使用PATH列出MediaStore中的所有音乐

Question

好的,我已经在这个项目上工作了几天,我的大部分时间都在研究如何在列表视图或其他内容列出设备上的所有音乐,我已经搜索了几天了,这是在杀我.我确实在一个文件夹中显示了所有音乐,但是因为大多数人都会有像艺术家和专辑这样的子文件夹,所以我需要一种方法来搜索子文件夹中的MP3或音乐文件.

这是我到目前为止音乐收藏的内容:

package com.androidhive.musicplayer;

import java.io.File;
import java.io.FilenameFilter;
import java.util.ArrayList;
import java.util.HashMap;

import android.provider.MediaStore;

public class SongsManager {
// SDCard Path
final String MEDIA_PATH = new String(MediaStore.Audio.Media.getContentUri("external").toString());
private ArrayList<HashMap<String, String>> songsList = new ArrayList<HashMap<String, String>>();

// Constructor
public SongsManager(){

}

/**
 * Function to read all mp3 files from sdcard
 * and store the details in ArrayList
 * */
public ArrayList<HashMap<String, String>> getPlayList(){
    File home = new File(MEDIA_PATH);

    if (home.listFiles(new FileExtensionFilter()).length > 0) {
        for (File file : home.listFiles(new FileExtensionFilter())) {
            HashMap<String, String> song = new HashMap<String, String>();
            song.put("songTitle", file.getName().substring(0, (file.getName().length() - 4)));
            song.put("songPath", file.getPath());

            // Adding each song to SongList
            songsList.add(song);
        }
    }
    // return songs list array
    return songsList;
}

/**
 * Class to filter files which are having .mp3 extension
 * */
class FileExtensionFilter implements FilenameFilter {
    public boolean accept(File dir, String name) {
        return (name.endsWith(".mp3") || name.endsWith(".MP3"));
    }
}

}

感谢任何能提供帮助的人.:)

Answer 1

虽然这篇文章很老,但对于像我这样的其他人来说,想要创建一个带有文件路径的音乐列表,我在这里添加了解决方案.MediaStore.Audio.Media.DATA列实际上包含媒体文件路径.您可以使用以下代码段获取必要的信息:

ContentResolver cr = getActivity().getContentResolver();

Uri uri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
String selection = MediaStore.Audio.Media.IS_MUSIC + "!= 0";
String sortOrder = MediaStore.Audio.Media.TITLE + " ASC";
Cursor cur = cr.query(uri, null, selection, null, sortOrder);
int count = 0;

if(cur != null)
{
    count = cur.getCount();

    if(count > 0)
    {
        while(cur.moveToNext())
        {
            String data = cur.getString(cur.getColumnIndex(MediaStore.Audio.Media.DATA));
            // Add code to get more column here

            // Save to your list here
        }

    }
}

cur.close();

Answer 2

您可以使用此代码列出所有音乐文件

//Some audio may be explicitly marked as not being music
String selection = MediaStore.Audio.Media.IS_MUSIC + " != 0";

String[] projection = {
        MediaStore.Audio.Media._ID,
        MediaStore.Audio.Media.ARTIST,
        MediaStore.Audio.Media.TITLE,
        MediaStore.Audio.Media.DATA,
        MediaStore.Audio.Media.DISPLAY_NAME,
        MediaStore.Audio.Media.DURATION
};

cursor = this.managedQuery(
        MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
        projection,
        selection,
        null,
        null);

private List<String> songs = new ArrayList<String>();
while(cursor.moveToNext()) {
        songs.add(cursor.getString(0) + "||" 
                    + cursor.getString(1) + "||" 
                    + cursor.getString(2) + "||"
                    + cursor.getString(3) + "||"
                    + cursor.getString(4) + "||" 
                    + cursor.getString(5));
}

我没有尝试过这段代码,但似乎是正确的.你将走上正轨.