpage, container, false); return rootView; } } } </code></pre> <p>And my fragment XML:</p> <pre><code>&lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" android:paddingBottom="@dimen/activity_vertical_margin" tools:context="com.iklikla.codetechblog.FrontpageActivity$PlaceholderFragment" android:background="@color/background_grey"&gt; &lt;ListView android:id="@android:id/list" android:layout_width="fill_parent" android:layout_height="wrap_content" android:entries="@array/tutorialTitle" android:background="@drawable/card"/&gt; &lt;/RelativeLayout&gt; </code></pre> <p>EDIT: Here is my activity_frontpage.xml</p> <pre><code>&lt;FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/container" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.iklikla.codetechblog.FrontpageActivity" tools:ignore="MergeRootFrame" /&gt; </code></pre>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. USRaghunandan
    1. USAndreas Heimann
    plurals
    1. This table or related slice is empty.
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POUsing fragment for ListView
      1. This table or related slice is empty.
      1. VTDownMod
    2. VO
      singulars
      1. POUsing fragment for ListView
      1. This table or related slice is empty.
      1. VTDownMod
    3. VO
      singulars
      1. POUsing fragment for ListView
      1. This table or related slice is empty.
      1. VTUpMod
    1. COshow us `activity_frontpage.xml`
      singulars
      1. POUsing fragment for ListView
      1. USRaghunandan
    2. COupdated the post..
      singulars
      1. POUsing fragment for ListView
      1. USAndreas Heimann
    3. COcheck my answer you do not have a listview with id as shown in my post in `activity_frontpage.xml`
      singulars
      1. POUsing fragment for ListView
      1. USRaghunandan
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload