ARC seems to be releasing the view of my NSViewController
===

I am trying to solve a larger problem and I am tipping on the fact that ARC apparently is releasing the view to my NSViewController too early. I think :) So I created a simple app to reconstruct the situation.

I have a simple ARC Cocoa application. In the Window of the `MainMenu.xib` I hook up a `Custom View` to a `@property (strong) IBOutlet NSView *theView;` which is declared in the `AppDelegate.h`

In the `AppDelegate.m` I synthesize the property and then call the following: 

    - (void)applicationDidFinishLaunching:(NSNotification *)aNotification
    {
        TestViewController *tvc =  [[TestViewController alloc] initWithNibName:@"TestViewController" bundle:nil];
        [_theView addSubview:[tvc view]];
    }  

The `TestViewController`gets displayed in the `Custom View` - no problem. It contains one NSButton. It is hooked up to a method called `-(IBAction)btnPressed:(id)sender` and one NSTextView which is also hooked up as an `IBOutlet`.

In the `TestViewController.h` I declare:

    @property (nonatomic, strong) IBOutlet NSTextField *textField;
    @property (nonatomic, strong) NSString *theString;
    
    -(IBAction)btnPressed:(id)sender;

In the `TestViewController.m` I then do

    @synthesize theString = _theString;
    @synthesize textField = _textField;
    
    - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
    {
        self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
        if (self) {
            // Initialization code here.
            _theString = @"Hello World";
        }
        
        return self;
    }
    
    -(IBAction)btnPressed:(id)sender
    {
        [_textField setStringValue:_theString];
    }

When I run the app and press the button it crashes. If I check it for zombies I receive the following: 


    #	Address	Category	Event Type	RefCt	Timestamp	Size	Responsible Library	Responsible Caller
    0	0x7f97a3047560	TestViewController	Malloc	1	00:00.652.631	128	TestARC	-[AppDelegate applicationDidFinishLaunching:]
    1	0x7f97a3047560	TestViewController	Retain	2	00:00.653.088	0	TestARC	-[TestViewController initWithNibName:bundle:]
    2	0x7f97a3047560	TestViewController	Release	1	00:00.653.089	0	TestARC	-[TestViewController initWithNibName:bundle:]
    3	0x7f97a3047560	TestViewController	Retain	2	00:00.653.912	0	AppKit	-[NSNib instantiateNibWithOwner:topLevelObjects:]
    4	0x7f97a3047560	TestViewController	Release	1	00:00.658.831	0	AppKit	-[NSNib instantiateNibWithOwner:topLevelObjects:]
    5	0x7f97a3047560	TestViewController	Release	0	00:00.662.377	0	Foundation	-[NSNotificationCenter postNotificationName:object:userInfo:]
    6	0x7f97a3047560	TestViewController	Zombie	-1	00:01.951.377	0	AppKit	-[NSApplication sendAction:to:from:]

What am I doing wrong?
Thanks