转换时间戳 - IPhone

Question

我试图找出如何将时间戳日期和时间（格式 - 2012-06-14T13：15：21Z）转换为在屏幕上显示，如1小时前＆＃39; /＆＃39; 2天前＆＃39; /＆＃39; 2秒前＆＃39;有谁可以帮我这个？

Answer 1

试试这个：

NSCalendar *cal = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
[cal setTimeZone:[NSTimeZone timeZoneForSecondsFromGMT:0]];
NSDate *date1 = yourDate;
NSDate *date2 = [NSDate date];//Current Date
unsigned int unitFlags = NSDayCalendarUnit|NSYearCalendarUnit|NSMonthCalendarUnit|NSHourCalendarUnit|NSMinuteCalendarUnit|NSSecondCalendarUnit;                   
NSDateComponents *diffComps = [cal components:unitFlags fromDate:date2 toDate:date1 options:0];
[diffComps month] //gives you month
[diffComps day] //gives you day
[diffComps year] // gives you year
[cal release];