How to implement FileProvider on the share (android 8+)

How do I implement FileProvider in my sharing code? the app is presenting closures in android 8+ read something about the new system of android 8, and some recommended the replacement of the attempt by FileProvider, I already stated in the manifest and I created the XML file but I packed in this part, if someone can help me I will be very grateful.

obs: both context are in red

private void sendWhatsAppAudio(int songIndex){
    InputStream inputStream;
    FileOutputStream fileOutputStream;
    try {
        inputStream = getResources().openRawResource(arrayAdapter.getItem(songIndex).getResId());
        fileOutputStream = new FileOutputStream(
                new File(Environment.getExternalStorageDirectory(), arrayAdapter.getItem(songIndex) +".mp3"));

        byte[] buffer = new byte[1024];
        int length;
        while ((length = inputStream.read(buffer)) > 0) {
            fileOutputStream.write(buffer, 0, length);
        }

        inputStream.close();
        fileOutputStream.close();
    } catch (IOException e) {
        e.printStackTrace();
    }

    Intent intent;
    intent = new Intent(Intent.ACTION_SEND);
    intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
    intent.putExtra(Intent.EXTRA_STREAM,
            FileProvider.getUriForFile(context, context.getApplicationContext().getPackageName() + "/Brasil Memes" + arrayAdapter.getItem(songIndex) +".mp3"));
    intent.setType("audio/*");
    startActivity(createChooser(intent, "Quer compartilhar onde?"));
}