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PONo data available listview
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  1. PONo data available listview
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    copied!<p>I ran into problem with creating listview in my android app.</p> <p>This is my code:</p> <pre><code>public class MainActivity extends ListActivity { private SimpleAdapter emAdapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Set layout as view setContentView(R.layout.main_ui_layout); final Utility utility = new Utility(this); utility.getFiles(); final ListView FileListView = (ListView) findViewById(android.R.id.list); FileListView.setEmptyView(findViewById(R.id.progressBar)); // Create a HashMap for items final ArrayList&lt;HashMap&lt;String, String&gt;&gt; ListItems = new ArrayList&lt;HashMap&lt;String, String&gt;&gt;(); // we using thread to simulate the download of data Thread emThread = new Thread(new Runnable() { public void run() { // Waiting 3s try { Thread.sleep(2500); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } // Looping through all item nodes &lt;item&gt; for (int em = 0; em &lt; utility.FileMap.size(); em++) { HashMap&lt;String, String&gt; emMap = new HashMap&lt;String, String&gt;(); File Files = new File(utility.FileMap.get("DuroodSharif")); emMap.put(Files.getName(), utility.FileMap.get("DuroodSharif")); ListItems.add(emMap); } } }); // Stop Progress Bar utility.StopProgressBar(); // Adding ListItems to ListView emAdapter = new SimpleAdapter(this, ListItems, R.layout.list_item, new String[] { getString(R.string.TITLE_ID), getString(R.string.DESCRIPTION_ID) }, new int[] { R.id.title, R.id.desciption }); runOnUiThread(new Runnable() { @Override public void run() { // Set List Adapter FileListView.setAdapter(emAdapter); } }); emThread.start(); // Later there's no data Thread myThread = new Thread(new Runnable() { public void run() { // Waiting 3s try { Thread.sleep(1000); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } ListItems.clear(); runOnUiThread(new Runnable() { // Run on the UI Thread to setthe // adapter to the list public void run() { FileListView.setEmptyView(findViewById(R.id.emptyText)); emAdapter.notifyDataSetChanged(); } }); } }); myThread.start(); // Selecting single ListView item ListView emlistView = getListView(); emlistView.setOnItemClickListener(new 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.title)).getText().toString(); String description = ((TextView) view.findViewById(R.id.desciption)).getText().toString(); // Starting new intent Intent in = new Intent(getApplicationContext(), SingleMenuItemActivity.class); in.putExtra(getString(R.string.TITLE_ID), title); in.putExtra(getString(R.string.DESCRIPTION_ID), description); startActivity(in); } }); } </code></pre> <p>and this is my layout file</p> <pre><code>&lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="@drawable/app_background_portrait_type2" android:orientation="vertical" &gt; &lt;ListView android:id="@android:id/list" android:layout_width="fill_parent" android:layout_height="fill_parent" /&gt; &lt;ProgressBar android:id="@+id/progressBar" style="?android:attr/progressBarStyleLarge" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:visibility="gone" /&gt; &lt;TextView android:id="@+id/emptyText" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:text="No data available" android:visibility="gone" /&gt; </code></pre> <p>'</p> <p>What I am trying to achieve is showing the progress bar till the listview not filled with data the progress bar is displaying continuously. i am adding name of mp3 file from asset folder in my map and then adding that map in to ListItems and till this process is going i am showing a progress bar. </p> <p>Can anybody point me to right direction?</p> <p>Thanks in advance. </p>
 

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