TextView setText overlays previous formatting on textView

Question

This is my textView

InputStream is = getAssets().open(readFromFile);
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
String line = reader.readLine();
arabicFont =Typeface.createFromAsset(getAssets(),"hactyp.ttf");
tv.setTypeface(arabicFont);
SpannableStringBuilder ssb = new SpannableStringBuilder(message);
ssb.setSpan(new UnderlineSpan(),0,message.length(),0);
tv.setText(ssb);
tv.setMovementMethod(new ScrollingMovementMethod());
while(line != null) {
    if(message.equals(line)) {
        while(!("end".equals(line))) {
            line = reader.readLine();
            tv.setText(tv.getText() +" \n" + line);
        }
    }
    line = reader.readLine();
}
tv.setTextSize(24);
is.close();
}

Formatting done by span is getting overlayed by tv.setText(tv.getText() +" \\n" + line); Since there is a singleText view. Also since i am reading from a text file line by line, and appending to textView till i recieve a token, is their any better way to apply spanning in this scenario ?

Answer 1

You can't pass the SpannableStringBuilder directly to tv.setText(); You have to return the String from the buffer using toString() like this:

tv.setText(ssb.toString());

You also have to use toString() when calling getText() on a TextView. So you would call that like this:

tv.getText().toString()