Android 获取本地音乐文件

• 存储音乐文件的model

public class MusicInfo {private long id;private String title;//音乐名称private String data;//音乐文件private String album;//专辑private String artist;//艺人private int duration;//音乐时长private long size;//音乐文件大小public long getId() {return id;}public void setId(long id) {this.id = id;}public String getTitle() {return title;}public void setTitle(String title) {this.title = title;}public String getData() {return data;}public void setData(String data) {this.data = data;}public String getAlbum() {return album;}public void setAlbum(String album) {this.album = album;}public String getArtist() {return artist;}public void setArtist(String artist) {this.artist = artist;}public int getDuration() {return duration;}public void setDuration(int duration) {this.duration = duration;}public long getSize() {return size;}public void setSize(long size) {this.size = size;}
}

• 通过ContentResolver查询数据存储到model

private static final Uri URI = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
private static final String[] MUSIC_PROJECTION = new String[] {MediaStore.Audio.Media._ID,MediaStore.Audio.Media.TITLE,MediaStore.Audio.Media.DATA,MediaStore.Audio.Media.ALBUM,MediaStore.Audio.Media.ARTIST,MediaStore.Audio.Media.DURATION,MediaStore.Audio.Media.SIZE
};
private static final String SELECTION = "mime_type in ('audio/mpeg','audio/x-ms-wma') and bucket_display_name <> 'audio' and is_music > 0 ";
private static final String SORT_ORDER = MediaStore.Audio.Media.DATA;private List<MusicInfo> getMusicInfo() {List<MusicInfo> musicInfos = new ArrayList<>();ContentResolver resolver = getContentResolver();Cursor cursor = resolver.query(URI, MUSIC_PROJECTION, SELECTION, null, SORT_ORDER);if (cursor != null) {while (cursor.moveToNext()) {MusicInfo musicInfo = new MusicInfo();long id = cursor.getLong(cursor.getColumnIndex(MediaStore.Audio.Media._ID));String title = cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Media.TITLE));String data = cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Media.DATA));String album = cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Media.ALBUM));String artist = cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Media.ARTIST));int duration = cursor.getInt(cursor.getColumnIndex(MediaStore.Audio.Media.DURATION));long size = cursor.getLong(cursor.getColumnIndex(MediaStore.Audio.Media.SIZE));musicInfo.setId(id);if (!TextUtils.isEmpty(title)) {musicInfo.setTitle(title);}if (!TextUtils.isEmpty(data)) {musicInfo.setData(data);}if (!TextUtils.isEmpty(album)) {musicInfo.setAlbum(album);}if (!TextUtils.isEmpty(artist)) {musicInfo.setArtist(artist);}if (duration != 0) {musicInfo.setDuration(duration);}if (size != 0) {musicInfo.setSize(size);}musicInfos.add(musicInfo);}cursor.close();}return musicInfos;
}

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