Objective C setting labels after api call - ios

Question

UPDATE
I am making an api call getPacks() and successfully getting the values of two variables _numberOfPacks and _numberOfAutoRefills.
However, when I try to put it in a label it fails and gives output as (null) Packs & (null) Autorefiils
the calls are made in the following order:
getpacks()-------first (it sets value on _numberOfPacks and _numberOfAutoRefills as global variables
drawQuantity()-----set _numberOfPacks and _numberOfAutoRefills on labels.
-(void) getPacks: (IHPlacedOrder*)order{
NSOperationQueue *networkQueue = [[NSOperationQueue alloc] init];
networkQueue.maxConcurrentOperationCount = 5;
NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:#"https://XXXXXXX.XXXXX/%#",order.ID]];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc]
initWithRequest:request];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
NSString *string = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding];
if([string isEqualToString:#""]){
} else {
NSMutableDictionary *dict=[NSJSONSerialization JSONObjectWithData:[string dataUsingEncoding:NSUTF8StringEncoding] options:kNilOptions error:nil];
NSLog(#"%#",dict);
_numberOfPacks = [[dict objectForKey:#"prescription_interval"] valueForKey:#"quantity_per_interval"];
_numberOfAutoRefills = [[dict objectForKey:#"prescription_interval"]valueForKey:#"num_intervals"];
NSLog(#"PACKS:%# , AUTOREFILLS:%#",_numberOfPacks,_numberOfAutoRefills);
_quantity.text = [NSString stringWithFormat: #"%#,%#",_numberOfPacks,_numberOfAutoRefills];
}
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"%s: AFHTTPRequestOperation error: %#", __FUNCTION__, error);
}];
[networkQueue addOperation:operation];
}
followed by:
-(void)drawQuantity: (IHPlacedOrder*)order{
PPLinearLayoutLabelItem *quantityLabel = [[PPLinearLayoutLabelItem alloc] initWithText:[NSString stringWithFormat:#"%# QUANTITY & %# REFILLS", _numberOfPacks,_numberOfAutoRefills] font:[PPFonts regular18] maxWidth:[LayoutValues getMaxWidthClipped]];
[quantityLabel setPaddingBottom:5];
[quantityLabel setPaddingTop:20];
[self.topContainerContent addObject:quantityLabel];
NSString* quantityText = [NSString stringWithFormat:#"Packs + Autorefills"];
PPLinearLayoutLabelItem *quantity = [[PPLinearLayoutLabelItem alloc] initWithText:quantityText font:[PPFonts genericParagraphFontBold] maxWidth:[LayoutValues getMaxWidthClipped]];
[quantity setPaddingBottom:20];
[self.topContainerContent addObject:quantity];
LinearLayoutHorizontalLine *line1 = [[LinearLayoutHorizontalLine alloc] initWithMaxWidth:[LayoutValues getMaxWidthClipped]];
[self.topContainerContent addObject:line1];
}

Answer 1

I found the solution. I was using wrong method call to set labels. The thing is my application uses PPLinearLayoutLabelItem as a custom built label. I had to call [self.quantity setLabel:#"%#",data_fromapi] to make it work. setText would just set the text within PPLinearLayoutLabelItem class and not set the Label.