前言
When someone purchases an iPhone, they are buying into Apple’s philosophy that things that work well should look good, too. The same goes for when we choose to develop for iOS—a sloppy UI reflects poorly on the underlying code.
自從iOS5之后，UIAppearance協議的出現讓我們的可以快速的修改系統控件的UI，使整個APP的界面簡潔，風格統一，美觀，有全局的tabBar、navigationBar、toolBar顏色和文字等各種屬性。
UIAppearance是什么
UIApearance實際上是一個協議，我們可以用它來獲取一個類的外觀代理(appearance proxy)。為什么說是一個類，而不明確說是一個視圖或控件呢？這是因為有些非視圖對象(如UIBarButtonItem)也可以實現這個協議，來定義其所包含的視圖對象的外觀。我們可以給這個類的外觀代理發送一個修改消息，來自定義一個類的實例的外觀。
UIAppearance使用方法
UIAppearance有兩種使用方法：
- 1.直接遵守UIAppearance協議的類
UINavigationBar:
[[UINavigationBar appearance] setBarTintColor:myNavBarBackgroundColor];
- 2.對于類中包含一個遵守UIAppearance協議的對象或者UIView的層級結構中含有遵守UIAppearance協議的子控件，可以使用UIAppearance方法appearanceWhenContainedIn：獲取協議對象，設置相關屬性
[[UIBarButtonItem appearanceWhenContainedIn:[UINavigationBar class], nil] setBackgroundImage:myNavBarButtonBackgroundImage forState:state barMetrics:metrics];
[[UIBarButtonItem appearanceWhenContainedIn:[UINavigationBar class], [UIPopoverController class], nil] setBackgroundImage:myPopoverNavBarButtonBackgroundImage forState:state barMetrics:metrics];
[[UIBarButtonItem appearanceWhenContainedIn:[UIToolbar class], nil] setBackgroundImage:myToolbarButtonBackgroundImage forState:state barMetrics:metrics];
[[UIBarButtonItem appearanceWhenContainedIn:[UIToolbar class], [UIPopoverController class], nil] setBackgroundImage:myPopoverToolbarButtonBackgroundImage forState:sta
常用和支持的類
列舉出來它支持的類
1.UIActivitiIndicatorView
2.UIBarButtonItem
3.UIBarItem
4.UINavgationBar
5.UIPopoverControll
6.UIProgressView
7.UISearchBar
8.UISegmentControll
9.UISlider
10.UISwitch
11.UITabBar
12.UITabBarItem
13.UIToolBar
14.UIView
15.UIViewController
遵守UIAppearance協議的對象和屬性、方法列表
終端命令：
$cd /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/UIKit.framework/Headers
$grep -H UI_APPEARANCE_SELECTOR ./ | sed 's/ __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_5_0) UI_APPEARANCE_SELECTOR;//'
UIActivityIndicatorView:
/UIActivityIndicatorView.h:@property (nullable, readwrite, nonatomic, strong) UIColor *color NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
UIBarButtonItem.h
./UIBarButtonItem.h:- (void)setBackgroundImage:(nullable UIImage *)backgroundImage forState:(UIControlState)state barMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UIBarButtonItem.h:- (nullable UIImage *)backgroundImageForState:(UIControlState)state barMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UIBarButtonItem.h:- (void)setBackgroundImage:(nullable UIImage *)backgroundImage forState:(UIControlState)state style:(UIBarButtonItemStyle)style barMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(6_0) UI_APPEARANCE_SELECTOR;
./UIBarButtonItem.h:- (nullable UIImage *)backgroundImageForState:(UIControlState)state style:(UIBarButtonItemStyle)style barMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(6_0) UI_APPEARANCE_SELECTOR;
./UIBarButtonItem.h:- (void)setBackgroundVerticalPositionAdjustment:(CGFloat)adjustment forBarMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UIBarButtonItem.h:- (CGFloat)backgroundVerticalPositionAdjustmentForBarMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UIBarButtonItem.h:- (void)setTitlePositionAdjustment:(UIOffset)adjustment forBarMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UIBarButtonItem.h:- (UIOffset)titlePositionAdjustmentForBarMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UIBarButtonItem.h:- (void)setBackButtonBackgroundImage:(nullable UIImage *)backgroundImage forState:(UIControlState)state barMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR __TVOS_PROHIBITED;
./UIBarButtonItem.h:- (nullable UIImage *)backButtonBackgroundImageForState:(UIControlState)state barMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR __TVOS_PROHIBITED;
./UIBarButtonItem.h:- (void)setBackButtonTitlePositionAdjustment:(UIOffset)adjustment forBarMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR __TVOS_PROHIBITED;
./UIBarButtonItem.h:- (UIOffset)backButtonTitlePositionAdjustmentForBarMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR __TVOS_PROHIBITED;
./UIBarButtonItem.h:- (void)setBackButtonBackgroundVerticalPositionAdjustment:(CGFloat)adjustment forBarMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR __TVOS_PROHIBITED;
./UIBarButtonItem.h:- (CGFloat)backButtonBackgroundVerticalPositionAdjustmentForBarMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR __TVOS_PROHIBITED;
./UIBarItem.h:- (void)setTitleTextAttributes:(nullable NSDictionary<NSString *,id> *)attributes forState:(UIControlState)state NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UIBarItem.h:- (nullable NSDictionary<NSString *,id> *)titleTextAttributesForState:(UIControlState)state NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
UIButton
./UIButton.h:@property(nonatomic)UIEdgeInsets contentEdgeInsets UI_APPEARANCE_SELECTOR; // default is UIEdgeInsetsZero. On tvOS 10 or later, default is nonzero except for custom buttons.
./UIButton.h:- (void)setTitleColor:(nullable UIColor *)color forState:(UIControlState)state UI_APPEARANCE_SELECTOR; // default if nil. use opaque white
./UIButton.h:- (void)setTitleShadowColor:(nullable UIColor *)color forState:(UIControlState)state UI_APPEARANCE_SELECTOR; // default is nil. use 50% black
./UIButton.h:- (void)setBackgroundImage:(nullable UIImage *)image forState:(UIControlState)state UI_APPEARANCE_SELECTOR; // default is nil
UINavigationBar:
./UINavigationBar.h:@property(nonatomic,assign) UIBarStyle barStyle UI_APPEARANCE_SELECTOR __TVOS_PROHIBITED;
./UINavigationBar.h:@property(nonatomic,assign,getter=isTranslucent) BOOL translucent NS_AVAILABLE_IOS(3_0) UI_APPEARANCE_SELECTOR; // Default is NO on iOS 6 and earlier. Always YES if barStyle is set to UIBarStyleBlackTranslucent
./UINavigationBar.h:@property(nullable, nonatomic,strong) UIColor *barTintColor NS_AVAILABLE_IOS(7_0) UI_APPEARANCE_SELECTOR; // default is nil
./UINavigationBar.h:- (void)setBackgroundImage:(nullable UIImage *)backgroundImage forBarPosition:(UIBarPosition)barPosition barMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(7_0) UI_APPEARANCE_SELECTOR;
./UINavigationBar.h:- (nullable UIImage *)backgroundImageForBarPosition:(UIBarPosition)barPosition barMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(7_0) UI_APPEARANCE_SELECTOR;
./UINavigationBar.h:- (void)setBackgroundImage:(nullable UIImage *)backgroundImage forBarMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UINavigationBar.h:- (nullable UIImage *)backgroundImageForBarMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UINavigationBar.h:@property(nullable, nonatomic,strong) UIImage *shadowImage NS_AVAILABLE_IOS(6_0) UI_APPEARANCE_SELECTOR;
./UINavigationBar.h:@property(nullable,nonatomic,copy) NSDictionary<NSString *,id> *titleTextAttributes NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UINavigationBar.h:- (void)setTitleVerticalPositionAdjustment:(CGFloat)adjustment forBarMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UINavigationBar.h:- (CGFloat)titleVerticalPositionAdjustmentForBarMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UINavigationBar.h:@property(nullable,nonatomic,strong) UIImage *backIndicatorImage NS_AVAILABLE_IOS(7_0) UI_APPEARANCE_SELECTOR __TVOS_PROHIBITED;
./UINavigationBar.h:@property(nullable,nonatomic,strong) UIImage *backIndicatorTransitionMaskImage NS_AVAILABLE_IOS(7_0) UI_APPEARANCE_SELECTOR __TVOS_PROHIBITED;
UIPageControll:
./UIPageControl.h:@property(nullable, nonatomic,strong) UIColor *pageIndicatorTintColor NS_AVAILABLE_IOS(6_0) UI_APPEARANCE_SELECTOR;
./UIPageControl.h:@property(nullable, nonatomic,strong) UIColor *currentPageIndicatorTintColor NS_AVAILABLE_IOS(6_0) UI_APPEARANCE_SELECTOR;
UIProgressView:
./UIProgressView.h:@property(nonatomic, strong, nullable) UIColor* progressTintColor NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UIProgressView.h:@property(nonatomic, strong, nullable) UIColor* trackTintColor NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UIProgressView.h:@property(nonatomic, strong, nullable) UIImage* progressImage NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UIProgressView.h:@property(nonatomic, strong, nullable) UIImage* trackImage NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
UIRefreshControl:
./UIRefreshControl.h:@property (nullable, nonatomic, strong) NSAttributedString *attributedTitle UI_APPEARANCE_SELECTOR;
UISearchBar:
./UISearchBar.h:@property(nullable, nonatomic,strong) UIColor *barTintColor NS_AVAILABLE_IOS(7_0) UI_APPEARANCE_SELECTOR; // default is nil
./UISearchBar.h:@property(nullable, nonatomic,strong) UIImage *backgroundImage NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UISearchBar.h:@property(nullable, nonatomic,strong) UIImage *scopeBarBackgroundImage NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UISearchBar.h:- (void)setBackgroundImage:(nullable UIImage *)backgroundImage forBarPosition:(UIBarPosition)barPosition barMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(7_0) UI_APPEARANCE_SELECTOR; // Use UIBarMetricsDefaultPrompt to set a separate backgroundImage for a search bar with a prompt
./UISearchBar.h:- (nullable UIImage *)backgroundImageForBarPosition:(UIBarPosition)barPosition barMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(7_0) UI_APPEARANCE_SELECTOR;
./UISearchBar.h:- (void)setSearchFieldBackgroundImage:(nullable UIImage *)backgroundImage forState:(UIControlState)state NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UISearchBar.h:- (nullable UIImage *)searchFieldBackgroundImageForState:(UIControlState)state NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UISearchBar.h:- (void)setImage:(nullable UIImage *)iconImage forSearchBarIcon:(UISearchBarIcon)icon state:(UIControlState)state NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UISearchBar.h:- (nullable UIImage *)imageForSearchBarIcon:(UISearchBarIcon)icon state:(UIControlState)state NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UISearchBar.h:- (void)setScopeBarButtonBackgroundImage:(nullable UIImage *)backgroundImage forState:(UIControlState)state NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UISearchBar.h:- (nullable UIImage *)scopeBarButtonBackgroundImageForState:(UIControlState)state NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UISearchBar.h:- (void)setScopeBarButtonDividerImage:(nullable UIImage *)dividerImage forLeftSegmentState:(UIControlState)leftState rightSegmentState:(UIControlState)rightState NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UISearchBar.h:- (nullable UIImage *)scopeBarButtonDividerImageForLeftSegmentState:(UIControlState)leftState rightSegmentState:(UIControlState)rightState NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UISearchBar.h:- (void)setScopeBarButtonTitleTextAttributes:(nullable NSDictionary<NSString *, id> *)attributes forState:(UIControlState)state NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UISearchBar.h:- (nullable NSDictionary<NSString *, id> *)scopeBarButtonTitleTextAttributesForState:(UIControlState)state NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UISearchBar.h:@property(nonatomic) UIOffset searchFieldBackgroundPositionAdjustment NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UISearchBar.h:@property(nonatomic) UIOffset searchTextPositionAdjustment NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UISearchBar.h:- (void)setPositionAdjustment:(UIOffset)adjustment forSearchBarIcon:(UISearchBarIcon)icon NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UISearchBar.h:- (UIOffset)positionAdjustmentForSearchBarIcon:(UISearchBarIcon)icon NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
UISegmentedControl
./UISegmentedControl.h:- (void)setBackgroundImage:(nullable UIImage *)backgroundImage forState:(UIControlState)state barMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UISegmentedControl.h:- (nullable UIImage *)backgroundImageForState:(UIControlState)state barMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UISegmentedControl.h:- (void)setDividerImage:(nullable UIImage *)dividerImage forLeftSegmentState:(UIControlState)leftState rightSegmentState:(UIControlState)rightState barMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UISegmentedControl.h:- (nullable UIImage *)dividerImageForLeftSegmentState:(UIControlState)leftState rightSegmentState:(UIControlState)rightState barMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UISegmentedControl.h:- (void)setTitleTextAttributes:(nullable NSDictionary *)attributes forState:(UIControlState)state NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UISegmentedControl.h:- (nullable NSDictionary *)titleTextAttributesForState:(UIControlState)state NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UISegmentedControl.h:- (void)setContentPositionAdjustment:(UIOffset)adjustment forSegmentType:(UISegmentedControlSegment)leftCenterRightOrAlone barMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UISegmentedControl.h:- (UIOffset)contentPositionAdjustmentForSegmentType:(UISegmentedControlSegment)leftCenterRightOrAlone barMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UISlider.h:@property(nullable, nonatomic,strong) UIColor *minimumTrackTintColor NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
UISlider:
./UISlider.h:@property(nullable, nonatomic,strong) UIColor *maximumTrackTintColor NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UISlider.h:@property(nullable, nonatomic,strong) UIColor *thumbTintColor NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
UIStepper:
./UIStepper.h:- (void)setBackgroundImage:(nullable UIImage*)image forState:(UIControlState)state NS_AVAILABLE_IOS(6_0) UI_APPEARANCE_SELECTOR;
./UIStepper.h:- (nullable UIImage*)backgroundImageForState:(UIControlState)state NS_AVAILABLE_IOS(6_0) UI_APPEARANCE_SELECTOR;
./UIStepper.h:- (void)setDividerImage:(nullable UIImage*)image forLeftSegmentState:(UIControlState)leftState rightSegmentState:(UIControlState)rightState NS_AVAILABLE_IOS(6_0) UI_APPEARANCE_SELECTOR;
./UIStepper.h:- (nullable UIImage*)dividerImageForLeftSegmentState:(UIControlState)state rightSegmentState:(UIControlState)state NS_AVAILABLE_IOS(6_0) UI_APPEARANCE_SELECTOR;
./UIStepper.h:- (void)setIncrementImage:(nullable UIImage *)image forState:(UIControlState)state NS_AVAILABLE_IOS(6_0) UI_APPEARANCE_SELECTOR;
./UIStepper.h:- (nullable UIImage *)incrementImageForState:(UIControlState)state NS_AVAILABLE_IOS(6_0) UI_APPEARANCE_SELECTOR;
./UIStepper.h:- (void)setDecrementImage:(nullable UIImage *)image forState:(UIControlState)state NS_AVAILABLE_IOS(6_0) UI_APPEARANCE_SELECTOR;
./UIStepper.h:- (nullable UIImage *)decrementImageForState:(UIControlState)state NS_AVAILABLE_IOS(6_0) UI_APPEARANCE_SELECTOR;
UISwitch:
./UISwitch.h:@property(nullable, nonatomic, strong) UIColor *onTintColor NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UISwitch.h:@property(nullable, nonatomic, strong) UIColor *thumbTintColor NS_AVAILABLE_IOS(6_0) UI_APPEARANCE_SELECTOR;
./UISwitch.h:@property(nullable, nonatomic, strong) UIImage *onImage NS_AVAILABLE_IOS(6_0) UI_APPEARANCE_SELECTOR;
./UISwitch.h:@property(nullable, nonatomic, strong) UIImage *offImage NS_AVAILABLE_IOS(6_0) UI_APPEARANCE_SELECTOR;
UITabBar:
./UITabBar.h:@property(nullable, nonatomic, strong) UIColor *barTintColor NS_AVAILABLE_IOS(7_0) UI_APPEARANCE_SELECTOR; // default is nil
./UITabBar.h:@property (nonatomic, readwrite, copy, nullable) UIColor *unselectedItemTintColor NS_AVAILABLE_IOS(10_0) UI_APPEARANCE_SELECTOR;
./UITabBar.h:@property(nullable, nonatomic, strong) UIColor *selectedImageTintColor NS_DEPRECATED_IOS(5_0,8_0,"Use tintColor") UI_APPEARANCE_SELECTOR __TVOS_PROHIBITED;
./UITabBar.h:@property(nullable, nonatomic, strong) UIImage *backgroundImage NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UITabBar.h:@property(nullable, nonatomic, strong) UIImage *selectionIndicatorImage NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UITabBar.h:@property(nullable, nonatomic, strong) UIImage *shadowImage NS_AVAILABLE_IOS(6_0) UI_APPEARANCE_SELECTOR;
./UITabBar.h:@property(nonatomic) UITabBarItemPositioning itemPositioning NS_AVAILABLE_IOS(7_0) UI_APPEARANCE_SELECTOR __TVOS_PROHIBITED;
./UITabBar.h:@property(nonatomic) CGFloat itemWidth NS_AVAILABLE_IOS(7_0) UI_APPEARANCE_SELECTOR;
./UITabBar.h:@property(nonatomic) CGFloat itemSpacing NS_AVAILABLE_IOS(7_0) UI_APPEARANCE_SELECTOR;
./UITabBar.h:@property(nonatomic) UIBarStyle barStyle NS_AVAILABLE_IOS(7_0) UI_APPEARANCE_SELECTOR __TVOS_PROHIBITED;
UITabBarItem:
./UITabBarItem.h:@property (nonatomic, readwrite, assign) UIOffset titlePositionAdjustment NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UITabBarItem.h:@property (nonatomic, readwrite, copy, nullable) UIColor *badgeColor NS_AVAILABLE_IOS(10_0) UI_APPEARANCE_SELECTOR;
./UITabBarItem.h:- (void)setBadgeTextAttributes:(nullable NSDictionary<NSString *,id> *)textAttributes forState:(UIControlState)state NS_AVAILABLE_IOS(10_0) UI_APPEARANCE_SELECTOR;
./UITabBarItem.h:- (nullable NSDictionary<NSString *,id> *)badgeTextAttributesForState:(UIControlState)state NS_AVAILABLE_IOS(10_0) UI_APPEARANCE_SELECTOR;
UITableView:
./UITableView.h:@property (nonatomic) UIEdgeInsets separatorInset NS_AVAILABLE_IOS(7_0) UI_APPEARANCE_SELECTOR; // allows customization of the frame of cell separators
./UITableView.h:@property (nonatomic, strong, nullable) UIColor *sectionIndexColor NS_AVAILABLE_IOS(6_0) UI_APPEARANCE_SELECTOR; // color used for text of the section index
./UITableView.h:@property (nonatomic, strong, nullable) UIColor *sectionIndexBackgroundColor NS_AVAILABLE_IOS(7_0) UI_APPEARANCE_SELECTOR; // the background color of the section index while not being touched
./UITableView.h:@property (nonatomic, strong, nullable) UIColor *sectionIndexTrackingBackgroundColor NS_AVAILABLE_IOS(6_0) UI_APPEARANCE_SELECTOR; // the background color of the section index while it is being touched
./UITableView.h:@property (nonatomic, strong, nullable) UIColor *separatorColor UI_APPEARANCE_SELECTOR __TVOS_PROHIBITED; // default is the standard separator gray
./UITableView.h:@property (nonatomic, copy, nullable) UIVisualEffect *separatorEffect NS_AVAILABLE_IOS(8_0) UI_APPEARANCE_SELECTOR __TVOS_PROHIBITED; // effect to apply to table separators
UITbaleViewCell:
./UITableViewCell.h:@property (nonatomic) UIEdgeInsets separatorInset NS_AVAILABLE_IOS(7_0) UI_APPEARANCE_SELECTOR __TVOS_PROHIBITED; // allows customization of the separator frame
./UITableViewCell.h:@property (nonatomic) UITableViewCellFocusStyle focusStyle NS_AVAILABLE_IOS(9_0) UI_APPEARANCE_SELECTOR;
UIToolbar:
./UIToolbar.h:@property(nonatomic) UIBarStyle barStyle UI_APPEARANCE_SELECTOR __TVOS_PROHIBITED; // default is UIBarStyleDefault (blue)
./UIToolbar.h:@property(nonatomic,assign,getter=isTranslucent) BOOL translucent NS_AVAILABLE_IOS(3_0) UI_APPEARANCE_SELECTOR; // Default is NO on iOS 6 and earlier. Always YES if barStyle is set to UIBarStyleBlackTranslucent
./UIToolbar.h:@property(nullable, nonatomic, strong) UIColor *barTintColor NS_AVAILABLE_IOS(7_0) UI_APPEARANCE_SELECTOR; // default is nil
./UIToolbar.h:- (void)setBackgroundImage:(nullable UIImage *)backgroundImage forToolbarPosition:(UIBarPosition)topOrBottom barMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UIToolbar.h:- (nullable UIImage *)backgroundImageForToolbarPosition:(UIBarPosition)topOrBottom barMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
./UIToolbar.h:- (void)setShadowImage:(nullable UIImage *)shadowImage forToolbarPosition:(UIBarPosition)topOrBottom NS_AVAILABLE_IOS(6_0) UI_APPEARANCE_SELECTOR;
./UIToolbar.h:- (nullable UIImage *)shadowImageForToolbarPosition:(UIBarPosition)topOrBottom NS_AVAILABLE_IOS(6_0) UI_APPEARANCE_SELECTOR;
UIView:
./UIView.h:@property(nullable, nonatomic,copy) UIColor *backgroundColor UI_APPEARANCE_SELECTOR; // default is nil. Can be useful with the appearance proxy on custom UIView subclasses.
關于自定義相關遵守UIAppearance協議的相關類
可以參考這幾篇深度好文UIAppearance for Custom Views、南峰子的文章 UIKit: UIApearance
