Load UTF8 encoded Html file from assets to TextView

I have an HTML file in a resource folder that is encoded in UTF8 (contains Persian characters), I want to read this file and load it into a TextView.I have read a lot of messages, like load a utf-8 text file , load an HTML file into a TextView , read UTF8 text file from res / raw and write this code:

try{
        InputStream inputStream = getResources().getAssets().open("htmls/salamati.html");
        // I also try "UTF-8" but none of them worked
        BufferedReader r = new BufferedReader(new InputStreamReader(inputStream,"UTF8"));
        StringBuilder total = new StringBuilder();
        String html;
        while ((html = r.readLine()) != null) {
            total.append(html);
        }
        // total contains incorrect characters
        textView.setText(Html.fromHtml(total.toString()));
    }
    catch (IOException exception)
    {
        textView.setText("Failed loading HTML.");
    }

      

        
        
        
      

    

But it is showing the wrong characters! I am also trying to convert total.toString () to a UTF8 string array and then add it to the textView, but it doesn't work either.

textView.setText(Html.fromHtml(new String(total.toString().getBytes("ISO-8859-1"), "UTF-8")));

      

        
        
        
      

    

No problem with textView or emulator because when I load HTML from database it renders utf8 characters correctly! So what should I do?