android - How to make an image draggable inside Imageview? -

is possible, have done close this? saw behaviour in ios app , need reproduce it, image full size on x axis , can move , down through y axis inside imageview, tried doing imageview inside framelayout without success, image cropped max size of imageview relative parent (framelayout). welcome.

i guess write own class. intercept touch events, monitor vertical offset , redraw image vertical offset.