How to call IBAction in subview?

问题

When I try to call IBAction in root view it works, but when I call in subView app creashes.

Code:

- (IBAction)webButton:(id)sender {

  NSLog(@"doesn't print log");

}

Here is ss off crash: http://dl.dropbox.com/u/77033905/urlInSafariCrashesUp.png

Thank's for help

UPDATE: Example code: http://dl.dropbox.com/u/77033905/IBActionSubView.zip

回答1:

When you create your SubViewController, the variable sub that points to it is local to the addSubViewButton: method and will be released when that method ends. You need to keep a strong reference to that controller so that it's not deallocated before you use it.

来源：https://stackoverflow.com/questions/10515259/how-to-call-ibaction-in-subview