custom Item change color when pressed drawable layout round button drawable layout recycler view with card view Activity card layout activity layout fragment main activity layout first fragment layout second fragment layout first fragmentActivity second fragmentActivity communicating interface property animation activity anim file tween animation activity( here is an fragment) anim_file view animation drawable activity layerList activity function drawable layout shape drawable drawable layout Preference (title / subscreen / intent ) perference xml list array 1 list_array_2 activity info zahra yousefi jamrani student ID : 97102717