Save .txt file on Android Q

Question

I was trying to save text file using below code

try {
                FileOutputStream fos = new FileOutputStream(TXT_FILE_NAME, true);

                FileWriter fWriter;

                try {
                    fWriter = new FileWriter(fos.getFD());
                    fWriter.write(binding.tvExtractedResult.getText().toString());
                    fWriter.close();
                } catch (Exception e) {
                    e.printStackTrace();
                } finally {
                    fos.getFD().sync();
                    fos.close();
                    Toast.makeText(this, "File Saved Successfully", Toast.LENGTH_LONG).show();
                }
            } catch (Exception e) {
                Toast.makeText(this, "Error while saving file", Toast.LENGTH_LONG).show();
                e.printStackTrace();
            }

But the problem is this code doesn't work with Android Q. After this I tried to search the solution and I did this

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
            ContentValues myContentValues = new ContentValues();
            myContentValues.put(MediaStore.MediaColumns.DISPLAY_NAME, TXT_FILE_NAME);
            String myFolder = "Download/MY_PROJECT";
            myContentValues.put(MediaStore.MediaColumns.RELATIVE_PATH, myFolder);
            myContentValues.put(MediaStore.MediaColumns.MIME_TYPE, "text/plain");
            myContentValues.put(MediaStore.MediaColumns.IS_PENDING, 1);

            Uri extVolumeUri = MediaStore.Files.getContentUri(MediaStore.VOLUME_EXTERNAL);

            ContentResolver contentResolver = getContentResolver();
            Uri uri = contentResolver.insert(extVolumeUri, myContentValues);

            if (uri == null) {
                Log.e(TAG, "uri is null");
                return;
            }
            Log.e(TAG, "uri=" + uri);

            try {
                FileOutputStream fos = new FileOutputStream(new File(uri.toString()));

                fos.write(binding.tvExtractedResult.getText().toString().getBytes());
                fos.close();
            } catch (Exception e) {
                Log.e(TAG, "error occurred" + e.getMessage());
                e.printStackTrace();
            } finally {
                myContentValues.clear();
                myContentValues.put(MediaStore.MediaColumns.IS_PENDING, 0);
                contentResolver.update(uri, myContentValues, null, null);
            }

        }

In above code I'm getting uri == null

Appreciate your help. Thanks.

Answer 1

Please have a look at this code, it will allow you to save text file below and higher versions of Android Q.

public static void saveFile(Context context, String fileName, String text, String extension) throws IOException{
    OutputStream outputStream;
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {

        ContentValues values = new ContentValues();

        values.put(MediaStore.MediaColumns.DISPLAY_NAME, fileName + extension);   // file name
        values.put(MediaStore.MediaColumns.MIME_TYPE, "text/plain");
        values.put(MediaStore.MediaColumns.RELATIVE_PATH, DIRECTORY);

        Uri extVolumeUri = MediaStore.Files.getContentUri("external");
        Uri fileUri = context.getContentResolver().insert(extVolumeUri, values);

        outputStream = context.getContentResolver().openOutputStream(fileUri);
    }
    else {
        String path = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOCUMENTS).toString() + FOLDER_NAME;
        File file = new File(path, fileName + extension);
        Log.d(TAG, "saveFile: file path - " + file.getAbsolutePath());
        outputStream = new FileOutputStream(file);
    }

    byte[] bytes = text.getBytes();
    outputStream.write(bytes);
    outputStream.close();
}