how to sort data you are fetching from the server

Question

I am getting some data from api.I have to sort date.let me give example in an array where is 10 dictionary in that i have parameter called start time.I have to show lates event first flowed next coming event like today event first and tomorrow event next.

I gone through lot of example I cant understand that can some one help me.

this the result coming from api .

(
        {
        bookingTime = "<null>";
        clubAddress = "Grand by GRT Hotels, Lobby Level, Sir Thyagaraya Road, Thyagaraya Nagar , Chennai";
        clubCity = "Chennai,India";
        clubFacilities = "<null>";
        clubInfoID = 270;
        clubLatitude = "13.0402612";
        clubLoc = Chennai;
        clubLongitude = "80.2423";
        clubMobileNumber = "<null>";
        clubName = "The Code-Grand by GRT Hotels";
        clubType = "Night club";
        clubberMobile = "<null>";
        clubberName = "<null>";
        count = 0;
        coupleCover = 0;
        coupleEntry = 0;
        couplePayment = "<null>";
        description = "<null>";
        distance = 0;
        djId = "<null>";
        dressCode = "<null>";
        endDate = "2017-07-03 18:00:00";
        entryCancellationTime = "<null>";
        eventOffer = "<null>";
        eventType = DANCE;
        favoriteType = NO;
        festivalList = "<null>";
        "idclub_event" = 6042;
        moodDJ = "<null>";
        moodMusic = "Salsa, Bachata, Kizomba";
        moodTheme = "LATIN CODE NIGHT";
        offerCredits = 0;
        paidStatus = NOTPAID;
        personAllowed = 0;
        pictureType = IMAGE;
        rateAmbience = 0;
        rateAvg = 0;
        rateFood = 0;
        rateMusic = 0;
        rateService = 0;
        rsvpEntryTime = "<null>";
        rsvpRequestTime = "<null>";
        rsvpStatus = NO;
        rsvpType = BOTH;
        stagCover = 0;
        stagEntry = 0;
        stagPayment = "<null>";
        startDate = "2017-07-03 15:30:00";
        stopEdit = "<null>";
    },
        {
        bookingTime = "<null>";
        clubAddress = "309 Rajiv Gandhi Salai (OMR), Sholinganallur, Chennai, Tamil Nadu 600119";
        clubCity = "Chennai,India";
        clubFacilities = "<null>";
        clubInfoID = 276;
        clubLatitude = "12.9056392";
        clubLoc = Sholinganallur;
        clubLongitude = "80.2256728";
        clubMobileNumber = "<null>";
        clubName = "The Gateway Hotel";
        clubType = Pub;
        clubberMobile = "<null>";
        clubberName = "<null>";
        count = 0;
        coupleCover = 0;
        coupleEntry = 0;
        couplePayment = "<null>";
        description = "<null>";
        distance = 0;
        djId = "<null>";
        dressCode = "<null>";
        endDate = "2017-09-23 16:00:00";
        entryCancellationTime = "<null>";
        eventOffer = "<null>";
        eventType = DANCE;
        favoriteType = NO;
        festivalList = "<null>";
        "idclub_event" = 5945;
        moodDJ = "<null>";
        moodMusic = "Bachata ";
        moodTheme = "Toke D Keda: Bachata Concert";
        offerCredits = 0;
        paidStatus = NOTPAID;
        personAllowed = 0;
        pictureType = IMAGE;
        rateAmbience = 0;
        rateAvg = 0;
        rateFood = 0;
        rateMusic = 0;
        rateService = 0;
        rsvpEntryTime = "<null>";
        rsvpRequestTime = "<null>";
        rsvpStatus = NO;
        rsvpType = BOTH;
        stagCover = 0;
        stagEntry = 0;
        stagPayment = "<null>";
        startDate = "2017-09-23 10:00:00";
        stopEdit = "<null>";
    },

please help me to sort this,thaks for quick responce.

Can you provide the class that will help to write the answer , plus if you provide more than 2 object in the list that is will be better — khaled Dehia, Jul 03 '17 at 17:09
Thanks for quick responce ,I havent written any code for that sorting the date but for distance sorting i have code. — Satheeshkumar Naidu, Jul 03 '17 at 17:11

Subramanian P · Accepted Answer · 2017-07-03T17:54:18.013

2

Parse api response and store the event details in a model class. Finally you will get Array of Events

Then sort the array by using NSSortDescriptor

//startDate key is the variable name of your `Event` model. Where you stored the event dates
NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"startDate" ascending:YES];

// ascending YES/NO based on your needs

NSArray *sortedEventsList = [arrayOfEvents sortedArrayUsingDescriptors:[NSArray arrayWithObject:sortDescriptor]];

Sort dictionary by date

NSDateFormatter *formatter = [[NSDateFormatter alloc] init]; 
[formatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"]; 

NSMutableArray *dateArray = [[NSMutableArray alloc] init]; 
for (int i=0; i<list.count; i++) { 
NSMutableDictionary *dict = [list[i] mutableCopy]; 
NSString *datestr=dict[@"startDate"]; 
NSDate *date = [formatter dateFromString:datestr]; 

dict[@"startDate"] = date; 
dateArray[i] = dict; 
} 
NSLog(@"%@",dateArray); 
NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"startDate" ascending:YES];

edited Jul 03 '17 at 17:54

answered Jul 03 '17 at 17:21

Subramanian P

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only this two lines enough for sorting – Satheeshkumar Naidu Jul 03 '17 at 17:25
Yes, It will give you the sorted array. – Subramanian P Jul 03 '17 at 17:26
Do you have array of custom objects? – Subramanian P Jul 03 '17 at 17:28
-(NSMutableArray *)sortdanzabydate:(NSArray *)list type:(NSString *)type { NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"date" ascending:YES]; // ascending YES/NO based on your needs NSArray *sortedEventsList = [list sortedArrayUsingDescriptors:[NSArray arrayWithObject:sortDescriptor]]; NSLog(@"%@",sortedEventsList); – Satheeshkumar Naidu Jul 03 '17 at 17:29
You have to construct the array of events object and perform this on operation that array. – Subramanian P Jul 03 '17 at 17:30
can you pls give me full answer – Satheeshkumar Naidu Jul 03 '17 at 17:30
Let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/148243/discussion-between-subramanian-and-satheeshkumar-naidu). – Subramanian P Jul 03 '17 at 17:30
@SatheeshkumarNaidu As per our discussion, I have updated the answer. – Subramanian P Jul 03 '17 at 17:51

score -1 · Answer 2 · answered Jul 03 '17 at 17:33

I create a class

public class MyOwnModel
        {
            public int ID { get; set; }
            public string Header { get; set; }
            public string Body { get; set; }
            public bool Active { get; set; }
        }

and I am getting my Data as a json

    [{"ID":1,"Header":"First Notifications","Body":"Body of alert","Active":true}
,{"ID":2,"Header":"Second Notifications","Body":"Body 2","Active":true}
,{"ID":3,"Header":"Third Notifications","Body":"Body 3","Active":true}
,{"ID":4,"Header":"Fourth Notification","Body":"Body 4","Active":true}]

and here after the sorting you see the first item with ID 4

How I did it I just used System.Linq;

var objSorted = from a in obj orderby a.ID descending select a;

you can replace id with Date and since you want to sort today then tomorrow this should be ascending when you get the data you make sure you getting data of Today and up not yesterday then the sort will be correct ascending Good luck

Sorry I didn't see the Tag , sure here is the answer https://stackoverflow.com/questions/805547/how-to-sort-an-nsmutablearray-with-custom-objects-in-it change the birthdat to Date NSSortDescriptor *sortDescriptor; sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"birthDate" ascending:YES]; NSArray *sortedArray = [drinkDetails sortedArrayUsingDescriptors:@[sortDescriptor]]; — khaled Dehia, Jul 03 '17 at 17:41

how to sort data you are fetching from the server

2 Answers2