从媒体存储中不同歌曲的列表视图中，我需要设置uri路径，以便媒体播放器可以开始使用这首歌曲。

ArrayList<Map<String, Object>> list = EnsembleChansons.getInstance().getList(this, artiste);

    ListAdapter adapter = new SimpleAdapter(this, list, R.layout.list_row,new String[]{"title","artist","album","duration","cover"}, new int[]{R.id.unameList, R.id.scoreList,R.id.albumText, R.id.cLeftList, R.id.imageSong});

    ((SimpleAdapter) adapter).setViewBinder(new SimpleAdapter.ViewBinder(){

        @Override
        public boolean setViewValue(View view, Object data, String textRepresentation) {
            if( (view instanceof ImageView) & (data instanceof Bitmap) ) {
                ImageView iv = (ImageView) view;
                Bitmap bm = (Bitmap) data;
                iv.setImageBitmap(bm);
                return true;
            }
            return false;
        }
    });

    listeChanson.setAdapter(adapter);

    listeChanson.setOnItemClickListener(new AdapterView.OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> parent, View v, int position, long id) {

            HashMap<String, String> item = (HashMap<String, String>) parent.getItemAtPosition(position);
            String title = item.get("title");
            String artist = item.get("artist");
            String album = item.get("album");
            Toast.makeText(getBaseContext(), title, Toast.LENGTH_LONG).show();
            openActivity(v, title, artist, album);
        }
    });

这是搜索类
public arraylist<map<string，object>>getlist（活动a，字符串艺术家）{

ArrayList<Map<String, Object>> list = new ArrayList<Map<String, Object>>();

    resolver = A.getContentResolver();
    Uri musicUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
    Uri imageUri = MediaStore.Audio.Albums.EXTERNAL_CONTENT_URI;

    Map<String, Object> temp = new HashMap<>();
    Bitmap pochette = null;

    Cursor musicCursor = resolver.query(musicUri, new String[]{"_id", "album", "artist", "title", "duration"}, "duration > 0", null, "artist");

    if(Artiste != null) {

        musicCursor = resolver.query(musicUri, new String[]{"_id", "album", "artist", "title", "duration"}, "duration > 0 and artist LIKE '%" + Artiste+"%'", null, "artist");
    }
        while(musicCursor.moveToNext()){

            temp = new HashMap<String, Object>();

            temp.put("title", musicCursor.getString(musicCursor.getColumnIndex("title")));
            temp.put("album", musicCursor.getString(musicCursor.getColumnIndex("album")));
            temp.put("artist", musicCursor.getString(musicCursor.getColumnIndex("artist")));
            temp.put("duration", formateMilliSeccond(musicCursor.getLong(musicCursor.getColumnIndex("duration"))));

            Cursor pochetteCursor = resolver.query(imageUri, new String[] {"_id", "album"}, "album = ?", new String[]{musicCursor.getString(1)}, null);

            if(pochetteCursor != null && pochetteCursor.moveToFirst()){

                long id_de_album = pochetteCursor.getInt(0);

                Uri contentUri = ContentUris.withAppendedId(imageUri, id_de_album);

                System.out.println(contentUri);

                try{
                    pochette = resolver.loadThumbnail(contentUri, new Size( 100, 100), null);
                }
                catch (IOException e){
                    e.printStackTrace();
                }
                temp.put("cover", pochette);
                pochetteCursor.close();
            }

            list.add(temp);
        }
        musicCursor.close();

    return list;
}

我需要使用音乐选择给定的uri，这样我就可以用mediaplayer开始流媒体了

mp = MediaPlayer.create(this, R.raw.nothing); // need something else to put here
    mp.setLooping(true);
    mp.seekTo(0);
    mp.setVolume(1.0f, 1.0f);
    totalTime = mp.getDuration();

谢谢，有些术语是法语的