ios - about UIView addSubview -


i have 2 uiviews, named , b, , add uiview b a's subviews:

[a.view addsubview b]

i wondering there delegation or hook b can informed "oh, added a!" when added a? or other way let b know added other uiview container?

you can override willmovetosuperview: or didmovetosuperview methods in uiview subclass in order informed when view added view.


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