u have to use zinc,calcium and the rest on a Pokemon u whant to evolve after that lvl. him up.
make the Pokemon hold the SOOTHE BELL(to get it check http://bulbapedia.bulbagarden.net/wiki/Soothe_Bell#Soothe_Bell)..
and then depending on how many heart of your Pokemon has when you hold it on the profetch). It takes 25 mins from no heart to one heart if you ride a bicycle as fast as you could back and forth, another 25mins from one heart to two. And two heart to two beating heart takes about 36 mins.When it has two beating hearts, the next time it levels up, it will evolve. At least that's how I get my crobat and Blissey. Good luck!
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Yes, it will evolve through happiness.
Golbat doesn't evolve in pokemon red, blue or yellow. Generation II, and onward, if Golbat's happiness is high enough it will evolve into Crobat.
You'll have to have it have high Happiness in order to evolve it.
You give it lots of happiness, then it will evolve into Swoobat.
For a togepi to evolve you need to give it 220 happiness