114 Customizing the Appearance of Uikit Controls
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These are confidential sessions—please refrain from streaming, blogging, or taking pictures Session 114 Customizing the Appearance of UIKit Controls Chris Parker iOS Frameworks Engineer 1
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Transcript of 114 Customizing the Appearance of Uikit Controls
These are confidential sessions—please refrain from streaming, blogging, or taking pictures
Session 114
Customizing the Appearanceof UIKit Controls
Chris ParkeriOS Frameworks Engineer
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Tint color
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Tint color
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Tint color
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Images
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setBackgroundImage:forBarMetrics:
typedef enum { UIBarMetricsDefault, UIBarMetricsLandscapePhone,} UIBarMetrics;
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titleTextAttributes:
leftBarButtonItems:rightBarButtonItems:
leftItemsSupplementBackButton
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titleTextAttributes:
leftBarButtonItems:rightBarButtonItems:
leftItemsSupplementBackButton
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titleTextAttributes:
leftBarButtonItems:rightBarButtonItems:
leftItemsSupplementBackButton
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setBackgroundImage:forState:barMetrics:
setBackButtonBackgroundImage:forState:barMetrics:
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setBackgroundImage:forState:barMetrics:
setBackButtonBackgroundImage:forState:barMetrics:
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Customizing instancesDemo
Marian GoldeeniOS Frameworks Mountain Biker
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Writing customization API is difficult
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Using customization API is difficult
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Consistent look
Easy
Support application features
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[aSlider setMinimumTrackTintColor:[UIColor redColor]];
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[[UISlider appearance] setMinimumTrackTintColor:[UIColor redColor]];
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[[UISlider appearance] setMinimumTrackTintColor:[UIColor redColor]];
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[[UISlider appearance] setMinimumTrackTintColor:[UIColor redColor]];
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Appearance ProxyUIAppearance.h
@protocol UIAppearance <NSObject>
+ (id)appearance;...
@end
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Appearance ProxyUIAppearance.h
@protocol UIAppearance <NSObject>
+ (id)appearance;...
@end
#define UI_APPEARANCE_SELECTOR
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Appearance proxy basicsDemo
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Zap
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Zap
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Appearance ProxyUIAppearance.h
@protocol UIAppearance <NSObject>
+ (id)appearance;+ (id)appearanceWhenContainedIn:(Class<UIAppearanceContainer>)containerClass, ...;
@end
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Appearance ProxyUIAppearance.h
@protocol UIAppearance <NSObject>
+ (id)appearance;+ (id)appearanceWhenContainedIn:(Class<UIAppearanceContainer>)containerClass, ...;
@end
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Containment
[[UIButton appearanceWhenContainedIn: [UINavigationController class], nil] setTitleColor:[UIColor redColor] forControlState:UIControlStateNormal];
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Containment
[[UIButton appearanceWhenContainedIn: [UINavigationController class], nil] setTitleColor:[UIColor redColor] forControlState:UIControlStateNormal];
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Zap
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Zap
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Containment
[[UIButton appearanceWhenContainedIn: [CustomViewController class], [UINavigationController class], nil] setTitleColor:[UIColor redColor] forControlState:UIControlStateNormal];
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Zap
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Zap
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ContainmentComposition rules
The button’s appearance……when contained in a CustomViewController…when contained in a UINavigationController
[[UIButton appearanceWhenContainedIn: [CustomViewController class], [UINavigationController class], nil] setTitleColor:[UIColor redColor] forControlState:UIControlStateNormal];
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ContainmentDemo
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What is Happening?Rule application
• Just before -[UIView layoutSubviews] is called…■ Rules are evaluated■ Customizations are applied
•Updates are applied at the time the hierarchy is changed■ At the hierarchy change point■ Does not update in real time
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Zap
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Zap[ setTitleColor: [UIColor greenColor] forControlState: UIControlStateNormal];
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Zap
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Zap
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[[UISlider appearance] setMinimumTrackTintColor:[UIColor redColor]];
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Zap
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Zap
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Bill DudneyApplication Frameworks [email protected]
DocumentationiOS Dev Centerhttp://developer.apple.com/devcenter/ios/
Apple Developer Forumshttp://devforums.apple.com
More Information
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