实例方法'-presentViewController：animated'未找到

Question

I'm fairly new to this, so bear with me. I have 2 errors left to fix in my code. In both cases my instance methods are not found:

-(IBAction)goFlipSide {
    NSLog(@"goFlipSide has been called:");
    FlipsideViewController *controller = [[FlipsideViewController alloc] initWithNibName:@"FlipsideViewController" bundle:nil];

    controller.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
    [self presentViewController:controller animated:YES];

    [controller release];
}

- (void)flipsideViewControllerDidFinish:(FlipsideViewController *)controller {
    [self dismissViewControllerAnimated:YES];

    //This method gets fired when the user clicks done on the modal FlipsideViewController.  This is different
    //than the viewWillAppear.
    self.navigationController.navigationBarHidden = TRUE;
    /*
    if (self.goViewSuccess == TRUE) {
        //if the goViewSuccess boolean is set to YES - then we can load the load the goViewController
        NSLog(@"goViewSuccess is YES");
        [self loadGoViewController];
    }
    */
}

Both instance methods not found are: presentViewController: and dismissViewControllerAnimated: .

Answer 1

What class is self ? Those methods are only found on UIViewController . The full selectors are:

• presentViewController:animated:completion:
• dismissViewControllerAnimated:completion:

Try adding the completion block argument.

Answer 2

The code is supposed to be this

[self dismissViewControllerAnimated:YES completion:nil];

or if you want something when its done,

[self dismissViewControllerAnimated:YES completion:^{
//do stuff
}];

And for the other one

[self presentViewController:controller animated:YES completion:nil];