Re: How long did Nolans Batman actually fight crime?(SPOILERS)
While it's strange that he rebuilt the batcave, I'm fairly convinced that Bruce has not been Batman since the end of TDK. Although they do leave things kind of ambiguous.
The Dark Knight Weapons manual states that Bruce was Batman for 5 years before changing suits.
While some things don't add up other things do i.e Harvey and Rachel wanting to get married. Obviously they had to have known each other for a couple of years to feel that way about each other.
Gordon's kids are a lot older in the TDK then they were in BB.
Also in TDKR during Bruce's dream Ras tells him "You spent years fighting decadence in Gotham yada yada."
The only thing that made me things TDK and BB were sort of close together was the Jokers "A year ago" line. But then again it could have only been in the last year that Batman has really broken the mobs back. Also the fact that Bruce is still living in the penthouse (How long does it take to rebuild a mansion?)
All of this makes me feel more satisfied about Batman's career in these films though of course it makes me wish I saw more of it lol.
5 years is a realistic amount of time for Bruce to be Batman and do the amount of damage to his body as seen in TDKR.
Don't know what the point of this post was but I hope you all enjoyed it.