I understand what you say, but that's not the point
. I certainly didn't be clear in my explanation. Your point is to differentiate circle an line.
In fact, the onDraw() clear the caneva and draw my new form. I'd like it doesn't clear my caneva.
I search in a lot of function in View. I've tryed to add view by view in my layout. Nothing work.
really thanks for your time. I'll continu to try tomorrow.