To make a strike in your TextView in Android use the setPaintFlags like this:
TextView tv=(TextView) v.findViewById(android.R.id.text1);
tv.setPaintFlags(tv.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG);
If you’re using Html.fromHtml to set the text you can’t unfortunately use the <strike> as this is not supported for Android at this moment (in Jelly Bean).