Adding Objects from NSMutableDictionary to NSMutableArray

Question

I am new in ios development, I want to add some object from database which I managed to put into a NSMutabledictionary and I want to put into a NSMutableArray to display in a UITableView. Below is my .m file code:

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    jsonURL = [NSURL URLWithString:@"http://localhost:8888/read_product_list.php"];

    //jsonData = [[NSString alloc] initWithContentsOfURL:jsonURL];

    NSData *data = [NSData dataWithContentsOfURL:jsonURL];
    [self getData:data];    
}

-(void) getData:(NSData *) response {
    NSError *error;

    NSMutableDictionary *json = [NSJSONSerialization JSONObjectWithData:response options:kNilOptions error:&error];
    //NSLog(@"%@", json);


    jsonArray = [[NSMutableArray alloc] init];
    /*for(int i = 0; i < json.count; i++){
        [jsonArray addObject:[json objectForKey:];
    }*/

    //NSLog(@"%@", jsonArray);

}

Thank you in advance!

Can you please add a sample of the response you're getting from your url (the json text you're trying to parse)? — Alladinian
– Alladinian, Commented May 29, 2012 at 10:03
[{"0":"Samsung LCD 42 TV","Name":"Samsung LCD 42 TV","1":"7900.99","Price":"7900.99","2":"Buy the new Samsung 42 nth TV from Hi-if. available only this coming weekend. ","Description":"Buy the new Samsung 42 nth TV from Hi-if. available only this coming weekend. "},{"0":"iPhone 4s","Name":"iPhone 4s","1":"7000","Price":"7000","2":"Buy a brand new iPhone 4s from Orange with a lot of Features such as Siri, 3G and Wi-Fi.","Description":"Buy a brand new iPhone 4s from Orange with a lot of Features such as Siri, 3G and Wi-Fi."}] — iOS Developer
– iOS Developer, Commented May 29, 2012 at 10:08
when i run it with the NSLog it gives the below result, so i wanted to put the result into a NSMutableArray — iOS Developer
– iOS Developer, Commented May 29, 2012 at 10:26
2012-05-29 12:22:42.051 iShop[4829:f803] ( { 0 = "Samsung LCD 42 TV"; 1 = "7900.99"; 2 = "Buy the new Samsung 42 nth TV from Hi-if. available only this coming weekend. "; Description = "Buy the new Samsung 42 nth TV from Hi-if. available only this coming weekend. "; Name = "Samsung LCD 42 TV"; Price = "7900.99"; } ) — iOS Developer
– iOS Developer, Commented May 29, 2012 at 10:27

mattjgalloway · Accepted Answer · 2012-05-29 10:08:29Z

3

If you want the values of the dictionary then try:

jsonArray = json.allValues;

It won't be ordered by anything interesting though, so you might want to order it afterwards as well.

But, if this really is your JSON:

[{"0":"Samsung LCD 42 TV","Name":"Samsung LCD 42 TV","1":"7900.99","Price":"7900.99","2":"Buy the new Samsung 42 nth TV from Hi-if. available only this coming weekend. ","Description":"Buy the new Samsung 42 nth TV from Hi-if. available only this coming weekend. "},{"0":"iPhone 4s","Name":"iPhone 4s","1":"7000","Price":"7000","2":"Buy a brand new iPhone 4s from Orange with a lot of Features such as Siri, 3G and Wi-Fi.","Description":"Buy a brand new iPhone 4s from Orange with a lot of Features such as Siri, 3G and Wi-Fi."}]

Then that's actually an array anyway, so you probably just want:

jsonArray = [NSJSONSerialization JSONObjectWithData:response options:kNilOptions error:&error];

answered May 29, 2012 at 10:08

mattjgalloway

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1 Comment

Alladinian Over a year ago

That's why I asked him as well :P This is the most evil pitfall with that kind of questions, we just 'assume' that the OP knows how the actual data structure is. Anyway +1 for being quicker than me :)

Jonathan. · Accepted Answer · 2012-05-31 12:47:11Z

0

To get all values into an array

NSMutableArray *jsonArray = [[NSMutableArray alloc] initWithArray:[json allValues]];

To get all keys into an array

NSMutableArray *jsonKeyArray = [[NSMutableArray alloc] initWithArray:[json allKeys]];

edited May 31, 2012 at 12:47

Jonathan.

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answered May 29, 2012 at 10:09

Ashish Chauhan

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