Auto Layout in iOS - Speaker Deck

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Auto Layout Sam Kirchmeier @skirchmeier Adam May @yammada Friday, September 27, 13

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Friday, September 27, 13

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Lineup Auto Layout crash course Ways to use it Demos & discussion Friday, September 27, 13

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Auto Layout Friday, September 27, 13

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Friday, September 27, 13

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Alternative to Springs & Struts Friday, September 27, 13

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Alternative to Springs & Struts Relationships instead of frames Friday, September 27, 13

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Alternative to Springs & Struts Relationships instead of frames Layout is resolved automatically Friday, September 27, 13

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Alternative to Springs & Struts Relationships instead of frames Layout is resolved automatically Magic Friday, September 27, 13

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Who’s used it? Friday, September 27, 13

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Why? Friday, September 27, 13

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Friday, September 27, 13

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Easy Friday, September 27, 13

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Easy Versatile Friday, September 27, 13

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Easy Versatile Descriptive Friday, September 27, 13

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Easy Versatile Descriptive Localizable Friday, September 27, 13

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Springs & Struts Auto Layout Friday, September 27, 13

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Springs & Struts Auto Layout Hard-coded Friday, September 27, 13

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Springs & Struts Auto Layout Hard-coded Content-driven Friday, September 27, 13

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Springs & Struts Auto Layout Hard-coded Isolated Views Content-driven Friday, September 27, 13

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Springs & Struts Auto Layout Hard-coded Isolated Views Content-driven Related Views Friday, September 27, 13

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Springs & Struts Auto Layout Hard-coded Isolated Views autoResizingMask Content-driven Related Views Friday, September 27, 13

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Springs & Struts Auto Layout Hard-coded Isolated Views autoResizingMask Content-driven Related Views Constraints Friday, September 27, 13

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Springs & Struts Auto Layout Hard-coded Isolated Views autoResizingMask Familiar Content-driven Related Views Constraints Friday, September 27, 13

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Springs & Struts Auto Layout Hard-coded Isolated Views autoResizingMask Familiar Content-driven Related Views Constraints Scary Friday, September 27, 13

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Constraints Friday, September 27, 13

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Scary Friday, September 27, 13

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Scary Friday, September 27, 13

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Scary Friday, September 27, 13

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Scary attribute attribute == x multiplier + constant Friday, September 27, 13

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Scary attribute attribute == x multiplier + constant Friday, September 27, 13

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Scary attribute == x multiplier + constant top Friday, September 27, 13

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Scary attribute == x multiplier + constant top Friday, September 27, 13

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Scary attribute == x multiplier + constant top Friday, September 27, 13

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Scary == x multiplier + constant top top Friday, September 27, 13

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Scary == x multiplier + constant top top Friday, September 27, 13

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Scary == x + constant top top 1.0 Friday, September 27, 13

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Scary == + constant top top Friday, September 27, 13

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Scary == + top top standard Friday, September 27, 13

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Scary == + top top standard Friday, September 27, 13

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Scary == + top top standard le! le! == + standard Friday, September 27, 13

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Scary == + top top standard le! le! == + standard Same behavior as Springs & Struts No frame necessary Friday, September 27, 13

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Le! Top Baseline Width Center X Right Bottom None Height Center Y Friday, September 27, 13

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Le! Top Baseline Width Center X Right Bottom None Height Center Y Leading Trailing Friday, September 27, 13

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Scary Friday, September 27, 13

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!"#$ Friday, September 27, 13

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Unsatisfiability Friday, September 27, 13

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Ambiguity Friday, September 27, 13

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Content Hugging Compression Resistance Intrinsic Content Size Friday, September 27, 13

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Priorities Friday, September 27, 13

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Ways to use it Interface Builder NSLayoutConstraint Visual Format Language Friday, September 27, 13

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Interface Builder Friday, September 27, 13

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NSLayoutConstraint Friday, September 27, 13

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NSLayoutConstraint + (id)constraintWithItem:(id)view1 attribute:(NSLayoutAttribute)attr1 relatedBy:(NSLayoutRelation)relation toItem:(id)view2 attribute:(NSLayoutAttribute)attr2 multiplier:(CGFloat)multiplier constant:(CGFloat)constant; Friday, September 27, 13

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[NSLayoutConstraint constraintWithItem:view1 attribute:NSLayoutAttributeTop relatedBy:NSLayoutRelationEqual toItem:view2 attribute:NSLayoutAttributeTop multiplier:1.0 constant:20.0]; == x 1.0 + 20.0 top top Friday, September 27, 13

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Visual Format Language Friday, September 27, 13

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[label]-[textField] Friday, September 27, 13

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|-[label]-| Friday, September 27, 13

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V:|-(40)-[logo] Friday, September 27, 13

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|-(40)-[logo]-[label]-[textField(>=20)]-| Friday, September 27, 13

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[NSLayoutConstraint constraintsWithVisualFormat:@"|-[label]" options:0 metrics:nil views:views]; [NSLayoutConstraint constraintsWithVisualFormat:@"V:|-[label]" options:0 metrics:nil views:views]; Friday, September 27, 13

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Demo Localization Friday, September 27, 13

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Demo Free Form Editor Friday, September 27, 13

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UITextView UIScrollView UIMapView Friday, September 27, 13

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UITextView UIScrollView UIMapView Friday, September 27, 13

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UIImageView UIView Friday, September 27, 13

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Z UIScrollView UIImageView UIScrollView contentSize Friday, September 27, 13

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Demo Free Form Editor Friday, September 27, 13

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Constraint Stacking Friday, September 27, 13

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UITextView UIScrollView UIMapView Image Views Friday, September 27, 13

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UIImageView UIImageView UIImageView Friday, September 27, 13

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UIImageView UIImageView ? ? Friday, September 27, 13

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UIImageView UIImageView UIImageView Friday, September 27, 13

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UIImageView UIImageView UIImageView ≥20 ≥20 ≥20 Friday, September 27, 13

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UIImageView UIImageView ≥20 ≥20 Friday, September 27, 13

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Demo Constraint Stacking Friday, September 27, 13

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Interface Builder Quirks Friday, September 27, 13

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Easy to accidentally delete outlets Friday, September 27, 13

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Easy to accidentally delete outlets Does not allow ambiguity Friday, September 27, 13

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Easy to accidentally delete outlets Does not allow ambiguity Adds minimum best constraints Friday, September 27, 13

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Easy to accidentally delete outlets Does not allow ambiguity Adds minimum best constraints Automatically promotes constraints Friday, September 27, 13

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Easy to accidentally delete outlets Does not allow ambiguity Adds minimum best constraints Automatically promotes constraints Automatically deletes constraints Friday, September 27, 13

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Interface Builder Tips Friday, September 27, 13

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Change to portrait/landscape/freeform Friday, September 27, 13

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Change to portrait/landscape/freeform Promote constraints to User Constraints Friday, September 27, 13

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Change to portrait/landscape/freeform Promote constraints to User Constraints Learn to expect what IB will do Friday, September 27, 13

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Change to portrait/landscape/freeform Promote constraints to User Constraints Learn to expect what IB will do Size to fit content Friday, September 27, 13

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Change to portrait/landscape/freeform Promote constraints to User Constraints Learn to expect what IB will do Size to fit content Wait for Xcode 5 Friday, September 27, 13

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Recap Introduced Auto Layout Ways to use it Demos Friday, September 27, 13

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Discussion https://github.com/livefront/autolayout Sam Kirchmeier @skirchmeier Adam May @yammada Friday, September 27, 13