svprogresshud not showing on main thread

Question

On viewdidload of my tableviewcontroller i have the following

[SVProgressHUD showWithStatus:@"Loading"];
[self getData];
[SVProgressHUD dismiss];

On the getData method, i am using AFNetworking to get the data from my backend api. Since that is an asynchronous call, i would expect my SVProgressHUD to show.

  -(void) getData {
     AFHTTPRequestOperationManager * reqManager =AFHTTPRequestOperationManager manager];
     AFHTTPRequestSerializer *serializer = [AFHTTPRequestSerializer serializer];
    //set auth token..etc 
   [reqManager GET:urlString parameters:nil 
    success:^(AFHTTPRequestOperation *operation, id responseObject) {
             //code for success....
    }
    failure:^(AFHTTPRequestOperation *operation, NSError *error) {
       //code for failure
    }];
}

But it's not showing at all. So obviously i am working on my main thread. Where am i going wrong ?

Answer 1

The problem is you are showing hud immediately after method call like

[self getData];
[SVProgressHUD dismiss];

This is the problem. Move dismiss code to

-(void) getData {
     AFHTTPRequestOperationManager * reqManager =AFHTTPRequestOperationManager manager];
     AFHTTPRequestSerializer *serializer = [AFHTTPRequestSerializer serializer];
    //set auth token..etc 
   [reqManager GET:urlString parameters:nil 
    success:^(AFHTTPRequestOperation *operation, id responseObject) {
             //code for success....
             [SVProgressHUD dismiss];
    }
    failure:^(AFHTTPRequestOperation *operation, NSError *error) {
       //code for failure
              [SVProgressHUD dismiss];
    }];
}

You can see the dismiss call in success and failure of webservice call, and call the getData method by

[SVProgressHUD showWithStatus:@"Loading"];
[self getData];

remove the [SVProgressHUD dismiss] from here.