MusicBobberライブラリで音楽ファイルを設定するには

Question

私のプロジェクトではMusicBobberライブラリを使用しています。オーディオuriを設定するwikiはsdcardまたはrawです。

私はあなたがこの方法で音楽ファイルを設定することができますアンドロイドmediaplayerに知っている：

MediaPlayer mediaPlayer= MediaPlayer.create(this, R.raw.song); 

が、この特定のライブラリについて全く分かりません。この図書館で働いていた人はいますか？どのように私はそれを曲を演奏するように言うことができますか？ここで

Answer 1

は背景

class MusicLoader extends BaseAsyncTaskLoader<Collection<MusicItem>> { 

private final Uri albumArtUri = Uri.parse("content://media/external/audio/albumart"); 

public MusicLoader(Context context) { 
    super(context); 
} 

@Override 
public Collection<MusicItem> loadInBackground() { 
    String[] projection = new String[]{ 
      MediaStore.Audio.Media.TITLE, 
      MediaStore.Audio.Media.ALBUM, 
      MediaStore.Audio.Media.ALBUM_ID, 
      MediaStore.Audio.Media.ARTIST, 
      MediaStore.Audio.Media.DURATION, 
      MediaStore.Audio.Media.DATA, 
    }; 
    Cursor cursor = getContext().getContentResolver().query(
      MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, 
      projection, 
      MediaStore.Audio.Media.IS_MUSIC + "=1", 
      null, 
      "LOWER(" + MediaStore.Audio.Media.ARTIST + ") ASC, " + 
        "LOWER(" + MediaStore.Audio.Media.ALBUM + ") ASC, " + 
        "LOWER(" + MediaStore.Audio.Media.TITLE + ") ASC" 
    ); 
    if (cursor == null) { 
     return Collections.emptyList(); 
    } 
    List<MusicItem> items = new ArrayList<>(); 
    try { 
     if (cursor.moveToFirst()) { 
      int title = cursor.getColumnIndex(MediaStore.Audio.Media.TITLE); 
      int album = cursor.getColumnIndex(MediaStore.Audio.Media.ALBUM); 
      int artist = cursor.getColumnIndex(MediaStore.Audio.Media.ARTIST); 
      int duration = cursor.getColumnIndex(MediaStore.Audio.Media.DURATION); 
      int albumId = cursor.getColumnIndex(MediaStore.Audio.Media.ALBUM_ID); 
      int data = cursor.getColumnIndex(MediaStore.Audio.Media.DATA); 
      do { 
       MusicItem item = new MusicItem() 
         .title(cursor.getString(title)) 
         .album(cursor.getString(album)) 
         .artist(cursor.getString(artist)) 
         .duration(cursor.getLong(duration)) 
         .albumArtUri(ContentUris.withAppendedId(albumArtUri, cursor.getLong(albumId))) 
         .fileUri(Uri.parse(cursor.getString(data))) 
         ; 
       items.add(item); 
      } while (cursor.moveToNext()); 
     } 
    } finally { 
     cursor.close(); 
    } 
    return items; 
} 
} 

の曲を得るためのサンプルであり、これはあなたがArrayListオブジェクト

class MusicItem implements Parcelable { 
private String title; 
private String album; 
private String artist; 
private long duration; 
private Uri albumArtUri; 
private Uri fileUri; 

public MusicItem title(String title) { 
    this.title = title; 
    return this; 
} 

public MusicItem album(String album) { 
    this.album = album; 
    return this; 
} 

public MusicItem artist(String artist) { 
    this.artist = artist; 
    return this; 
} 

public MusicItem duration(long duration) { 
    this.duration = duration; 
    return this; 
} 

public MusicItem albumArtUri(Uri albumArtUri) { 
    this.albumArtUri = albumArtUri; 
    return this; 
} 

public MusicItem fileUri(Uri fileUri) { 
    this.fileUri = fileUri; 
    return this; 
} 

public String title() { 
    return title; 
} 

public String album() { 
    return album; 
} 

public String artist() { 
    return artist; 
} 

public long duration() { 
    return duration; 
} 

public Uri albumArtUri() { 
    return albumArtUri; 
} 

public Uri fileUri() { 
    return fileUri; 
} 

@Override 
public boolean equals(Object o) { 
    if (this == o) return true; 
    if (o == null || getClass() != o.getClass()) return false; 

    MusicItem item = (MusicItem) o; 

    if (duration != item.duration) return false; 
    if (title != null ? !title.equals(item.title) : item.title != null) return false; 
    if (album != null ? !album.equals(item.album) : item.album != null) return false; 
    if (artist != null ? !artist.equals(item.artist) : item.artist != null) return false; 
    if (albumArtUri != null ? !albumArtUri.equals(item.albumArtUri) : item.albumArtUri != null) 
     return false; 
    return fileUri != null ? fileUri.equals(item.fileUri) : item.fileUri == null; 

} 

@Override 
public int hashCode() { 
    int result = title != null ? title.hashCode() : 0; 
    result = 31 * result + (album != null ? album.hashCode() : 0); 
    result = 31 * result + (artist != null ? artist.hashCode() : 0); 
    result = 31 * result + (int) (duration^(duration >>> 32)); 
    result = 31 * result + (albumArtUri != null ? albumArtUri.hashCode() : 0); 
    result = 31 * result + (fileUri != null ? fileUri.hashCode() : 0); 
    return result; 
} 

@Override 
public String toString() { 
    return "MusicItem{" + 
      "title='" + title + '\'' + 
      ", album='" + album + '\'' + 
      ", artist='" + artist + '\'' + 
      ", duration=" + duration + 
      ", albumArtUri=" + albumArtUri + 
      ", fileUri=" + fileUri + 
      '}'; 
} 


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

@Override 
public void writeToParcel(Parcel dest, int flags) { 
    dest.writeString(this.title); 
    dest.writeString(this.album); 
    dest.writeString(this.artist); 
    dest.writeLong(this.duration); 
    dest.writeParcelable(this.albumArtUri, 0); 
    dest.writeParcelable(this.fileUri, 0); 
} 

public MusicItem() { 
} 

protected MusicItem(Parcel in) { 
    this.title = in.readString(); 
    this.album = in.readString(); 
    this.artist = in.readString(); 
    this.duration = in.readLong(); 
    this.albumArtUri = in.readParcelable(Uri.class.getClassLoader()); 
    this.fileUri = in.readParcelable(Uri.class.getClassLoader()); 
} 

public static final Creator<MusicItem> CREATOR = new Creator<MusicItem>() { 
    public MusicItem createFromParcel(Parcel source) { 
     return new MusicItem(source); 
    } 

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

を使用することができますどのようにあなたがしたくない場合にも、ゲッターとセッターを作ることができています配列リストを渡します。 For more info