UILabel in cell only shows after scrolling up and down - ios

Question

I have a label in cell that I want to update with a data from the JSON array that I parse. The problem is the label is blank after getting the data and will only show after I scroll up and down the tableview. I've tried to force reload the view with [self.view setNeedsDisplay]; and it still doesn't work. How do I approach this?
Here is the snippets of the code with some comments in it:
#implementation outletView
#synthesize outletInfo;
- (void)viewDidLoad
{
[super viewDidLoad];
...
// Do any additional setup after loading the view.
[[AFHTTPRequestOperationManager manager] GET:[SERVER_URL stringByAppendingString:#"api/points"] parameters:[NSDictionary dictionaryWithObjectsAndKeys:[[NSUserDefaults standardUserDefaults] objectForKey:#"authToken"],#"auth_token",nil] success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSString *outletID = [[outletInfo valueForKeyPath:#"preference"] objectForKey:#"outlet_id"];
NSArray *outletArray = (NSArray*)responseObject;
NSLog(#"array: %#", outletArray);
for(NSDictionary *diction in outletArray) {
NSString *dictionID = [diction objectForKey:#"outlet_id"];
if ([dictionID isEqualToString:outletID]) {
pointOutlet = [diction objectForKey:#"total"];
}
}
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error : %#",[error description]);
}];
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *CellIdentifier = indexPath.section==0 ? #"outletViewCell" : #"categoryCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
// Here is the cell
if(indexPath.section==0){
[cell setSelectionStyle:UITableViewCellSelectionStyleNone];
[(UIImageView *)[cell viewWithTag:1] sd_setImageWithURL:[NSURL URLWithString:outletInfo[#"backgroundImageUrl"]] placeholderImage:nil];
[(UIImageView *)[cell viewWithTag:2] sd_setImageWithURL:[NSURL URLWithString:outletInfo[#"logoUrl"]] placeholderImage:nil];
[(UILabel *)[cell viewWithTag:3] setText:outletInfo[#"name"]];
[(UILabel *)[cell viewWithTag:4] setText:outletInfo[#"address"]];
//Here is the UILabel that I want to update
[(UILabel *)[cell viewWithTag:6] setText:pointOutlet];
} else {
...
}
return cell;
}
#end

Answer 1

Do following change:-
[[AFHTTPRequestOperationManager manager] GET:[SERVER_URL stringByAppendingString:#"api/points"] parameters:[NSDictionary dictionaryWithObjectsAndKeys:[[NSUserDefaults standardUserDefaults] objectForKey:#"authToken"],#"auth_token",nil] success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSString *outletID = [[outletInfo valueForKeyPath:#"preference"] objectForKey:#"outlet_id"];
NSArray *outletArray = (NSArray*)responseObject;
NSLog(#"array: %#", outletArray);
for(NSDictionary *diction in outletArray) {
NSString *dictionID = [diction objectForKey:#"outlet_id"];
if ([dictionID isEqualToString:outletID]) {
pointOutlet = [diction objectForKey:#"total"];
}
}
//Here you need to call tableView reload. This will reload your tableView and show the label.
[tableView reload];
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error : %#",[error description]);
}];

Answer 2

Reload the table on the main thread when you parse the response.
dispatch_async(dispatch_get_main_queue(), ^{
});
Reload the table in this block.

Answer 3

This kind of problem appear when data not come and your tableView methods call before, reload your table view after fetching all data from server.