Question

I fetch records from core data and fill NSMutableArray with them,now i want to filter them with below code but doesn’t work properly.how should i do it?

[array filterUsingPredicate:[NSPredicate predicateWithFormat:@"date==%@",date1 ]];
//date = a field with format NSDate in core data
//date1 = NSDate

Answer 1

Maybe it’s because of that you enter date with time and when you want to filter array with date1 the time of date1 isn’t equal to date that you store in core data

look at this code and enter a date without time

NSDate *dateTime=[NSDate date];
NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
[calendar setTimeZone:[NSTimeZone timeZoneWithAbbreviation:@"UTC"]];
NSDateComponents *components = [[NSDateComponents alloc] init];
components = [calendar components:NSYearCalendarUnit|NSMonthCalendarUnit|NSDayCalendarUnit
                         fromDate:dateTime];
NSDate *dateOnly = [calendar dateFromComponents:components];