cocoa-touch - 在特定的小时和分钟为今天创建NSDate

Question

如何创建今天日期和小时，分钟和秒分别为5、0和0的NSDate？即日期将是07/02/2010 05:00:00

Answer 1

//Gives us the current date
NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSDateComponents *components = [gregorian components:NSYearCalendarUnit | NSMonthCalendarUnit |  NSDayCalendarUnit fromDate:[NSDate date]];
[components setHour:5];
NSDate * date = [gregorian dateFromComponents:components];
[gregorian release];

遵循这些原则可以解决问题。