I am using this code to save the data in the file. The data that is being saved in the file is ????????. Please help me with suitable solution.
File gpxfile = new File(activate, "activate.csv");
OutputStreamWriter writer = new OutputStreamWriter(new FileOutputStream(gpxfile),"UTF-8");
writer.write(merchantId);
It works for me. Make sure
merchantIdcontains validHindi. For instance: