Question

I have a main view to which I have added a subview using the following code:

-(IBAction)launchPage:(id) sender
{
    ActivityViewController *activityViewController = [[ActivityViewController alloc] initWithNibName:@"ActivityViewController" bundle:nil];
    activityViewController.view.frame = CGRectMake(183, 104, 841, 573);
    activityViewController.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"activity_bckgrnd.png"]];
    [self.view addSubview:activityViewController.view];    
}

I have buttons on this xib file to which I am trying to add button events. But when I click on the button after assigning IBAction, I am getting an EXEC BAD ACCESS error at

int main(int argc, char *argv[])
{
    @autoreleasepool {
    return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
}

Can anyone please let me know what the mistake might be. I have enabled ARC for the project.

In .h file of view controller that I have added as subview, I have declared

@property(strong,retain) UIButton *billingAddressChkBox;

and in the .m file, The IBAction looks like

- (IBAction)checkboxButton:(id)sender{

if (checkboxSelected == 0){
    [billingAddressChkBox setSelected:YES];
    checkboxSelected = 1;

} else {
    [billingAddressChkBox setSelected:NO];
    checkboxSelected = 0;
}

}

I have enabled zombies and I get the following message.

message sent to deallocated instance

Can I know which instance is getting deallocated from its address?

Answer 1

I had to just initialize

ActivityViewController *activityViewController

in the header file and access it from the .m file. That solved the issue.