hour = calendar.get(Calendar.AM_PM);    改成这样就能行了

遇到了同样的问题.

Cant getting your exact problem but if you seen this then you must getting that, you should use "a" in date format for dealing with "AM / PM"

And be sure, when you are using "a" for getting am/pm, your hours format should be in "hh" (i.e 12 hour foramat) not in "HH" (i.e 24 hour format). Let us know if you need more help..

你好，请问你解决了吗？我也遇到这个问题。