Honestly, you're not doing a very good job of communicating.

Regardless, it may be that while the wheel was off the bike, you squeezed the brake lever, which will bring the brake pads together to a point that you will either not be able to get the wheel back on the bike at all or it will be such a tight fit between the pads that the wheel will not spin. The solution, if this is what has happened, is to take the wheel back off the bike and use a large, flathead screwdriver to force the pads back apart. Move them as far as they will go; this will put them in the proper position. Re-install the wheel, and if the brakes were adjusted correctly to begin with, all will be well.