How to change the style of letters depending on the displayed letters in android

Question

I would like to where there is A, B, C, D, E .... change the style letters on a bold and change the background. is a possibility because I was trying to (commented out lines

Answer 1

Spannable wordtoSpan = new SpannableString("A");        

wordtoSpan.setSpan(new ForegroundColorSpan(Color.BLUE), 15, 30, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

textView.setText(wordtoSpan);