I actually just recently set this up with Tasker because all the other
"sms popup" apps seemed screwy. Plus, why have an additional app when
Tasker does just about everything?
Set up a "Received Text" context...with a Task called "SMS
Popup"....in the "SMS Popup" task i have it execute "Popup Task
Names", not a regular "Popup".
In the "Popup Task Names" task, I put the Text entry as %SMSRN %SMSRT
%SMSRB (Sender Name, Time, Text Body). Below that set up a Task called
"Reply" (you'll have to set up this task separately in the main
screen). My "Reply" task consists of "Compose SMS" with the number
being %SMSRF (the sender of the most recent text). It opens up the
Messaging app, ready to respond to the last text.
When you get a text it should popup with the Name, Time, Text...and a
button that says "Reply".
Hopefully this helps. I have additional bells and whistles that go
along with that, but I think that's the core of what you are looking
for.
TIM