Get only last vale of dictionary [closed] - ios

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I am new in iOS development and my problem is when i parse data than only last value is showing above value are not showing .Please solve my issue.
Array name city info get 3 value but when i want to display them it gives onle last value of array.
-(void)connectionDidFinishLoading:(NSURLConnection *)connection {
NSDictionary *json = [NSJSONSerialization JSONObjectWithData:WebData1 options:0 error:0];
NSArray *city_info = [json objectForKey:#"city_info"];
for(NSDictionary *dic in city_info) {
NSMutableArray *vlcc_service_name = [dic objectForKey:#"vlcc_service_name"];
Centers = [[NSMutableArray alloc]initWithObjects:vlcc_service_name, nil];
}
// NSLog(#"%#", vlcc_service_name);
NSLog(#"%#", Centers);
[_CenterTableView reloadData];
}

Answer 1

NSDictionaries are unordered,that there are not first or last element. In fact, the order of the keys are never guaranteed to be the same, even in the lifetime of a specific dictionary.
If you want any object, you can get one of the keys:
id key = [[json allKeys] objectAtIndex:0]; // ensure that your 'json' is not empty
id object = [json objectForKey:key];
Choice - 2
array you can get all objects
Centers = [NSMutableArray new]; // allocate the memory on outside the Loop
for(NSDictionary *dic in city_info) {
[Centers addObject: [dic objectForKey:#"vlcc_service_name"]];
}
NSLog(#"the last object=%#", [Centers lastObject]);
// else
NSLog(#"the last object=%#", [yourArray objectAtIndex:[Centers count] - 1]; );

Answer 2

Please try with this.
-(void)connectionDidFinishLoading:(NSURLConnection *)connection {
NSDictionary *json = [NSJSONSerialization JSONObjectWithData:WebData1 options:0 error:0];
NSArray *city_info = [json objectForKey:#"city_info"];
NSMutableArray *Centers = [[NSMutableArray alloc]init];
for(NSDictionary *dic in city_info) {
NSString *vlcc_service_name = [dic objectForKey:#"vlcc_service_name"];
/NSLog(#"%#", vlcc_service_name);
[Centers addObject: vlcc_service_name];
}
NSLog(#"%#", Centers);
[_CenterTableView reloadData];
}

Answer 3

-(void)connectionDidFinishLoading:(NSURLConnection *)connection {
NSDictionary *json = [NSJSONSerialization JSONObjectWithData:WebData1 options:0 error:0];
NSArray *city_info = [json objectForKey:#"city_info"];
NSMutableArray *Centers = [NSMutableArray array];
for(NSDictionary *dic in city_info) {
NSMutableArray *vlcc_service_name = [dic objectForKey:#"vlcc_service_name"];
[Centers addObjectsFromArray:vlcc_service_name];
}
// NSLog(#"%#", vlcc_service_name);
NSLog(#"%#", Centers);
[_CenterTableView reloadData];
}

Answer 4

You can do it without any for loop. Do like this:
NSMutableArray *Centers = [[NSMutableArray alloc]initwithArray:city_info];