Question

i am getting the web services from the .net web server.

while in the process (getting data) i am displaying a subview with activity indicator.

After completing getting data i need to close that view.

i have two classes one is myclassviewcontroller,webservices

Basically i am writing code to get web services webservices.

In webservices class at

-(void)connectionDidFinishLoading:(NSURLConnection *)connection i call myclass like this.

myclassviewcontroller *obj = [[myclassviewcontroller alloc]init];
[obj mymethod];

At myclassviewcontroller i write this code for my method.

• (void)mymethod {

  [loadview removeFromSuperview];
  }

the method is executed but view is not removed.

I already declared it in myclassviewcontroller.h class also.

i am checking this by keeping some text in NSlog

But if i calling this mymethod in myclassviewcontroller.m using timer then it removes view.

what the wrong.

can any one please help me.

I think it may be understand what is my problem.Let me place comment if not.

Thank u in advance.

Answer 1

I believe the problem with your code is how you access the myclassviewcontroller. It must have already been on the screen while the data was loading, so creating a new instance of that class and calling a method against one of it’s uninitialized members (loadview) does nothing.

myclassviewcontroller *obj = [[myclassviewcontroller alloc]init];
// here object has just been initialized 
//    (it is not the same instance as the one on screen)
[obj mymethod];

If obj was a reference to the actual viewcontroller that is on screen, you could easily call:

[obj.loadview removeFromSuperview];

or

[obj mymethod]; // if you wanted to add more code in that function

So, the real problem is that you accessing a different instance of myclassviewcontroller than the one which is actually on screen. You need a variable holding some reference to the correct instance of myclassviewcontroller to access the loadview ivar.

In webservices.h:

@interface webservices : NSObject {
...

// This ivar will have to be set when webservices is initialized
myclassviewcontroller * viewController;
}
@property (nonatomic, retain) myclassviewcontroller * viewController;

and webservices.m would need to @synchronize viewController.

Then in connectionDidFinishLoading: you can just call [viewController.loadview removeFromSuperview];