Touchupinside和简单的viewController问题

Question

I've got a very simple viewController question .

I've got a main view with 2 buttons, upon touchupinside of a button I would like to load a new view Controller ( a table view ) .

I've created a new viewController with its nib file .

Created an IBAction like this that I've linked the button to in IB :

- (IBAction)displayVin {

    UIViewController *vinController = [[UIViewController alloc] initWithNibName:@"vinController" bundle:nil];
    [self.navigationController pushViewController:vinController animated:YES];
    [vinController release];

}

It's not doing anything therefore I must be forgetting something, but what ? should I declare this newViewController somewhere else ? It's compiling and executing fine with no error message .

UPDATE:

I'm now using this :

- (IBAction)displayVin:(id)sender {

    NSLog(@"here");
    UIViewController *vinController = [[UIViewController alloc] initWithNibName:@"vinController" bundle:nil];
    [self.navigationController pushViewController:vinController animated:YES];
    [vinController release];

}

But it's crashing with this error when I press the button :

[displayVin]: unrecognized selector sent to instance 0x8d03000 * * Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[displayVin]: unrecognized selector sent to instance 0x8d03000'*

Should I be declaring something somewhere else , or "should" that bit of code be enough ?

Answer 1

Start by using NSLog() to determine if you're actually inside the displayVin() routine. Button events send a parameter to the acion, so you should probably declare it as -(IBAction)displayVin:(id)sender instead of just -(IBAction)displayVin .

Answer 2

For your updated code, you might have to reconnect the IBOutlet in the IB file. It looks like it's still calling the [viewController displayVin] method (without arguments), instead of the [viewController displayVin:]