ios - Scroll is not detected in embedded ScrollView when Autolayout is enabled -


layout a - scroll detected in both scrollviews

-view
----scrollview1
------contentview1
----scrollview2
------contentview2

layout b - scroll not detected in scrollview2

-view
---scrollview1
-----contentview1
--------scrollview2
----------contentview2


layout both scrollviews works autolayout enabled.
layout b scrollview2 not work autolayout enabled.

when trying both layouts i'm running code set contentsizes:

- (void)viewdidlayoutsubviews{     [super viewdidlayoutsubviews];     self.scrollview1.contentsize = self.contentview1.frame.size;     self.scrollview2.contentsize = self.contentview2.frame.size; }


how can scrollview in layout b working autolayout enabled?
i'm using ios 7.1

adding constraints correctly solved problem. video helpful https://www.youtube.com/watch?v=4ocwxhlbq-a


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