Question

I want to use my own controller for navigating in between uiviewcontrollers. So like that I can have custom transitions in between my views.

I did something which is working but I’m not sure if it is the right way? Could there be problems related to memory later?…I’m not sure everything is deallocated the right way.

Thanks for your help!

Here is my code:

In my AppDelegate, when it starts:

self.rootVC = [[[MenuView alloc] initWithNibName:@"MenuView" bundle:nil] autorelease];
[self.window addSubview:self.rootVC.view];

In my AppDelegate, the method for switching in between UIViewController:

-(void) changeRootController: (NSString*) ctrlName{

    UIViewController *oldVC = self.curVC;
    UIViewController *newVC;

    if(ctrlName == @"Studio"){
        newVC = [[StudioView alloc] initWithNibName:@"StudioView" bundle:nil];
    }
    else if(ctrlName == @"Menu"){
        newVC = [[MenuView alloc] initWithNibName:@"MenuView" bundle:nil];
    }

    self.curVC = newVC;

    [UIView transitionWithView:self.window
            duration:1.0
            options:UIViewAnimationOptionCurveEaseIn
            animations:^{
                newVC.view.transform = CGAffineTransformConcat(newVC.view.transform, CGAffineTransformMakeTranslation(-1024, 0));
                [self.rootVC.view addSubview:newVC.view];
                newVC.view.transform = CGAffineTransformConcat(newVC.view.transform, CGAffineTransformMakeTranslation(1024, 0));
                oldVC.view.transform = CGAffineTransformConcat(oldVC.view.transform, CGAffineTransformMakeTranslation(1024, 0));
            } 
            completion:^(BOOL finished){
                if(finished){
                    [oldVC release];
                }
            }
     ];
}

And I switch views in my UIViewController as follow:

AppDelegate *ad = (AppDelegate*)[[UIApplication sharedApplication] delegate];
[ad changeRootController:@"Studio"];

Answer 1

newVC isn’t released.

The block should retain the newVc so after your transitionWithView
you should call. (last line of function)

[newVC autorelease];

Thats assuming that the self.curVC property is strong OR retained