title: How to use an ArrayAdapter to return and show a ListView
body: <p>I am writing code for an mp3 player I am trying to create. I am only at the start of the project and want to be able to read and show all of the mp3 files that is on my sd card. I don't want to use the direct path method. Now this code I have written gathers all of the mp3 files for me but the only problem is that it does not view them on screen for me. The app shows a blank screen, but doesn't crash.</p>
  
  <p>I got help and advice off of a tutor and I was told to use an ArrayAdapter to view the results but I can't find any help to show it. If anyone could please help that would be great.</p>
  
  <p>Here is my code in the onCreate method;</p>
  
  <pre><code>ListView list;
  Cursor cursor;
  int columnIndex;
  int count;
  
  @Override
  public void onCreate(Bundle savedInstanceState) 
  {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
  
      //list = (ListView) findViewById(R.id.list);
  
      //A array is created that display the 3 fields
      String[] displayMusic = {MediaStore.Audio.Media._ID, MediaStore.Audio.Media.DISPLAY_NAME, MediaStore.Audio.Media.TITLE};
      //the cursor displays all of the audio in the sd card, just to limit to .mp3 files now
      cursor = getContentResolver().query(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, displayMusic, null, null, null);
  
      //this is the loop that gather all of the .mp3 files
      int pos = 1;
      ArrayList&lt;String&gt; listOfMp3s = new ArrayList&lt;String&gt;();
      while (cursor.moveToNext())
      {
          if(cursor.getString(pos).endsWith("mp3"))
          {
              listOfMp3s.add(cursor.getString(pos));
          }
      }
  
  
      String[] displayFields = new String[] {MediaStore.Audio.Media.DISPLAY_NAME};
      int[] displayViews = new int[] {android.R.id.text1};
      //setListAdapter = new SimpleCursorAdapter(this, android.R.layout.simple_list_item_1, cursor, displayFields, displayViews);
      ArrayAdapter&lt;String&gt; musicAdapter = new ArrayAdapter&lt;String&gt;(getBaseContext(), R.layout.list_songs, listOfMp3s);
      //list.setAdapter(listOfMp3s);
   }
  </code></pre>