解决了。

mui.init();

document.addEventListener("plusready", function() {

if(plus.os.name == "Android") {

var Context = plus.android.importClass("android.content.Context");

var ContentResolver = plus.android.importClass("android.content.ContentResolver");

var Cursor = plus.android.importClass("android.database.Cursor");

var Uri = plus.android.importClass("android.net.Uri");

var MediaStore = plus.android.importClass("android.provider.MediaStore");

var main = plus.android.runtimeMainActivity();

var list = document.getElementById("list");

var li;

var context = main;

var Uri = new Uri();

Uri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;

var resolver = new ContentResolver();

resolver = context.getContentResolver();

var c = new Cursor();

c =resolver.query(Uri, null, null, null, null);

c.moveToFirst();

if(c != null) {

while(c.moveToNext()) {

//扫描本地文件，得到歌曲的相关信息

var music_name = c.getString(c.getColumnIndex(MediaStore.Audio.Media.TITLE));

var music_singer = c.getString(c.getColumnIndex(MediaStore.Audio.Media.ARTIST));

var music_time = c.getString(c.getColumnIndex(MediaStore.Audio.Media.DURATION));

var music_path = c.getString(c.getColumnIndex(MediaStore.Audio.Media.DATA));

li = document.createElement('li');

li.className = "mui-table-view-cell mui-media";

li.setAttribute('name', music_name);

li.setAttribute('data-type', 'File');

li.innerHTML = '' +

'' +

'

';

list.appendChild(li);

}

}

c.close();

}

}, false);