Best Way to develope android applications?

This is my first post here.i need to know which is the best way to do android application.. I have already working with unity3d for games.now i need to develope some applications in this platform.

i have tried with "ECLIPSE" with ADT plugin.Its taking too much of time to open and install applications in EMULATOR.i'm sitting more than two hours behind my system.still the emulator is not opening,t开发者_如何学编程hats why am getting worry about this and asking any other solution for this??

if you know means help me guys...

Thanks for advance.

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The fastest way IMHO, it is developing on the real device. But anyway, emulator is needed to perform some checking in different environment (API level, screen density).