Auto Layout

Question 1

In iOS, what method can be used to check layout ambiguity?

Answer 1

[view hasAmbiguousLayout]

Question 2

In iOS, what method can be used to check what is ambiguous?

Answer 2

[view exerciseAmbiguityInLayout]

Question 3

In iOS, what method can be called to identify what constraints are making a view that size?

Answer 3

[view constraintsAffectingLayoutForOrientation:]

Question 4

In iOS, what method must be called to animate a constraint?

Answer 4

[view layoutIfNeeded]