1 - I need create two (sccrens) [fragments || view || ??] in one (Android). Botton sceen user can move up and down by drag and drop method on button.
"in screen 1 will be activity 1 and in scr. 2 will by activity 2. Together must communicating."
http://s8.postimg.org/4shq9vwpx/screen.jpg
2 - Second problem, how correctly show show ZBar (or ZXing) in Screen 1?
Thanks for help.