iOS, unrecognized selector sent to instance?

Question

I got a mainscreen with a imported custom actionBar. I created this actionBar in a separate .xib file, with a .m and .h file. I do some graphic setup in my actionBar.m's `viewDidLoad` like `backgroundColor` and some other stuff. I also got a button on this `actionBar` i linked the way i usually link buttons, with a `IBAction`. I load my actionBar into my mainscreen like this: ``` ActionBarWithLogoff *actionBar = [[ActionBarWithLogoff alloc] initWithNibName:@"ActionBarWithLogoff" bundle:nil]; [topBar addSubview:actionBar.view]; [actionBar release]; ``` My actionBar.h: ``` - (IBAction)ActionBarLogoff:(id)sender; ``` My actionBars.m's method: ``` -(void) ActionBarLogoff:(UIButton *)sender { NSLog(@"!!!!!!!!!!ActionBarLogoff"); } ``` This is were my error steels the picture, when i click the button i get the following error: 2014-01-27 13:52:21.856 GB_Mobil_DK[2954:60b] -[__NSArrayM ActionBarLogoff:]: unrecognized selector sent to instance 0x1656d880 2014-01-27 13:52:21.858 GB_Mobil_DK[29…

Accepted Answer

You are releasing the `actionBar` instance and just retaining its `view`. If `actionBar` instance is responder to button action, then button click message is getting sent to deleted instance. You should retain the `actionBar` instance. One way to do this is making it an ivar or a `retain` property.

Also looks like you are creating a `UIViewController` for a custom view. Instead you can create just a custom `UIView` with its XIB.

EDIT

Declare retain property,

```
@property (nonatomic, retain) ActionBarWithLogoff *actionBar;
```

OR

Simply declare as ivar,

```
@interface YourViewController: UIViewController {
    ActionBarWithLogoff *actionBar;
}
```

And in `dealloc` method,

```
-(void) dealloc {
    //...

[actionBar release];

//...
}
```

Hope that helps!

iOS, unrecognized selector sent to instance?

Solution

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