如何替换TextView上的部分文本？

I have a text in a textview which says "you have 60 seconds left in the final lap".I am planning to do a countdown starting from 60 and just want to replace the number portion of the textview without refreshing the entire thing.I know I will be using the CountDownTimer to achieve the countdown but how do I change the text partially. Another way of doing this would be having three textviews to show the static text and use one of them to show the countdown text.Is there a cleaner way of doing this!I have a text in a textview which says "you hav