Making your application network-aware in real time. To keep track of network changes asynchronously, your application needs to register for a callback. When a network or network property change occurs your callback will be invoked.
1 You can simply lay your vinyl floor on top of the subfloor. Just unroll, cut the floor to size and itâs done â easy!  Medium room ( < 25m2) Semi-loose installation will do. Use double faced duct tape around the room to secure the flooring.
If you are planning to lay vinyl sheet, tiles or even laminate, and your subfloor is old floorboards, it is more than likely that the floor will need to be levelled. The easiest way to do this is to cover the boards with a thin layer (3mm â 12mm) of hardboard, giving yourself a smooth, flat surface to work on.