iOS how to sort NSMutableArray of custom object contained NSarray of NSNumber?

Question

I have an array (NSMutableArray) which contains StudentScoreObj and the object have missions (NSArray).

Like:

missions = @[@34, @43, @54, @23, @54];

need to sort StudentScoreObj of array using first object of missions array.

My code:

@interface StudentScoreObj : NSObject

@property (nonatomic, copy) NSString *teamType;
@property (nonatomic, copy) NSString *teamNumber;
@property (nonatomic, copy) NSString *studentName;
@property (nonatomic, copy) NSString *isParticipated ;
@property (nonatomic, copy) NSString *totalScore;
@property (nonatomic, copy) NSString *avgScore;
@property (nonatomic, copy) NSArray *missions;

@end

How have you tried?

Paulw11
– Paulw11

2017-03-16 06:37:02 +00:00
Commented Mar 16, 2017 at 6:37 — Paulw11
– Paulw11, Commented Mar 16, 2017 at 6:37

Nirav D · Accepted Answer · 2017-03-16 07:03:28Z

1

You can use sortedArrayUsingComparator for that.

NSArray *sortArray = [array sortedArrayUsingComparator:^NSComparisonResult(StudentScoreObj *obj1,StudentScoreObj  *obj2) {

    NSNumber *obj1Score = @0, *obj2Score = @0;        
    if([[obj1 missions] firstObject]) {
        obj1Score = @([[[obj1 missions] firstObject] intValue]);
    }

    if([[obj2 missions] firstObject]) {
        obj2Score = @([[[obj2 missions] firstObject] intValue]);
    }
    return [obj1Score compare:obj2Score];
}];

answered Mar 16, 2017 at 7:03

Nirav D

72.6k12 gold badges168 silver badges187 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Nirav D Over a year ago

@PillowPig Welcome mate :)

Collectives™ on Stack Overflow

iOS how to sort NSMutableArray of custom object contained NSarray of NSNumber?

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related