在Android的列表視圖中顯示字母索引

Question

我已經創建了列表視圖，我想在我的列表視圖中實現sectionindexer和alphabetIndexer。 我正在嘗試http://www.anddev.org/tutalphabetic_fastscroll_listview_-_similar_to_contacts-t10123.html。這很好。但對於我的代碼，我沒有得到如何實現該功能。

這裏是我的list_item.xml代碼：

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:orientation="vertical" 
    android:gravity="center" 
    android:background="@drawable/list_selector" 
    android:padding="5dp" 
    android:id="@+id/tab"> 

    <LinearLayout android:id="@+id/thumbnail" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:padding="3dip" 
     android:layout_alignParentLeft="true" 
     android:layout_marginRight="5dip"> 

     <ImageView 
      android:id="@+id/list_image" 
      android:layout_width="50dip" 
      android:layout_height="50dip" 
      android:src="@drawable/musicsymbol"/> 

    </LinearLayout> 

    <TextView 
     android:id="@+id/songTitle" 
     android:layout_width="200dip" 
     android:layout_height="wrap_content" 
     android:textSize="16dp" 
     android:textColor="#ffffff" 
     android:textStyle="bold" 
     android:layout_alignTop="@+id/thumbnail" 
     android:color="#10bcc9" 
     android:maxLines="1" 
     android:layout_toRightOf="@+id/thumbnail" 
     /> 

     <TextView 
     android:id="@+id/duration" 
     android:layout_width="56dip" 
     android:layout_height="wrap_content" 
     android:layout_alignParentRight="true" 
     android:layout_toRightOf="@id/songTitle" 
     android:gravity="right" 
     android:layout_marginRight="5dip" 
     android:textSize="15dip" 
     android:textColor="#10bcc9" 
     android:textStyle="bold" 
     android:maxLines="1" 
     /> 

     <TextView 
     android:id="@+id/songArtist" 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:layout_below="@id/songTitle" 
     android:textSize="14dp" 
     android:color="#10bcc9" 
     android:textStyle="bold" 
     android:lines="1" 
     android:layout_toRightOf="@+id/thumbnail" 
     /> 

我的Java代碼：

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); 

所以如何實現我的這個listadapter sectionindexer。請給我一些解決方案。感謝名單。

Answer 1

您可以使用此library。這是Android的ListView最簡單的部分適配器。