Android programming method to get SDcard music files _android

An example of this article describes the way Android programming gets sdcard music files. Share to everyone for your reference, specific as follows:

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Cursor query (Uri uri, string[] projection, string selection, string[] Selectionargs, string sortOrder);

Uri: Indicates the name of the database to query, plus the name of the table, from Mediastore we can find the parameters of the corresponding information, please refer to the development documentation.

Projection: Specifies which columns in the Query database table, and the corresponding information is included in the returned cursor. NULL returns all the information.

Selection: Specifying query criteria

Selectionargs: Is there a parameter in selection? The symbol here is that the actual value can be substituted for this question mark. What if selection this? , then this string array can be null.

SortOrder: Specify the order in which query results are ordered

The following command returns information about all the music files on the external storage card:

Cursor Cursor = Context.getcontentresolver (). Query ( 
        MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, NULL, NULL, NULL, 
        MediaStore.Audio.Media.DEFAULT_SORT_ORDER); 

Song id:mediastore.audio.media._id

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Int id = cursor.getint (cursor.getcolumnindexorthrow (mediastore.audio.media._id));

Name of Song: MediaStore.Audio.Media.TITLE

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String Tilte = cursor.getstring (Cursor.getcolumnindexorthrow (MediaStore.Audio.Media.TITLE));

Album Name of Song: MediaStore.Audio.Media.ALBUM

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String album = cursor.getstring (Cursor.getcolumnindexorthrow (MediaStore.Audio.Media.ALBUM));

Singer name of the song: MediaStore.Audio.Media.ARTIST

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String artist = cursor.getstring (Cursor.getcolumnindexorthrow (MediaStore.Audio.Media.ARTIST));

Path to the song file: MediaStore.Audio.Media.DATA

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String url = cursor.getstring (Cursor.getcolumnindexorthrow (MediaStore.Audio.Media.DATA));

Total playback length of the song: MediaStore.Audio.Media.DURATION

Copy Code code as follows:

Int Duration = Cursor.getint (Cursor.getcolumnindexorthrow (MediaStore.Audio.Media.DURATION));

Size of song file: MediaStore.Audio.Media.SIZE

Copy Code code as follows:

Int size = Cursor.getlong (Cursor.getcolumnindexorthrow (MediaStore.Audio.Media.SIZE));

I hope this article will help you with the Android program.