Responsive iOS Collection Views 09 / 06 / 2016 Andrea Bizzotto
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Responsive iOSCollection Views
09 / 06 / 2016
Andrea Bizzotto
Responsive iOSCollection Views
09 / 06 / 2016
Andrea Bizzotto
(oh, and size classes…)
Responsive?
Year 2010
Year 2010
Year 2010if UI_USER_INTERFACE_IDIOM() == .Pad { // iPad layout code here}else { // iPhone layout code here}
CGSizeMake(1024, 768)UIScreen.mainScreen().bounds.size// What about interface orientation?
if UI_USER_INTERFACE_IDIOM() == .Pad { // iPad layout code here}else { // iPhone layout code here}
CGSizeMake(1024, 768)UIScreen.mainScreen().bounds.size// What about interface orientation?
Year 2010
if UI_USER_INTERFACE_IDIOM() == .Pad { // iPad layout code here}else { // iPhone layout code here}
CGSizeMake(1024, 768)UIScreen.mainScreen().bounds.size// What about interface orientation?
Year 2010
if UI_USER_INTERFACE_IDIOM() == .Pad { // iPad layout code here}else { // iPhone layout code here}
CGSizeMake(1024, 768)UIScreen.mainScreen().bounds.size// What about interface orientation?
Year 2010
😱
Year 2012
Year 2012NSLayoutConstraint
Springs & Strouts
Auto-Layout
UIView.frame Input Output
Year 2014
Year 2014
Size Classes
Auto-Layout (iOS 6)
Split Views (iOS 9)
Size Classes (iOS 8)
Stack Views (iOS 9)
Apple wants you Auto-Layout (iOS 6)
Split Views (iOS 9)
Size Classes (iOS 8)
Stack Views (iOS 9)
NSLayoutConstraint
Before Size Classes
NSLayoutConstraint
Any
AnyCompact Regular
x3
Any
Compact Regular
x3
Any
Compact Regular
What about the code?
if UI_USER_INTERFACE_IDIOM() == .Pad { // iPad layout code here}else { // iPhone layout code here}
if UI_USER_INTERFACE_IDIOM() == .Pad { // iPad layout code here}else { // iPhone layout code here}
Bad
if UI_USER_INTERFACE_IDIOM() == .Pad { // iPad layout code here}else { // iPhone layout code here}
Bad
if UI_USER_INTERFACE_IDIOM() == .Pad { // iPad layout code here}else { // iPhone layout code here}
// in your view controller:let traitCollection: UITraitCollection = self.traitCollectionswitch traitCollection.horizontalSizeClass { case .Regular: // do this case .Compact: // do that case .Unspecified: // look this up: https://dayone.me/uJGzoW}switch traitCollection.verticalSizeClass {// same thing}// What about interface orientation?
Bad
Good
UI_USER_INTERFACE_IDIOM() UITraitCollection
Changes Neverat runtime
(interface rotation,split view updates)
Scope Everywhere(it’s a macro) UIViewController
func traitCollectionDidChange(previousTraitCollection: UITraitCollection?)
Responsive Collection Views
• Case Study: the iOS Photos app
• Compact layout and Regular layout are quite different
Demo Time
Summary• Universal apps: think ahead (even if PO tells you MVP is iPhone or iPad
only)
• Bonus: teach responsive layouts to designers
• Don’t: UI_USER_INTERFACE_IDIOM()
• Do: Size Classes & UITraitCollections
• You will get split view support for free
• Your app will work on new screen sizes
• Do your layouts in IB, only resort to code you can’t do it in IB
• If you can: use Stack Views
• WWDC….
(Personal opinion)
Summary• Universal apps: think ahead (even if PO tells you MVP is iPhone or iPad
only)
• Bonus: teach responsive layouts to designers
• Don’t: UI_USER_INTERFACE_IDIOM()
• Do: Size Classes & UITraitCollections
• You will get split view support for free
• Your app will work on new screen sizes
• Do your layouts in IB, only resort to code you can’t do it in IB
• If you can: use Stack Views
• WWDC….
(Personal opinion)
Summary• Universal apps: think ahead (even if PO tells you MVP is iPhone or iPad
only)
• Bonus: teach responsive layouts to designers
• Don’t: UI_USER_INTERFACE_IDIOM()
• Do: Size Classes & UITraitCollections
• You will get split view support for free
• Your app will work on new screen sizes
• Do your layouts in IB, only resort to code you can’t do it in IB
• If you can: use Stack Views
• WWDC….
(Personal opinion)
Summary• Universal apps: think ahead (even if PO tells you MVP is iPhone or iPad
only)
• Bonus: teach responsive layouts to designers
• Don’t: UI_USER_INTERFACE_IDIOM()
• Do: Size Classes & UITraitCollections
• You will get split view support for free
• Your app will work on new screen sizes
• Do your layouts in IB, only resort to code you can’t do it in IB
• If you can: use Stack Views
• WWDC….
(Personal opinion)
Summary• Universal apps: think ahead (even if PO tells you MVP is iPhone or iPad
only)
• Bonus: teach responsive layouts to designers
• Don’t: UI_USER_INTERFACE_IDIOM()
• Do: Size Classes & UITraitCollections
• You will get split view support for free
• Your app will work on new screen sizes
• Do your layouts in IB, only resort to code you can’t do it in IB
• If you can: use Stack Views
• WWDC….
(Personal opinion)
Summary• Universal apps: think ahead (even if PO tells you MVP is iPhone or iPad
only)
• Bonus: teach responsive layouts to designers
• Don’t: UI_USER_INTERFACE_IDIOM()
• Do: Size Classes & UITraitCollections
• You will get split view support for free 💪👏😃
• Your app will work on new screen sizes
• Do your layouts in IB, only resort to code you can’t do it in IB
• If you can: use Stack Views
• WWDC….
(Personal opinion)
Summary• Universal apps: think ahead (even if PO tells you MVP is iPhone or iPad
only)
• Bonus: teach responsive layouts to designers
• Don’t: UI_USER_INTERFACE_IDIOM()
• Do: Size Classes & UITraitCollections
• You will get split view support for free 💪👏😃
• Your app will work on new screen sizes
• Do your layouts in IB, only resort to code you can’t do it in IB
• If you can: use Stack Views
• WWDC….
(Personal opinion)
Summary• Universal apps: think ahead (even if PO tells you MVP is iPhone or iPad
only)
• Bonus: teach responsive layouts to designers
• Don’t: UI_USER_INTERFACE_IDIOM()
• Do: Size Classes & UITraitCollections
• You will get split view support for free 💪👏😃
• Your app will work on new screen sizes
• Do your layouts in IB, only resort to code you can’t do it in IB
• If you can: use Stack Views
• WWDC….
(Personal opinion)
Summary• Universal apps: think ahead (even if PO tells you MVP is iPhone or iPad
only)
• Bonus: teach responsive layouts to designers
• Don’t: UI_USER_INTERFACE_IDIOM()
• Do: Size Classes & UITraitCollections
• You will get split view support for free 💪👏😃
• Your app will work on new screen sizes
• Do your layouts in IB, only resort to code you can’t do it in IB
• If you can: use Stack Views
• WWDC….
(Personal opinion)
Summary• Universal apps: think ahead (even if PO tells you MVP is iPhone or iPad
only)
• Bonus: teach responsive layouts to designers
• Don’t: UI_USER_INTERFACE_IDIOM()
• Do: Size Classes & UITraitCollections
• You will get split view support for free 💪👏😃
• Your app will work on new screen sizes
• Do your layouts in IB, only resort to code you can’t do it in IB
• If you can: use Stack Views
• WWDC….
(Personal opinion)
Thank Youhttps://github.com/bizz84/ResponsiveCollectionViews
Twitter: @biz84
blog: http://bizz84.github.io/
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