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Added autolayout support #2

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merged 1 commit into from
Nov 13, 2013
Merged

Added autolayout support #2

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20 changes: 20 additions & 0 deletions UIView+NibLoading.m
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Original file line number Diff line number Diff line change
Expand Up @@ -43,16 +43,36 @@ - (void) loadContentsFromNibNamed:(NSString*)nibName
UIView * containerView = [views objectAtIndex:0];
NSAssert([[containerView class] isEqual:[UIView class]], @"UIView+NibLoading : The container view in nib %@ should be a UIView instead of %@. (It's only a container, and it's discarded after loading.)",nibName,[containerView class]);

[containerView setTranslatesAutoresizingMaskIntoConstraints:NO];

if(CGRectEqualToRect(self.bounds, CGRectZero))
// `self` has no size : use the containerView's size, from the nib file
self.bounds = containerView.bounds;
else
// `self` has a specific size : resize the containerView to this size, so that the subviews are autoresized.
containerView.bounds = self.bounds;

//save constraints for later
NSArray *constraints = containerView.constraints;

// reparent the subviews from the nib file
for (UIView * view in containerView.subviews)
[self addSubview:view];

//re-add constraints, replace containerView with self
for (NSLayoutConstraint *constraint in constraints)
{
id firstItem = constraint.firstItem;
id secondItem = constraint.secondItem;

if (firstItem == containerView)
firstItem = self;

if (secondItem == containerView)
secondItem = self;

[self addConstraint:[NSLayoutConstraint constraintWithItem:firstItem attribute:constraint.firstAttribute relatedBy:constraint.relation toItem:secondItem attribute:constraint.secondAttribute multiplier:constraint.multiplier constant:constraint.constant]];
}
}

- (void) loadContentsFromNib
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