Joda：如何在两个日期之间获得数月和数日

I think I'm missing some subtlety here because everything I'm reading says this should work. I need to get the months and days between two dates in Android. That is to say, how many whole months plus any additional days. I need this as numeric output, not a printed string. Here's what I'm doing, using Joda:I think I'm missing some subtlety here because