Hello fellow Android designers,
I am struggling right now to create xml tooltip that would look like the one on this picture:

Unfortunately it seems like a hell of a work. Till now I was only able to create a simple rounded rectangle like that:

Is it actually possible to create such a shape I have presented on the first photo using xml styling or should I try to create it programatically (which will probably take huge amount of time and creating border would be really hard)? Or maybe the simplest solution is the best and I should use partially transparent png image with the shape of my choosing?
Any advice would be much appreciated.
You can draw it using stretchable 9-patch drawable.
You can specify there which parts are fixed (the little knob on the left and corners) and which are stretchable (all other parts)