这是音乐播放器光标;它的工作原理很好,它显示了从sdcard到listview的所有歌曲,但是我只想要特定的文件夹,如何在查询时添加自定义文件夹路径?
musicAdapter = new RecordPlayerAdapter(this);
Cursor musicCursor = getContentResolver().query(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, null, null, null, null);
if (musicCursor != null && musicCursor.moveToFirst()) {
do {
musicAdapter.add(new RecordPlayerBridge(
musicCursor.getString(musicCursor.getColumnIndex(MediaStore.Audio.Media.TITLE)),
musicCursor.getLong(musicCursor.getColumnIndex(MediaStore.Audio.Media.DURATION)),
musicCursor.getString(musicCursor.getColumnIndex(MediaStore.Audio.Media.DATA))
));
} while (musicCursor.moveToNext());
}
答案 0 :(得分:0)
您需要添加所需的文件夹作为查询参数
代码:
const config = new MatSnackBarConfig();
config.panelClass = ['message-position'];
let snackBarRef = this._matSnackBar.openFromComponent(SnackbarMessageComponent, config);
::ng-deep .message-position {
position: fixed;
left: 50%;
top: 50%;
transform: translate3d(-50%,0,0) !important;
}
希望它能解决您的问题。