发布后，Dealloc没有立即调用

Question

I have a root view that loads two view controller. eg: FirstVC , SecondVC .

I am showing FirstVC as the root view controller when the app launches, on some action on FirstVC I load SecondVC by removing first.

For loading SecondVC I first remove FirstVC by

[FirstVCobj.view removeFromSuperView];  
[FirstVCobj release];
FirstVCobj = nil;

After that I allocate and create SecondVC

Now only after calling SecondVC 's viewdidload() is FirstVC 's dealloc() method called. Is this the right execution path, or is it due to some mistake I have made? The above is exactly how I remove and create my view controllers.

Answer 1

i assume it is a UIView you're talking about.

---

• addSubview retains the view
• removeFromSuperView releases or AUTORELEASES it -- an implementation detail you don't control

---

to 'see' it: wrap it in a pool of your own

@autoreleasepool {
    [FirstVCobj.view removeFromSuperView];  
    [FirstVCobj release];
    FirstVCobj = nil;
}

Answer 2

[FirstVCobj removeFromParentAndCleanup:YES];

检查一下是否可行。