android-从音频文件Uri获取专辑封面
作者:互联网
我正在尝试从音频文件Uri中获取专辑封面,这是我的代码:
// uri is the audio file uri
public static Bitmap getSongCoverArt(Context context, Uri uri){
Bitmap songCoverArt = null;
String[] projections = {MediaStore.Audio.Media.ALBUM_ID};
Cursor cursor = null;
try {
cursor = context.getContentResolver().query(uri, projections, null, null, null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Audio.Media.ALBUM_ID);
cursor.moveToFirst();
Uri songCover = Uri.parse("content://media/external/audio/albumart");
Uri uriSongCover = ContentUris.withAppendedId(songCover, column_index);
Log.d(TAG, uriSongCover.toString());
ContentResolver res = context.getContentResolver();
try {
InputStream in = res.openInputStream(uriSongCover);
songCoverArt = BitmapFactory.decodeStream(in);
}catch (FileNotFoundException e){
Log.e(TAG, e.getMessage());
}
}finally {
if(cursor != null){
cursor.close();
}
}
return songCoverArt;
}
此函数始终返回“对于content:// media / external / audio / albumart / 0没有条目”
解决方法:
我认为您的问题出在appendId
Uri songCover = Uri.parse("content://media/external/audio/albumart");
Uri uriSongCover = ContentUris.withAppendedId(songCover, column_index)
用专辑的Long _id代替column_index,而不是_id为0的列索引.
album_id = c.getLong(c.getColumnIndex(MediaStore.Audio.Albums._ID));
c是我的光标
标签:mediastore,albumart,audio,android 来源: https://codeday.me/bug/20191121/2049360.html