How do I Install processing for android?

its been a while since im trying to solve this problem. I dont really know how to solve it. I`ll try all tutorials i found and the all say the same thing.

All I want to do is to run my processing skecthes on android.

I CAN`T enter ANDROID MODE.

I already try installing the android SDK with all the android API, and the extras and all that stuff. When i try running processing the ANDROID mode doesn`t appeared as an option.

Is there something wrong that im doing with installation?

Thanks everybody !.