Question

I’m having problems releasing UIView controller, this is my code.
When I press a button, I put a View on the screen in front of everything:

   viewT = [[PersonalViewController alloc] initWithNibName:@"PersonalViewController" bundle:[NSBundle mainBundle]];
//In this moment the retainCount is 1
[[AppDelegate appDelegate].window  insertSubview:viewT.view aboveSubview:[AppDelegate appDelegate].dockController.view];
[viewT release];
//Now the retain count is 3!

//... After some code, when the user press another button, I want to release the view
 [viewT.view removeFromSuperview];
//After this line, the object stills there, with a retain of 2.

So something it’s happening and I don’t understand. I’ve been reading guides about memory and I’ve never had this doubt before, what am I doing wrong? How can I completely release viewT???

Answer 1

• You own any object you create when

You create an object using a method whose name begins with “alloc”,
“new”, “copy”, or “mutableCopy” (for example, alloc, newObject, or
mutableCopy).

• When you no longer need it, you must relinquish ownership of an
  object you own

You relinquish ownership of an object by sending it a release message
or an autorelease message. In Cocoa terminology, relinquishing
ownership of an object is therefore typically referred to as
“releasing” an object.

• You must not relinquish ownership of an object you do not own

This is just corollary of the previous policy rules, stated
explicitly.

Memory Management Programming Guide

So, you need only one line of code

[viewT release];