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POHow to list all files and folders locating on sd card
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  1. POHow to list all files and folders locating on sd card
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    copied!<p>I have made a program that list all files and folders(f&amp;f) locating on sd card. If i touch one of the list item ( if it is a folder ) then the list shows faf locating on that folder. </p> <p>Here is the source code</p> <pre><code>public class FileList extends ListActivity { private File file; private List&lt;String&gt; myList; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); myList = new ArrayList&lt;String&gt;(); String root_sd = Environment.getExternalStorageDirectory().toString(); file = new File( root_sd + "/external_sd" ) ; File list[] = file.listFiles(); for( int i=0; i&lt; list.length; i++) { myList.add( list[i].getName() ); } setListAdapter(new ArrayAdapter&lt;String&gt;(this, android.R.layout.simple_list_item_1, myList )); } protected void onListItemClick(ListView l, View v, int position, long id) { super.onListItemClick(l, v, position, id); File temp_file = new File( file, myList.get( position ) ); if( !temp_file.isFile()) { file = new File( file, myList.get( position )); File list[] = file.listFiles(); myList.clear(); for( int i=0; i&lt; list.length; i++) { myList.add( list[i].getName() ); } Toast.makeText(getApplicationContext(), file.toString(), Toast.LENGTH_LONG).show(); setListAdapter(new ArrayAdapter&lt;String&gt;(this, android.R.layout.simple_list_item_1, myList )); } } @Override public boolean dispatchKeyEvent(KeyEvent event) { if( KeyEvent.KEYCODE_BACK == event.getKeyCode()) { String parent = file.getParent().toString(); file = new File( parent ) ; File list[] = file.listFiles(); myList.clear(); for( int i=0; i&lt; list.length; i++) { myList.add( list[i].getName() ); } Toast.makeText(getApplicationContext(), parent, Toast.LENGTH_LONG).show(); setListAdapter(new ArrayAdapter&lt;String&gt;(this, android.R.layout.simple_list_item_1, myList )); } return true; } } </code></pre> <p>Now i have two questions</p> <ol> <li><p>when i touch "back" button then it list back two step. say currently the list is showing the f&amp;f under "external_sd/Video/Bangla" . After pressing back button the list is not showing f&amp;f under "external_sd/Video/", but under "external_sd/".</p></li> <li><p>Is there a better solution to show all f&amp;f like JFileChooser in java ?</p></li> </ol>
 

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