Android

Question

我正在尝试删除 mp3 文件。

我的代码：

 String path = songsList.get(position).getData();
 File fdelete = new File(path);
 if (fdelete.exists()) {
     if (fdelete.delete()) {
        DeleteRecursive(fdelete);
        Log.d(TAG, "deleted");
     } else {
        Log.d(TAG, "failed");
     }
 } else {
  Log.d(TAG, "file doesn't exist");
 }

当我最初删除时，它给出了 "deleted" 消息。但是，文件出现并且无法播放。如果再次尝试删除它，它会显示 "file doesn't exist" 消息。

谁能告诉我如何正确删除。

如有任何帮助，我们将不胜感激。谢谢。

Answer 1

最后，我成功地从内部存储和 SD 卡中完全删除了 mp3 文件。

这是代码：（可能对某人有帮助）

 String[] projection = new String[]{BaseColumns._ID, MediaStore.MediaColumns.DATA};
 String selection = BaseColumns._ID + " IN (" + id + ")";

    try {
        final Cursor cursor = context.getContentResolver().query(
                MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, projection, selection,null, null);

       if (cursor != null) {

// remove from the media database

           context.getContentResolver().delete(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,selection, null);

// remove from storage / sdcard

            cursor.moveToFirst();
            while (!cursor.isAfterLast()) {
                final String name = cursor.getString(1);
                try { 
                    final File f = new File(name);
                    if (!f.delete()) {
                        Log.e(TAG, "deleteSong: " + title + " can't be deleted");
                    }
                    cursor.moveToNext();
                } catch (@NonNull final SecurityException ex) {
                    cursor.moveToNext();
                } catch (NullPointerException e) {
                    Log.e(TAG, "Failed to find file " + name);
                }
            }
            cursor.close();
        }
        context.getContentResolver().notifyChange(Uri.parse("content://media"), null);

        Toast.makeText(context, title + " deleted", Toast.LENGTH_SHORT).show();

    } catch (SecurityException ignored) {
    }

Android - 如何从内部存储和 SD 卡中删除 mp3 文件 - Java 代码

Android - How to delete mp3 file from Internal Storage and SD Card - Java Code

mp3

delete-file

android-mediaplayer