Question

I have a UIView object and I add it as a subview it using [self.view addSubview:mySubView];. Afterwards I call
[mySubView removeFromSuperview]; and then I try to do [mySubView release]; but app crashes here.

Does RemoveFromSuperview also call release on mySubView?

Answer 1

Please post your code, else its difficult to answer

Crash code

UIView *subview = [[UIView alloc] init]; //manual allocation
[self.view addSubView:subview]; //view retained automatically
[subview release]; //released the manual allocated memory

for(UIView *subview in [scrollView subviews]) {    

    [subview removeFromSuperview]; //released the view retained automatically. Now retain count reach 0/
   [subview release]; // crash.....
}

Code Without Crash

UIView *subview = [[UIView alloc] init]; //manual allocation
[self.view addSubView:subview]; //view retained automatically   

[subview removeFromSuperview]; //released the view retained automatically. Now retain count reach 1

[subview release]; // No crash .retain count reach 0

You simply do not release things that you have not explicitly allocated or retained yourself.