android - How can I select a word specified in textView -

i have text in textview , want phrases note in text select them , change color red color. how can this? there method this?

try

string text = "some text in text view."; string searchtext = "the"; int startpos = -1, endpos = -1;  if(text.tolowercase().contains(searchtext.tolowercase())){    startpos = text.tolowercase().indexof(searchtext.tolowercase());    endpos = startpos + searchtext.length();    spannable spantext = spannable.factory.getinstance().newspannable(text);    if (startpos != -1){       spantext.setspan(new foregroundcolorspan(color.red), startpos, endpos, spannable.span_exclusive_exclusive);       yourtextview.settext(spantext);    } }