Whatsapp Message Layout - How to get time-view in the same row

I was wondering how WhatsApp handles the time shown in every message.

For those who don't know:

1. If the message is very short, the text and time are in the same row.
2. If the message is long, the time is in the bottom right corner - the text wrapped around it.

With a RelativeLayout and toLeftOf I would get 1) but not 2) as previous lines would be "cut off" at the position of the time view. Same behaviour If i use a LinearLayout.

So I tried to use a FrameLayout or a RelativeLayout without any connection between text and time.

However, if the text is as long as the message-view is big, both views would overlap. If I put blank characters to my message I wouldn't have the time on the right.

Do they really have some kind of text-wrapping-lib for this or is it possible to do only with layouts?