IBAction is crashing with no error in console

[red]

I am not new to the iPhone so I am confused why this IBAction code is failing.

I have a view controller with 2 buttons and 2 IBActions that are connected in Interface Builder. The view controller's view is added as a subview to another view. When I click a button the App crashes but nothing is printed to the console. The debugger doesn't show the line that causes the crash.

Any ideas what may cause this?
Thanks.

[red]

If I push this view controller instead of adding it as a subview then the buttons work.

[nobre84]

Its action is most likely connected to its "File's Owner" in the xib file, that should be its view controller. Are you certain the view controller still lives at the point the button inside the view is being pushed? The button may be trying to call its action code on a released object.

[red]

The file owner connects the IBActions to the buttons.
All view controllers are still being referenced correctly.

Originally Posted by nobre84

Its action is most likely connected to its "File's Owner" in the xib file, that should be its view controller. Are you certain the view controller still lives at the point the button inside the view is being pushed? The button may be trying to call its action code on a released object.

[Duncan C]

Originally Posted by red

The file owner connects the IBActions to the buttons.
All view controllers are still being referenced correctly.

nobre84 is probably on the right track.

By having your view controller's view inserted in another view, you are fighting against the way the UI kit is designed. It is intended to have view controllers manage a view that covers the entire screen, and have those view controllers pushed onto a navigation controller or managed by a tab view.

Your view controller is probably not being retained, and is being deallocated, or at least it's views are being unloaded.

To test this, add a -dealloc method and a -viewDidUnload to your view controller, and have both those methods write a message to the console using NSLog(). Also set breakpoints on those methods. I bet you will find that your view controller is being deallocated before you click the button.


Regards,

Duncan C