列出所有音乐MediaStore与路径 [英] List all music in MediaStore with the PATHs

问题描述

好了，所以我一直在这个项目上了几天现在我的大部分时间一直致力于如何列出所有的音乐列表视图或其他设备上，我已经寻找了几连日来，这是我的命。我没有得到如此接近，在一个点上与所有的音乐在一个文件夹的表现，但因为大多数人都会有喜欢的事情artiest和专辑，我需要一种方法来搜索的MP3或音乐文件夹的子文件夹的子

Ok so I've been working on this project for a few days now and most of my time has been working out how to list all the music on a device in a LIST VIEW or something else, I have searched for a few days now and this is killing me. I did get so close at one point with all the music in one folder showing, though since most people will have sub folders for things like artiest and albums I need a way to search sub folders for MP3s or music files.

下面是我迄今为止的音乐系列：

Here is what I have so far for Music collection:

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"));
    }
}

}

由于任何人谁可以提供帮助。 ：）

Thanks to anyone who can help. :)

推荐答案

您可以使用此列出所有的音乐文件code

//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));
}

我还没有尝试过这种code，但它似乎是正确的。你会在正确的轨道这一点。

I have not tried this code, but it seems correct. You'll be on the right track with that.

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