诚实小郎君

protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.layout_listview_simple);
    
    //取得ListView实例
    ListView lvwSimple = (ListView)findViewById(R.id.lvw_simple);
    //要在ListView中显示的数据集合
    String items[] = new String[] {"item1", "item2", "item3", "item4", "item5"};
    //new一个ArrayAdapter，android.R.layout.simple_list_item_1为ListView显示的布局文件
    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, items);
    //位ListView设置Adapter
    lvwSimple.setAdapter(adapter);
}

<?xml version="1.0" encoding="utf-8"?>
<!-- 自定义布局文件 -->
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
    <ImageView
          android:id="@+id/lvw_custom_img"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_gravity="center_vertical"
          android:layout_margin="5dip"    
          android:background="@drawable/custom"    
          />
    <LinearLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:orientation="vertical"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content">
        <TextView 
            android:id="@+id/lvw_custom_name"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="5dip"
            android:layout_marginRight="5dip"
            android:layout_marginTop="5dip"
            android:textSize="25dip"
            android:text="item名称"/>
        <TextView 
            android:id="@+id/lvw_custom_description"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_margin="5dip"
            android:textSize="10dip"
            android:text="item描述..."/>
    </LinearLayout>
</LinearLayout>

/**
     * 取得用于ListView的数据
     * @return
     */
    private ArrayList<HashMap<String, Object>> getItems() {
        ArrayList<HashMap<String, Object>> items = new ArrayList<HashMap<String, Object>>();
        for(int i = 0; i < 5; i++) {
            //***********************************************
            //* 每一个map中的数据对应与ListView中的一个item *
            //* 在我自定义的布局文件中，一个item包括：      *
            //* 1、图片（lvw_custom_img）                   *
            //* 2、名称（lvw_custom_name）                  *
            //* 3、描述（lvw_custom_description）           *
            //* 所以map中也至少需要包括这三项数据           *
            //***********************************************
            HashMap<String, Object> map = new HashMap<String, Object>();
            //图片，key值可以随便取，映射关系会在实例化Adapter时定义，但我喜欢将key与布局文件中定义的id取同样的值
            //value值为图片的资源id
            map.put("lvw_custom_img", R.drawable.custom);
            //名称
            map.put("lvw_custom_name", "item名称");
            //描述
            map.put("lvw_custom_description", "item描述");
            
            items.add(map);
        }
        return items;
    }

//取得ListView实例
        ListView lvwCustom = (ListView)findViewById(R.id.lvw_custom);
        //要在ListView中显示的数据集合
        ArrayList<HashMap<String, Object>> items = getItems();
        //************************************************************************
        //* new一个SimpleAdapter                                                 *
        //* items为数据集合                                                      *
        //* R.layout.lvw_custom为自定义的ListView布局文件                        *
        //* 第四个参数为map中德key集合                                           *
        //* 第五个参数为自定义布局文件中空间的资源id集合，与第四个参数要一一对应 *
        //************************************************************************
        SimpleAdapter adapter = new SimpleAdapter(this, items, R.layout.lvw_custom, 
                new String[] {"lvw_custom_img","lvw_custom_name","lvw_custom_description"}, 
                new int[] {R.id.lvw_custom_img, R.id.lvw_custom_name, R.id.lvw_custom_description});
        //位ListView设置Adapter
        lvwCustom.setAdapter(adapter);

private void bindView(int position, View view) {
        final Map dataSet = mData.get(position);
        if (dataSet == null) {
            return;
        }

        final ViewBinder binder = mViewBinder;
        final View[] holder = mHolders.get(view);
        final String[] from = mFrom;
        final int[] to = mTo;
        final int count = to.length;

        for (int i = 0; i < count; i++) {
            final View v = holder[i];
            if (v != null) {
                final Object data = dataSet.get(from[i]);
                String text = data == null ? "" : data.toString();
                if (text == null) {
                    text = "";
                }

                boolean bound = false;
                if (binder != null) {
                    bound = binder.setViewValue(v, data, text);
                }

                if (!bound) {
                    if (v instanceof Checkable) {
                        if (data instanceof Boolean) {
                            ((Checkable) v).setChecked((Boolean) data);
                        } else {
                            throw new IllegalStateException(v.getClass().getName() +
                                    " should be bound to a Boolean, not a " + data.getClass());
                        }
                    } else if (v instanceof TextView) {
                        // Note: keep the instanceof TextView check at the bottom of these
                        // ifs since a lot of views are TextViews (e.g. CheckBoxes).
                        setViewText((TextView) v, text);
                    } else if (v instanceof ImageView) {
                        if (data instanceof Integer) {
                            setViewImage((ImageView) v, (Integer) data);                            
                        } 
                        //这里增加对Bitmap类型的判断
                            else if(data instanceof Bitmap) {
                            ((ImageView)v).setImageBitmap((Bitmap)data);
                        }
                        else {
                            setViewImage((ImageView) v, text);
                        }
                    } else {
                        throw new IllegalStateException(v.getClass().getName() + " is not a " +
                                " view that can be bounds by this SimpleAdapter");
                    }
                }
            }
        }
    }

/**
     * 根据playlistId获得歌曲列表,用于ListView显示
     * 
     * @param playlistId
     *            0表示所有歌曲
     * @return
     */
    private List<Map<String, Object>> getSongList(int playlistId) {
        
        // 取得符合条件的所有歌曲
        List<Song> songs = getSongs(playlistId);
        // 构造SongList的数据
        List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();

        Map<String, Object> map1 = new HashMap<String, Object>();
        //这里的Type是用于在getView方法中判断并构造布局的
        map1.put("type", TYPE_BTN);
        map1.put("id", ID_RANDOM_PLAY);
        map1.put("mainlist_btn_name", "随机播放");
        map1.put("mainlist_btn_img", R.drawable.list_random_icon);

        list.add(map1);

        if (songs != null) {
            int size = songs.size();
            for (int i = 0; i < size; i++) {
                Song song = songs.get(i);
                Map<String, Object> map = new HashMap<String, Object>();
                //这里的Type是用于在getView方法中判断并构造布局的
                map.put("type", TYPE_SONG_LIST);
                map.put("id", song.getId());
                Bitmap bm = MusicHelper.getArtwork(this, song.getId(), song
                        .getAlbumId(), true);
                map.put("songlist_cover_img", bm);
                map.put("songlist_song_name", song.getTitle());
                map.put("songlist_song_album", song.getAlbum());
                map.put("songlist_song_artist", song.getArtist());
                list.add(map);
            }
        }
        return list;
    }

<?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="fill_parent"
    >
    <ImageView
          android:id="@+id/songlist_cover_img"
          android:layout_width="48dip"
          android:layout_height="48dip"
          android:layout_alignParentLeft="true"
          android:layout_centerVertical="true"
          android:layout_marginLeft="6dip"        
          />
     <LinearLayout
         android:orientation="vertical"
         android:layout_width="fill_parent"
         android:layout_height="wrap_content"
         android:layout_toRightOf="@id/songlist_cover_img"
         android:layout_alignParentRight="true"
         android:layout_centerVertical="true">
         <TextView
             android:id="@+id/songlist_song_name"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_marginTop="6dip"
             android:layout_marginLeft="6dip"
             android:layout_marginBottom="3dip"
             android:textSize="24dip"
             android:textColor="@drawable/black">
         </TextView>
         <RelativeLayout
             android:layout_width="fill_parent"
             android:layout_height="wrap_content"
             android:layout_marginBottom="6dip">
             <TextView
                 android:id="@+id/songlist_song_album"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
                 android:layout_marginTop="3dip"
                 android:layout_marginLeft="6dip"
                 android:textSize="10dip"
                 android:textColor="@drawable/black">
             </TextView>
             <TextView
                 android:id="@+id/songlist_song_artist"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
                 android:layout_marginTop="3dip"        
                 android:layout_marginRight="6dip"
                 android:layout_alignParentRight="true"
                 android:textSize="10dip"
                 android:textColor="@drawable/black">
             </TextView>
         </RelativeLayout>
     </LinearLayout>
</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
    <TextView
             android:id="@+id/mainlist_btn_name"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_marginLeft="6dip"
             android:layout_marginTop="10dip"
             android:layout_marginBottom="10dip"
            android:layout_gravity="center_vertical"
             android:textSize="28dip"
             android:textColor="@drawable/black"/>
    <ImageView
          android:id="@+id/mainlist_btn_img"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_gravity="center_vertical"
          android:layout_marginLeft="6dip"        
          />
</LinearLayout>

@Override
    public View getView(int position, View convertView, ViewGroup parent) {
        LayoutInflater inflater = LayoutInflater.from(context);
        //产生一个View  
        View view = null;  
        //根据type不同的数据类型构造不同的View，0代表歌曲，1代表按钮菜单
        //这个list是ListView的数据项集合，是通过构造方法传递进来的
        int type = (Integer)list.get(position).get("type");
        if(0 == type) {
            view = inflater.inflate(R.layout.list_songs, null);
            //获取songlist_cover_img
            ImageView songlist_cover_img = (ImageView)view.findViewById(R.id.songlist_cover_img);
            songlist_cover_img.setImageBitmap((Bitmap)list.get(position).get("songlist_cover_img"));
            //获取songlist_song_name
            TextView songlist_song_name = (TextView)view.findViewById(R.id.songlist_song_name);
            String song_name = list.get(position).get("songlist_song_name").toString();
            songlist_song_name.setText(song_name);
            //获取songlist_song_album属性
            TextView songlist_song_album = (TextView)view.findViewById(R.id.songlist_song_album);
            String song_album = list.get(position).get("songlist_song_album").toString();
            songlist_song_album.setText(song_album);
            //获取songlist_song_artist属性
            TextView songlist_song_artist = (TextView)view.findViewById(R.id.songlist_song_artist);
            String song_artist = list.get(position).get("songlist_song_artist").toString();
            songlist_song_artist.setText(song_artist);
        } else if(1 == type) {
            view = inflater.inflate(R.layout.list_main_btn, null);
            //获取按钮菜单的mainlist_btn_name属性
            TextView mainlist_btn_name = (TextView)view.findViewById(R.id.mainlist_btn_name);
            String btn_name = list.get(position).get("mainlist_btn_name").toString();
            mainlist_btn_name.setText(btn_name);
            //获取mainlist_btn_img
            ImageView mainlist_btn_img = (ImageView)view.findViewById(R.id.mainlist_btn_img);
            int resId = (Integer)list.get(position).get("mainlist_btn_img");
            mainlist_btn_img.setImageResource(resId);
        } else {
            
        }
        
        return view;
    }

list = getSongList(playlistId);
SongListAdapter adapter = new SongListAdapter(list, this);
songList.setAdapter(adapter);