iphone - iOS Overlay view which always sits on top? -


i haven't been able find on , feel isn't possible in simple manner.

can have view, such loading bar example sits on every other view controller until choose dismiss @ same time underlying view can still interacted with? sort of acting system view. persistent when presenting new view controllers , all.

thanks.

add subview of window. this:

uiview *myview = ... [self.window addsubview:myview];

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