Android中关于Audio库的知识
16lz
2021-01-23
Android会自动扫描外存(SD卡)中的文件,获取到audio类型的文件,分析文件后,将信息数据存储在 MediaStore.Audio.AudioColumns表内,该表的结构如下:
字段包括如下:
Constants | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
String | ALBUM | The album the audio file is from, if any Type: TEXT | |||||||||
String | ALBUM_ID | The id of the album the audio file is from, if any Type: INTEGER (long) | |||||||||
String | ALBUM_KEY | A non human readable key calculated from the ALBUM, used for searching, sorting and grouping Type: TEXT | |||||||||
String | ARTIST | The artist who created the audio file, if any Type: TEXT | |||||||||
String | ARTIST_ID | The id of the artist who created the audio file, if any Type: INTEGER (long) | |||||||||
String | ARTIST_KEY | A non human readable key calculated from the ARTIST, used for searching, sorting and grouping Type: TEXT | |||||||||
String | BOOKMARK | The position, in ms, playback was at when playback for this file was last stopped. | |||||||||
String | COMPOSER | The composer of the audio file, if any Type: TEXT | |||||||||
String | DURATION | The duration of the audio file, in ms Type: INTEGER (long) | |||||||||
String | IS_ALARM | Non-zero if the audio file may be an alarm Type: INTEGER (boolean) | |||||||||
String | IS_MUSIC | Non-zero if the audio file is music Type: INTEGER (boolean) | |||||||||
String | IS_NOTIFICATION | Non-zero if the audio file may be a notification sound Type: INTEGER (boolean) | |||||||||
String | IS_PODCAST | Non-zero if the audio file is a podcast Type: INTEGER (boolean) | |||||||||
String | IS_RINGTONE | Non-zero if the audio file may be a ringtone Type: INTEGER (boolean) | |||||||||
String | TITLE_KEY | A non human readable key calculated from the TITLE, used for searching, sorting and grouping Type: TEXT | |||||||||
String | TRACK | The track number of this song on the album, if any. | |||||||||
String | YEAR | The year the audio file was recorded, if any Type: INTEGER |
[Collapse] Inherited Constants | ||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
From interfaceandroid.provider.BaseColumns
| ||||||||||||||||||||||||||||||||
From interfaceandroid.provider.MediaStore.MediaColumns
|
类MediaStore.Audio.Media
描述了手机内和SD卡Audio文件的URIFields | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
public static final Uri | EXTERNAL_CONTENT_URI | The content:// style URI for the "primary" external storage volume. | |||||||||
public static final Uri | INTERNAL_CONTENT_URI | The content:// style URI for the internal storage. |
更多相关文章
- Android 10 创建文件失败
- Android_判断文件是否存在并创建代码
- Android 项目打包成apk文件
- Android从远程服务器下载文件到本地sd卡中
- Android文件访问权限问题
- Android jni调用第三方so库和.h文件
- android studio的Gradle一直在sync的办法,不停的下载各种文件