我正在使用核心数据来存储我的项目的对象。对象中有一个日期字段。我想检查用于iphone的Tapku日历组件的点击日期。我的对象上的日期格式为
2011-01-10,这是一个本地化的日期。
如何根据tapku日历控件返回的日期检查日期。
答案 0 :(得分:2)
是的,你可以,这就是我做的工作:
关于方法:(NSArray *)calendarMonthView:(TKCalendarMonthView *)monthView marksFromDate:(NSDate *)startDate toDate:(NSDate *)lastDate
警告:确保将NSDate对象转换为无时间和GMT:0日期,以使日期比较工作(以艰难的方式学习......)
这是一些代码......
self.marksArray = [NSMutableArray array];
self.dataDictionary = [NSMutableDictionary dictionary];
NSCalendar *cal = [NSCalendar currentCalendar];
[cal setTimeZone:[NSTimeZone timeZoneForSecondsFromGMT:0]];
NSDateComponents *comp = [cal components:(NSMonthCalendarUnit | NSMinuteCalendarUnit | NSYearCalendarUnit | NSDayCalendarUnit | NSWeekdayCalendarUnit | NSHourCalendarUnit | NSSecondCalendarUnit) fromDate:start];
NSDate *ds = [cal dateFromComponents:comp];
// Init offset components to increment days in the loop by one each time
NSDateComponents *offsetComponents = [[NSDateComponents alloc] init];
[offsetComponents setDay:1];
while (YES) {
// Is the date beyond the last date? If so, exit the loop.
// NSOrderedDescending = the left value is greater than the right
if ([ds compare:end] == NSOrderedDescending) {
break;
}
NSIndexSet *indexes = [arrayWithObjectsFromCoreData indexesOfObjectsPassingTest:
^BOOL (id el, NSUInteger i, BOOL *stop) {
NSDate *upd = [(YOUR_ENTINY *)el updated];
NSDate *day=[self midnightUTC:upd];
if([ds isSameDay:day]){
return TRUE;
}
return FALSE;
}];
if (indexes.count>0) {
[self.marksArray addObject:[NSNumber numberWithBool:YES]];
[self.dataDictionary setObject:[wods objectsAtIndexes:indexes] forKey:ds];
}else {
//no wods in this date
[self.dataArray addObject:[NSNumber numberWithBool:NO]];
}
// Increment day using offset components (ie, 1 day in this instance)
ds = [cal dateByAddingComponents:offsetComponents toDate:ds options:0];
}
[offsetComponents release];
midnightUTC方法可以在这里找到: http://www.voidasterisk.org/post/4209842795/how-to-calculate-nsdate-of-midnight-in-ios
答案 1 :(得分:0)
可以处理更多信息但是tapku库在NSDate上有一个名为isSameDay的扩展方法,所以你可以使用它:
if ([myDate isSameDay:returnedDate])
// Do something here
这就是你要找的东西吗?