IBOutlet发布

Question

当视图消失（ viewWillDisappear或viewDidDisappear ）时是否释放unsafe_unretained IBOutlet对象，还是在视图卸载时释放它们（ viewDidUnload ）？

Answer 1

IBOutlets should never form a strong retain-relationship to their View Controller because they are not owned by it. So in effect, they are just released when the view controller passes out of context. Because of their extremely weak references, they are deallocated when the view controlle is deallocated, which can occur at any time. There is no specific function.