Android : Change Variables From Different Classes?

Jun 6, 2010

Before I delve into it, I'm very new to Android and I have just started learning Java last month. I've hit bumps while trying to develop my first simple app. Most of these hurdles were jumped thanks to random tutorials online. MY CODE IS VERY MESSY. Any tips are appreciated.

The question above is quite broad, but this is what I want to do: It's a essentially a blood alcohol content calculator / drink keeper-tracker. Basic layout: http://i.imgur.com/JGuh7.jpg

The buttons along the bottom are just regular buttons, not ImageButtons (had problems with that) Here's some example code ..

It outputs the following to the text view: "Your BAC is -0.017". This is the Bac value for if StandardDrinks was still 0, so obviously there is some problem communicating between the classes.

The other elements of the formula (weight, time spent drinking, and the alcohol %'s and such) are variables because I will ultimately allow the user to change those values in the settings.

I've heard around the water cooler that global variables are not good programming style, but this is the closest I've come to getting it to work..

Android : Change variables from different classes?


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CODE:..........

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