CODEWITHSUNDEEP
iosnsarraynssortdescriptor
Praful Kadam
Praful Kadam

Reputation: 392

iOS NSArray Sorting

I have a nested array and want to sort it by a key present inside the inner array. below given is my array which I want to sort using NSSortDescriptor or in other way.

fares(
{
    pid = 1;
    type1 = (
    {
        color = "red";
        size = "big";
        properties = (
        {
            mod = "auto";
            payment = "EMI";
            moresegs = (
            {
                id = 141;
                name = "abcd";
                duration = "1 year"
            })
        })
    });
    type2 = (
    {
        color = "green";
        size = "small";
        properties = (
        {
            mod = "auto";
            payment = "EMI";
            moresegs = (
            {
                id = 141;
                name = "abcd";
                duration = "1 year"
            })
        })
    })
}

{
    pid = 1;
    type1 = (
    {
        color = "red";
        size = "big";
        properties = (
        {
            mod = "auto";
            payment = "EMI";
            moresegs = (
            {
                id = 141;
                name = "abcd";
                duration = "1 year"
            })
        })
    });
    type2 = (
    {
        color = "green";
        size = "big";
        properties = (
        {
            mod = "auto";
            payment = "EMI";
            moresegs = (
            {
                id = 141;
                name = "abcd";
                duration = "1 year"
            })
        })
    })
})

How can i sort above array using key "type2->properties->payment"?

-------update-----------

I modified the array and used NSSortDescriptor which solved my problem

Upvotes: 1

Views: 3275

Answers (2)

Xcoder
Xcoder

Reputation: 1807

Try this by inputing the fares array into this method-

+(NSArray*)sortedListBySize:(NSArray*)_unsortedList{
    NSArray *sortedListBySize = [_unsortedList sortedArrayUsingComparator:(NSComparator)^(id obj1, id obj2){

        if ([[obj1 valueForKeyPath:@"type2.properties.payments" ] intValue] < [[obj1 valueForKeyPath:@"type2.properties.payments"] intValue]) {
            return NSOrderedAscending;
        } else if ([[obj1 valueForKeyPath:@"type2.properties.payments" ] intValue] > [[obj1 valueForKeyPath:@"type2.properties.payments"] intValue]) {
            return NSOrderedDescending;
        }
        return NSOrderedSame;
    }];
    return sortedListBySize;
}

Upvotes: 0

Anil
Anil

Reputation: 2438

Try this:

NSSortDescriptor *descriptor = [[NSSortDescriptor alloc] initWithKey:@"type1.size" ascending:YES];
NSArray *finalArray = [self.firstArray sortedArrayUsingDescriptors:[NSArray arrayWithObjects:descriptor,nil]];

Upvotes: 2

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