このコード
NSDateComponents *component = [[NSDateComponents alloc] init];
NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
[component setMonth:1];
[component setYear:2013];
[component setDay:1];
currentMonth = [gregorian dateFromComponents:component];
NSLog(@"Date in MonthView %@ ",currentMonth);
私に次の日付を与える
Date in MonthView 2012-12-31 23:00:00 +0000
なんで?月の範囲は 0 から 11 になるはずですか?