ios - uiscrollview's unusual contentsize property -


i quite new ios application development.

i working uiscrollview , found strange behavior. hope explain me.

i tried 2 methods , found outputs different.

1). uiscrollview added view in interface builder, , view (uiview) added scrollview earlier. set view's bounds manually in ib, , set scrollview's content size in class file.

observation : scrollview doesn't scroll setcontentsize, rather takes unusual content size, independent of else, own bounds.

2). same uiscrollview again added in interface builder, view added time programmatically.

observation : time works out quite good.

i don't understand have gone wrong.

can explain , elaborate

i'm not sure problem is, if want able add views uiscrollview in ib, create uiscrollview subclass , this:

- (void)awakefromnib {     [super awakefromnib];      cgrect bounds = cgrectzero;      (uiview* view in self.subviews)     {         bounds = cgrectunion(bounds, view.frame);     }      [self setcontentsize:bounds.size]; }

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