Sort JSON objects

Question

I have 3 MutableArray's, but only want to use one of them, to sort all of them in the tableView.

jsonArray = [[NSMutableArray alloc] init]; //NAME
jsonStations = [[NSMutableArray alloc] init]; //URL
jsonSubtitle = [[NSMutableArray alloc] init]; //TABLEVIEW CELL SUBTITLE

I want to use the jsonArray to sort all the json data in my tableView.

Heres how i get the json data:

    NSURL *url = [NSURL URLWithString:@"http://www.xxxxx.com/xxx.json"];
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    connection = [NSURLConnection connectionWithRequest:request delegate:self];
    if(connection)
    {
        jsonData = [[NSMutableData alloc] init];
    }

...

- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
    NSDictionary *allDataDictionary = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableContainers error:nil];
    NSArray *arrayOfItems = [allDataDictionary objectForKey:@"items"];

    for (NSDictionary *diction in arrayOfItems) {
        NSString *titles = [diction objectForKey:@"title"];
        NSString *subtitles = [diction objectForKey:@"subtitle"];
        NSString *station = [diction objectForKey:@"url"];

        [jsonArray addObject:titles];
        [jsonSubtitle addObject:subtitles];
        [jsonStations addObject:station];

        [self.tableview reloadData];

    }    
}

Sooo how do i sort my jsonArray by the titles and show then sorted in the tableView ?

XCode is the development environment. It's your editor, and it compiles and links your app. It does not do anything with your JSON. For that, you use Objective-C and the iOS library. I've changed the title and the tags accordingly. — Codo
– Codo, Commented Dec 26, 2012 at 16:04
[self.tableview reloadData]; is this works properly ? if so all you need to do is sort jsonArray before calling [self.tableview reloadData]; — SpaceDust__
– SpaceDust__, Commented Dec 26, 2012 at 16:09

Andrey Chernukha · Accepted Answer · 2012-12-26 16:13:56Z

1

This is how you can sort it:

 NSArray *sortedArray;
sortedArray = [jsonArray sortedArrayUsingComparator:^NSComparisonResult(NSString *title1, NSString *title2)
             {
                 if ([title1 compare:title2] > 0)
                     return NSOrderedAscending;
                 else
                     return NSOrderedDescending;
             }]; 
[jsonArray setArray:sortedArray];

edited Dec 26, 2012 at 16:13

answered Dec 26, 2012 at 16:08

Andrey Chernukha

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4 Comments

Patrick R Over a year ago

Where shall i insert that ?

Andrey Chernukha Over a year ago

but don't just INSERT this piece of code. that's just an example of how to sort

Patrick R Over a year ago

Ah okay.. is it possible you could make the sort function to fit my code ? in new to json, and not quite into Obj-c

Andrey Chernukha Over a year ago

i've added a line. if your TableView takes data from jsonArray that should be enough

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