CODEWITHSUNDEEP
iosarrayssorting
Bharath
Bharath

Reputation: 180

How to sort an array containing NSDates

Can you help me on sorting (ascending order) the array contains NSDate.

NSMutableArray *tempArray = [[NSMutableArray alloc]init];

[tempArray addObject: NSDate1];
[tempArray addObject: NSDate2];
[tempArray addObject: NSDate3];
[tempArray addObject: NSDate4];

Upvotes: 2

Views: 705

Answers (5)

Sai Bharath Yadav
Sai Bharath Yadav

Reputation: 252

Use below code:

  [your array sortUsingComparator:
  ^NSComparisonResult(id obj1, id obj2){

         obj1 *o1 = (obj1*)obj1;
         obj2 *o2 = (obj2*)obj2;
         if (o1.personAge > 02.personAge) {
            return (NSComparisonResult)NSOrderedDescending;
        }


        return (NSComparisonResult)NSOrderedSame;
}

];

Upvotes: 1

Viraj Padsala
Viraj Padsala

Reputation: 1398

[array1 sortUsingComparator: (NSComparator)^(NSString *key1, NSString *key2)
 {        
     return [key2 compare: key1];
 }
 ];

If you want array in ascending or descending order just change

compare

return [key1 compare: key2];

Upvotes: 0

Avinash Tag
Avinash Tag

Reputation: 162

Best way to do this,use sort descriptor.

 NSSortDescriptor *dateSortDescriptor = [NSSortDescriptor sortDescriptorWithKey:@"self.dueDate" ascending:YES comparator:^NSComparisonResult(NSDate *dateObject1, NSDate *dateObject2) {

return [dateObject1 compare:dateObject2];
}];

Upvotes: 0

vadian
vadian

Reputation: 285079

Since NSDate responds to compare and the default sorting order is ascending, the simplest way is

[tempArray sortUsingSelector:@selector(compare:)];

Upvotes: 1

SHASHANK
SHASHANK

Reputation: 109

NSSortDescriptor *dateSortDescriptor = [NSSortDescriptor sortDescriptorWithKey:@"self.dueDate" ascending:YES comparator:^NSComparisonResult(id obj1, id obj2) {

    NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
    [dateFormat setDateFormat:@"dd/MM/yyyy"];
    NSDate *date1 = [dateFormat dateFromString:obj1];
    NSDate *date2 = [dateFormat dateFromString:obj2];

    return [date1 compare:date2];
}];

Upvotes: 0

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