Question

我正在尝试通过以下代码从手机内存中删除歌曲文件：

private void deleteSongs(){
    String path = song.getPath();
    File songFile = new File(path);

    Log.d(TAG, "Song exists: " + songFile.exists());
    Log.d(TAG, "Song is directory: " + songFile.isDirectory());
    Log.d(TAG, "Song path: " + songFile.getPath());
    Log.d(TAG, "Song name: " + songFile.getName());

    if(songFile.delete())
        Log.d(TAG, "Song deleted successfully by File.delete()");
    else{
        Log.d(TAG, "Can't delete file by File.delete()");
        if(getActivity().deleteFile(songFile.getName()))
            Log.d(TAG, "Song deleted successfully by Activity.deleteFile()");
        else
            Log.d(TAG, "Can't delete file by Activity.deleteFile()");
    }
}

但是它不起作用。 Logcat说：

D/DeleteSongDialog: Song exists: true
D/DeleteSongDialog: Song is directory: false
D/DeleteSongDialog: Song path: /storage/emulated/0/Download/2 sekundowy film-20.m4a
D/DeleteSongDialog: Song name: 2 sekundowy film-20.m4a
D/DeleteSongDialog: Can't delete file by File.delete()
D/DeleteSongDialog: Can't delete file by Activity.deleteFile()

带有FileProvider的solution在Android> = 8.0上无效，但在Android 7.0上有效。也许有人知道我应该更改我的@CodeToLife代码还是什么？

谢谢。

Answer 1

将getActivity().deleteFile(songFile.getName())替换为songFile.delete()。另外，请确保您具有WRITE_EXTERNAL_STORAGE权限，包括在Android 6.0+上的运行时请求该权限。

Answer 2

@CommonsWare帮助我找到了解决方案。我必须在以下位置更改此代码：

Uri uri = ContentUris.withAppendedId(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, song.getId());
getActivity().getContentResolver().delete(uri, null, null);

希望它也会对您有帮助

Android 8.1-为什么我不能删除歌曲文件？

2 个答案: