Searchable Listview

Question

Here I am Creating ListView which shows songlist. And on list item click i am passing the position of the song to play it. Means i have functionlke playSong(Int Index). That works perfactly. But when i perform search ,it shows searchable item and on that item click it i am not gettig the real position of it.

example :

list shows me items like 1) Be with You 2) Can you here me 3) let it be

but now when i search "can you here me" , it shows list with "can you here me". And when i click on this item , It takes 0 index and plays "Be with You" song.

so what is missing in my code ?? Please suggest me.

Here is my code :

ArrayList<HashMap<String, String>> songsListData = new ArrayList<HashMap<String, String>>();
        Cursor cursor = managedQuery(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,null , null, null,MediaStore.Audio.Media.TITLE );          
          if (cursor == null) 
          {
              //Query Failed , Handle error.
          }
          else if (!cursor.moveToFirst()) 
          {
             //No media on the device.
          }
          else
          {

              int titleColumn = cursor.getColumnIndex(android.provider.MediaStore.Audio.Media.TITLE);
              int idColumn = cursor.getColumnIndexOrThrow(android.provider.MediaStore.Audio.Media.DATA);
              int artistcolumn = cursor.getColumnIndex(android.provider.MediaStore.Audio.Media.ARTIST);
              int durationcolumn =cursor.getColumnIndex(android.provider.MediaStore.Audio.Media.DURATION);

              for(int i=0;i<cursor.getCount();i++)
              {
                    String thisTitle = cursor.getString(titleColumn);
                    String path = cursor.getString(idColumn);
                    String artist = cursor.getString(artistcolumn);
                    Long duration = cursor.getLong(durationcolumn);
                    Utilities objUtilities = new Utilities();
                    String timeDuration = objUtilities.milliSecondsToTimer(duration);

                   HashMap<String, String> song = new HashMap<String, String>();
                   song.put("songTitle",thisTitle);
                   song.put("songPath", path);
                   song.put("artist", artist);
                   song.put("duration",timeDuration);

                   // Adding each song to SongList
                   songsList.add(song);
                   cursor.moveToNext();
              }
          }


        // looping through playlist
        for (int i = 0; i < songsList.size(); i++) {
            // creating new HashMap
            HashMap<String, String> song = songsList.get(i);

            // adding HashList to ArrayList
            songsListData.add(song);
        }


        // Adding menuItems to ListView
        String[] from = {"songTitle", "artist" , "duration"};
        int[] to={R.id.songTitle,R.id.songArtist, R.id.duration};
         adapter = new SimpleAdapter(this, songsListData,
                R.layout.playlist_item, from, to);

        setListAdapter(adapter);

        // selecting single ListView item
        ListView lv = getListView();

        // listening to single listitem click
        lv.setOnItemClickListener(new OnItemClickListener() {

            public void onItemClick(AdapterView<?> parent, View view,
                    int position, long id) {
                // getting listitem index
                int songIndex = position;

                // Starting new intent
                Intent in = new Intent(getApplicationContext(),
                        AndroidBuildingMusicPlayerActivity.class);

                // Sending songIndex to PlayerActivity
                in.putExtra("songIndex", songIndex);                
                startActivity(in);  

            }
        });

        inputSearch = (EditText) findViewById(R.id.inputSearch);
        inputSearch.addTextChangedListener(new TextWatcher() {


            public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) {
                // When user changed the Text
            ((SimpleAdapter)getListAdapter()).getFilter().filter(cs);   

            }


            public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,
                    int arg3) {
                // TODO Auto-generated method stub

            }


            public void afterTextChanged(Editable arg0) {
                // TODO Auto-generated method stub                          
            }
        });

}

Answer 1

What you can do is override the getItemId method of your adapter to return the 'real' song index. Then you will retrieve this index from the id parameter of your onItemClick callback.

Try this:

    adapter = new SimpleAdapter(this, songsListData, R.layout.playlist_item, from, to) {
        public long getItemId(int position) { 
            return songsListData.indexOf(getItem(position));
        }
    };

And make sure that your songsListData is declared final (so that you can access it from inside the adapter):

final ArrayList<HashMap<String, String>> songsListData = new ArrayList<HashMap<String, String>>();

Then in your onItemClick method just use id instead of position:

        public void onItemClick(AdapterView<?> parent, View view,
                int position, long id) {
            // getting listitem index
            int songIndex = id;
            ...