从MediaStore获取音频文件路径或URI [英] Getting audio file path or URI from mediastore

问题描述

我正在制作一个将设备上所有歌曲都列出到屏幕上的应用程序，然后单击它们会打开一个共享意图，其中可以通过不同的方法(例如蓝牙，WhatsApp等)在各种设备之间共享歌曲/音频文件. 但是我无法从媒体存储中获取音频文件的文件路径或位置.

I am making an application which lists all the songs on the device onto the screen and clicking on them opens a sharing intent where the songs / audio file can be shared across various devices through different method like Bluetooth, WhatsApp etc. But I am not able to get the file path or location of the audio file from the mediastore.

这就是我获取歌曲的方式-

This is how I am getting my songs-

public void getSongList() {
    //retrieve song info
    ContentResolver musicResolver = getActivity().getContentResolver();
    Uri musicUri = android.provider.MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
    Cursor musicCursor = musicResolver.query(musicUri, null, null, null, null);
    //iterate over results if valid
    if(musicCursor!=null && musicCursor.moveToFirst()){
        //get columns
        int titleColumn = musicCursor.getColumnIndex
                (android.provider.MediaStore.Audio.Media.TITLE);
        int idColumn = musicCursor.getColumnIndex
                (android.provider.MediaStore.Audio.Media._ID);
        int artistColumn = musicCursor.getColumnIndex
                (android.provider.MediaStore.Audio.Media.ARTIST);
        int albumId = musicCursor.getColumnIndex
                (MediaStore.Audio.Media.ALBUM_ID);
        int data= musicCursor.getColumnIndex(MediaStore.Audio.Media.DATA);
        int albumkey=musicCursor.getColumnIndex(MediaStore.Audio.Media.ALBUM_KEY);
        //add songs to list
        do {
            long thisId = musicCursor.getLong(idColumn);
            String thisTitle = musicCursor.getString(titleColumn);
            String thisArtist = musicCursor.getString(artistColumn);
            long thisalbumId = musicCursor.getLong(albumId);
            String thisdata= musicCursor.getString(data);
            String AlbumKey = musicCursor.getString(albumkey);
            tempSongList.add(new Song(thisId, thisTitle, thisArtist, thisalbumId, thisdata, AlbumKey));

        }
        while (musicCursor.moveToNext());

    }
}

我将所有歌曲存储在以下Song类的数组列表中-

I am storing all songs in the arraylist of a class Song which is below-

package com.musicplayer;

import android.content.ContentUris;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.Parcel;
import android.os.ParcelFileDescriptor;
import android.os.Parcelable;

import java.io.FileDescriptor;
import java.io.FileNotFoundException;
import java.io.Serializable;

/**
 * Created by swappnil on 19-06-2015.
 */
public class Song  implements Parcelable {
private long id;
private String title;
private String artist, data, albumkey;
private long alid;

public Song(long songID, String songTitle, String songArtist, long albumID, String thisdata, String AlbumKey) {
    id=songID;
    title=songTitle;
    artist=songArtist;
    alid=albumID;
    data=thisdata;
    albumkey=AlbumKey;

}
public Song(){

}
public long getID(){return id;}
public String getTitle(){return title;}
public String getArtist(){return artist;}
public long getAlbumID(){return alid;}
public String getPath(){return data;}
public String getAlbumKey(){return albumkey;}

@Override
public int describeContents() {
    return 0;
}

@Override
public void writeToParcel(Parcel dest, int flags) {
    dest.writeString(title);
    dest.writeString(artist);
    dest.writeLong(alid);
    dest.writeLong(id);
    dest.writeString(data);
    dest.writeString(albumkey);
}
public static final Parcelable.Creator<Song> CREATOR = new Parcelable.Creator<Song>() {
    public Song createFromParcel(Parcel in) {
        Song song = new Song();
        song.title = in.readString();
        song.artist = in.readString();
        song.alid = in.readLong();
        song.id = in.readLong();
        song.data= in.readString();
        song.albumkey=in.readString();
        return song;
    }

    public Song[] newArray(int size) {
        return new Song[size];
    }
};
}

现在，当用户点击某些歌曲时，我正在分享的歌曲就是这个

Now when the user clicks on certain song what I am doing to share it is this-

String sharePath = currSong.getPath();
    Uri uri = Uri.parse(sharePath);
    Intent share = new Intent(Intent.ACTION_SEND);
    share.setType("audio/*");
    share.putExtra(Intent.EXTRA_STREAM, uri);
    context.startActivity(Intent.createChooser(share, "Share Sound File"));

currSong是用户单击的歌曲.我在哪里错了.

Where currSong is the song on which user has clicked. Where am I wrong.

推荐答案

所以我找出了代码中的问题，除uri生成部分外，其他所有内容都是正确的，我必须添加"file:///"，并且该方法有效. 所以我替换了

So I Figured out the problem in the code, Everything was correct except the uri generation part, I had to add "file:///" and it worked. So I Replaced

Uri uri= Uri.parse(song.getPath());

使用

Uri uri= Uri.parse("file:///"+song.getPath());

它就像魅力一样起作用！ 希望其他人会发现这个有用！

and it worked like charm! Hope someone else will find this useful!

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