Question

- (void)fadeOutSplash {
    UIImageView *splash = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"Default-Landscape~ipad.png"]];
    [self.window.rootViewController.view addSubview:splash]; // <-- OBJECT IS BEING RETAINED HERE

    [UIView animateWithDuration:0.5 
                     animations:^{
                         splash.alpha = 0;
                     }
                     completion:^(BOOL finished) {
                         [splash removeFromSuperview];
                     }];
}

I think ARC is retaining my “splash” when I add it to the subview of the rootViewController. ARC should release “splash” when I run my animation completion because it removes my “splash” from it’s own super view. However, I can see in the allocation instruments that this parent view controller is staying allocated and it shows the problem line being where splash is added to the rootViewController. What can I do to make sure “splash” is released?

Answer 1

I fixed this problem, but I’m not exactly sure how.. Here’s the likely solution:

- (void)removeFromSuperView
{
    // Use this space to manually release any non IB pointers / variables as needed
    self.someDictionaryIMadeInInit = nil;

    while(self.subviews.count > 0) [[self.subviews objectAtIndex:0] removeFromSuperView];
    [super removeFromSuperView];
}

This a little trick I came up with for ARC related views. I recommend it more as a last resort because truly this should be solved the appropriate way, but it’s worth a try to save you from tearing out your hair!