UISS - Speaker Deck

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Attractive things work better… When you wash and wax a car, it drives better, doesn’t it? Or at least feels like it does. David A. Norman

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Attractive things work better… When you wash and wax a car, it drives better, doesn’t it? Or at least feels like it does. David A. Norman

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Robert Wijas

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Robert Wijas

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Robert Wijas

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Robert Wijas

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UIAppearance on Steroids UISS

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Quick introduction UIAppearance

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Protocols @protocol UIAppearance ! + (id)appearance; ! + (id)appearanceWhenContainedIn:(Class )ContainerClass, ... NS_REQUIRES_NIL_TERMINATION; ! @end ! ! @protocol UIAppearanceContainer @end

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Properties - (void)setProperty:(PropertyType)property forAxis1:(IntegerType)axis1 axisN:(IntegerType)axisN; ! - (PropertyType)propertyForAxis1:(IntegerType)axis1 axisN:(IntegerType)axisN; #define UI_APPEARANCE_SELECTOR

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[[UIButton appearance] setTitleColor:[[UIColor whiteColor] colorWithAlphaComponent:0.800] forState:UIControlStateNormal]; [[UIButton appearance] setTitleColor:[UIColor whiteColor] forState:UIControlStateHighlighted]; [[UIButton appearance] setBackgroundImage:[[UIImage imageNamed:@"button-background-normal"] resizableImageWithCapInsets:UIEdgeInsetsMake(0.0, 10.0, 0.0, 10.0)] forState:UIControlStateNormal]; [[UIButton appearance] setBackgroundImage:[[UIImage imageNamed:@"button-background-highlighted"] resizableImageWithCapInsets:UIEdgeInsetsMake(0.0, 10.0, 0.0, 10.0)] forState:UIControlStateHighlighted]; [[UILabel appearanceWhenContainedIn:[UIButton class], nil] setFont:[UIFont fontWithName:@"Copperplate-Bold" size:18.0]]; [[UIButton appearance] setTitleEdgeInsets:UIEdgeInsetsMake(1.0, 0.0, 0.0, 0.0)];

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UISS JSON Syntax

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UISS JSON Syntax "UIButton":{ "titleColor:normal":["white", 0.8], "titleColor:highlighted":"white", ! "backgroundImage:normal": ["button-background-normal", [0,10,0,10]], "backgroundImage:highlighted": ["button-background-highlighted", [0,10,0,10]], ! "titleEdgeInsets": [1,0,0,0], ! "UILabel":{ "font":["Copperplate-Bold", 18] } }

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"UIButton":{ "titleColor:normal":["white", 0.8], "titleColor:highlighted":"white", ! "backgroundImage:normal": ["button-background-normal", [0,10,0,10]], "backgroundImage:highlighted": ["button-background-highlighted", [0,10,0,10]], ! "titleEdgeInsets": [1,0,0,0], ! "UILabel":{ "font":["Copperplate-Bold", 18] } } UIAppearance objects and containment

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"clear" [UIColor clearColor] ! ["#ffffff", 0.5] [UIColor colorWithRed:255.0f green:255.0f blue:255.0f alpha:0.5f] ! [0, 255, 255, 0.5] [UIColor colorWithRed:0.0f green:255.0f blue:255.0f alpha:0.5f] Colors

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14 [UIFont systemFontOfSize:14.0f] ! ["bold", 14] [UIFont boldSystemFontOfSize:14.0f] ! ["Georgia-Italic", 12] [UIFont fontWithName:@"Georgia-Italic" size:12.0f] Fonts

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"imageName" [UIImage imageNamed:@"imageName"] ! ["imageName", 1, 2, 3, 4] [[UIImage imageNamed:@"imageName"] resizableImageWithCapInsets:UIEdgeInsetsMake(1, 2, 3, 4)] Images

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"UINavigationBar":{ "Phone":{ "tintColor":"gray" }, "Pad":{ "tintColor":"lightGray" } } UI Idiom Branches

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"Variables":{ "tint":"blue", “toolbar”:{ "tintColor": "$tint" } }, "UINavigationBar":{ "tintColor": "$tint" }, "UITabBar":{ "tintColor": "$tint" }, "UIToolbar":”$toolbar” Variables

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"UISSDemoViewController":{ "-UIButton":{ "titleColor:normal":["white", 0.8], "titleColor:highlighted":"white" } } Comments

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Simple Setup

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one line of code Simple Setup

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Simple Setup [UISS configureWithDefaultJSONFile]; uiss.json

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How to make it really cool?

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How to make it really cool? Live updates

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Remote Style [UISS configureWithDefaultJSONFile]

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Remote Style [UISS configureWithURL:[NSURL URLWithString:@"http://localhost/uiss.json"]]

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How-to Remote uiss.json

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curl get.pow.cx | sh http://pow.cx

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UIAppearance - (NSMutableArray *)_appearanceInvocations;

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Swizzling TaggingAppearanceGeneralSetterIMP ()

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When the magic happens

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[UIView(Hierarchy) addSubview:] When the magic happens

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- (void)reloadAppearance { NSArray * windows = [UIApplication sharedApplication].windows; for (UIWindow *window in windows) { for (UIView *view in window.subviews) { [view removeFromSuperview]; [window addSubview:view]; } } } Reload appearance

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UIAppearance weakness Selectors

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subclassing UIAppearance weakness Selectors

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subclassing UIAppearance weakness custom properties Selectors

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Alternatives

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Alternatives

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Alternatives https://github.com/tombenner/nui

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Layout

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Layout Auto

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attribute1 == multiplier × attribute2 + constant

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attribute1 == multiplier × attribute2 + constant >= <= Left Right Top Bottom Leading Trailing Width Height CenterX CenterY Baseline Left Right Top Bottom Leading Trailing Width Height CenterX CenterY Baseline @500