ios开发 之 UIView详解
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UIView详解
//// UIView.h// ZMHeaderFile//// Created by ZengZhiming on 2017/5/22.// Copyright © 2017年 菜鸟基地. All rights reserved.//// 详解 UIResponder.h// Version iOS 10.3//#import <Foundation/Foundation.h>#import <QuartzCore/QuartzCore.h>#import <UIKit/UIResponder.h>#import <UIKit/UIInterface.h>#import <UIKit/UIKitDefines.h>#import <UIKit/UIAppearance.h>#import <UIKit/UIDynamicBehavior.h>#import <UIKit/NSLayoutConstraint.h>#import <UIKit/UITraitCollection.h>#import <UIKit/UIFocus.h>NS_ASSUME_NONNULL_BEGIN/** 动画的曲线枚举 */typedef NS_ENUM(NSInteger, UIViewAnimationCurve) { UIViewAnimationCurveEaseInOut, //!< 慢进慢出（默认值）. UIViewAnimationCurveEaseIn, //!< 慢进. UIViewAnimationCurveEaseOut, //!< 慢出. UIViewAnimationCurveLinear, //!< 匀速.};//!< UIView内容填充模式.typedef NS_ENUM(NSInteger, UIViewContentMode) { UIViewContentModeScaleToFill, //!< 缩放内容到合适比例大小. UIViewContentModeScaleAspectFit, //!< 缩放内容到合适的大小，边界多余部分透明. UIViewContentModeScaleAspectFill, //!< 缩放内容填充到指定大小，边界多余的部分省略. UIViewContentModeRedraw, //!< 重绘视图边界 (需调用 -setNeedsDisplay). UIViewContentModeCenter, //!< 视图保持等比缩放. UIViewContentModeTop, //!< 视图顶部对齐. UIViewContentModeBottom, //!< 视图底部对齐. UIViewContentModeLeft, //!< 视图左侧对齐. UIViewContentModeRight, //!< 视图右侧对齐. UIViewContentModeTopLeft, //!< 视图左上角对齐. UIViewContentModeTopRight, //!< 视图右上角对齐. UIViewContentModeBottomLeft, //!< 视图左下角对齐. UIViewContentModeBottomRight, //!< 视图右下角对齐.};/** UIView动画过渡效果 */typedef NS_ENUM(NSInteger, UIViewAnimationTransition) { UIViewAnimationTransitionNone, //!< 无效果. UIViewAnimationTransitionFlipFromLeft, //!< 沿视图垂直中心轴左到右移动. UIViewAnimationTransitionFlipFromRight, //!< 沿视图垂直中心轴右到左移动. UIViewAnimationTransitionCurlUp, //!< 由底部向上卷起. UIViewAnimationTransitionCurlDown, //!< 由顶部向下展开.};/** 自动调整大小方式 */typedef NS_OPTIONS(NSUInteger, UIViewAutoresizing) { UIViewAutoresizingNone = 0, //!< 不自动调整. UIViewAutoresizingFlexibleLeftMargin = 1 << 0,//!< 自动调整与superView左边的距离，保证与superView右边的距离不变. UIViewAutoresizingFlexibleWidth = 1 << 1,//!< 自动调整自己的宽度，保证与superView左边和右边的距离不变. UIViewAutoresizingFlexibleRightMargin = 1 << 2,//!< 自动调整与superView的右边距离，保证与superView左边的距离不变. UIViewAutoresizingFlexibleTopMargin = 1 << 3,//!< 自动调整与superView顶部的距离，保证与superView底部的距离不变. UIViewAutoresizingFlexibleHeight = 1 << 4,//!< 自动调整自己的高度，保证与superView顶部和底部的距离不变. UIViewAutoresizingFlexibleBottomMargin = 1 << 5 //!< 自动调整与superView底部的距离，也就是说，与superView顶部的距离不变.};/** UIView动画选项 */typedef NS_OPTIONS(NSUInteger, UIViewAnimationOptions) { UIViewAnimationOptionLayoutSubviews = 1 << 0, //!< 动画过程中保证子视图跟随运动. UIViewAnimationOptionAllowUserInteraction = 1 << 1, //!< 动画过程中允许用户交互. UIViewAnimationOptionBeginFromCurrentState = 1 << 2, //!< 所有视图从当前状态开始运行. UIViewAnimationOptionRepeat = 1 << 3, //!< 重复运行动画. UIViewAnimationOptionAutoreverse = 1 << 4, //!< 动画运行到结束点后仍然以动画方式回到初始点. UIViewAnimationOptionOverrideInheritedDuration = 1 << 5, //!< 忽略嵌套动画时间设置. UIViewAnimationOptionOverrideInheritedCurve = 1 << 6, //!< 忽略嵌套动画速度设置. UIViewAnimationOptionAllowAnimatedContent = 1 << 7, //!< 动画过程中重绘视图（注意仅仅适用于转场动画）. UIViewAnimationOptionShowHideTransitionViews = 1 << 8, //!< 视图切换时直接隐藏旧视图、显示新视图，而不是将旧视图从父视图移除（仅仅适用于转场动画）. UIViewAnimationOptionOverrideInheritedOptions = 1 << 9, //!< 不继承父动画设置或动画类型. UIViewAnimationOptionCurveEaseInOut = 0 << 16, //!< 动画先缓慢，然后逐渐加速. UIViewAnimationOptionCurveEaseIn = 1 << 16, //!< 动画逐渐变慢. UIViewAnimationOptionCurveEaseOut = 2 << 16, //!< 动画逐渐加速. UIViewAnimationOptionCurveLinear = 3 << 16, //!< 动画匀速执行，默认值. UIViewAnimationOptionTransitionNone = 0 << 20, //!< 没有转场动画效果. UIViewAnimationOptionTransitionFlipFromLeft = 1 << 20, //!< 从左侧翻转效果. UIViewAnimationOptionTransitionFlipFromRight = 2 << 20, //!< 从右侧翻转效果. UIViewAnimationOptionTransitionCurlUp = 3 << 20, //!< 向后翻页的动画过渡效果. UIViewAnimationOptionTransitionCurlDown = 4 << 20, //!< 向前翻页的动画过渡效果. UIViewAnimationOptionTransitionCrossDissolve = 5 << 20, //!< 旧视图溶解消失显示下一个新视图的效果. UIViewAnimationOptionTransitionFlipFromTop = 6 << 20, //!< 从上方翻转效果. UIViewAnimationOptionTransitionFlipFromBottom = 7 << 20, //!< 从底部翻转效果. UIViewAnimationOptionPreferredFramesPerSecondDefault = 0 << 24, //!< 默认的帧每秒. UIViewAnimationOptionPreferredFramesPerSecond60 = 3 << 24, //!< 60帧每秒的帧速率. UIViewAnimationOptionPreferredFramesPerSecond30 = 7 << 24, //!< 30帧每秒的帧速率. } NS_ENUM_AVAILABLE_IOS(4_0);typedef NS_OPTIONS(NSUInteger, UIViewKeyframeAnimationOptions) { UIViewKeyframeAnimationOptionLayoutSubviews = UIViewAnimationOptionLayoutSubviews, //!< 动画过程中保证子视图跟随运动. UIViewKeyframeAnimationOptionAllowUserInteraction = UIViewAnimationOptionAllowUserInteraction, //!< 动画过程中允许用户交互. UIViewKeyframeAnimationOptionBeginFromCurrentState = UIViewAnimationOptionBeginFromCurrentState, //!< 所有视图从当前状态开始运行. UIViewKeyframeAnimationOptionRepeat = UIViewAnimationOptionRepeat, //!< 重复运行动画. UIViewKeyframeAnimationOptionAutoreverse = UIViewAnimationOptionAutoreverse, //!< 动画运行到结束点后仍然以动画方式回到初始点. UIViewKeyframeAnimationOptionOverrideInheritedDuration = UIViewAnimationOptionOverrideInheritedDuration, //!< 忽略嵌套动画时间设置. UIViewKeyframeAnimationOptionOverrideInheritedOptions = UIViewAnimationOptionOverrideInheritedOptions, //!< 不继承父动画设置或动画类型. UIViewKeyframeAnimationOptionCalculationModeLinear = 0 << 10, //!< 连续运算模式, 默认. UIViewKeyframeAnimationOptionCalculationModeDiscrete = 1 << 10, //!< 离散运算模式. UIViewKeyframeAnimationOptionCalculationModePaced = 2 << 10, //!< 均匀执行运算模式. UIViewKeyframeAnimationOptionCalculationModeCubic = 3 << 10, //!< 平滑运算模式. UIViewKeyframeAnimationOptionCalculationModeCubicPaced = 4 << 10 //!< 平滑均匀运算模式.} NS_ENUM_AVAILABLE_IOS(7_0);typedef NS_ENUM(NSUInteger, UISystemAnimation) { UISystemAnimationDelete, //!< 系统删除动画} NS_ENUM_AVAILABLE_IOS(7_0);typedef NS_ENUM(NSInteger, UIViewTintAdjustmentMode) { UIViewTintAdjustmentModeAutomatic, //!< 自动的，与父视图相同. UIViewTintAdjustmentModeNormal, //!< 未经修改的. UIViewTintAdjustmentModeDimmed, //!< 饱和、暗淡的原始色.} NS_ENUM_AVAILABLE_IOS(7_0);typedef NS_ENUM(NSInteger, UISemanticContentAttribute) { UISemanticContentAttributeUnspecified = 0, //!< 未指定，默认值 UISemanticContentAttributePlayback, //!< 打开/ RW / FF等播放控制按钮 UISemanticContentAttributeSpatial, //!< 控制导致某种形式的定向改变UI中,如分段控制文本对齐方式或在游戏中方向键 UISemanticContentAttributeForceLeftToRight, //!< 视图总是从左向右布局. UISemanticContentAttributeForceRightToLeft //!< 视图总是从右向左布局.} NS_ENUM_AVAILABLE_IOS(9_0);@protocol UICoordinateSpace <NSObject>/** 将像素point由point所在视图转换到目标视图view中，返回在目标视图view中的像素值 */- (CGPoint)convertPoint:(CGPoint)point toCoordinateSpace:(id <UICoordinateSpace>)coordinateSpace NS_AVAILABLE_IOS(8_0);/** 将像素point由point所在视图转换到目标视图view中，返回在目标视图view中的像素值 */- (CGPoint)convertPoint:(CGPoint)point fromCoordinateSpace:(id <UICoordinateSpace>)coordinateSpace NS_AVAILABLE_IOS(8_0);/** 将rect由rect所在视图转换到目标视图view中，返回在目标视图view中的rect */- (CGRect)convertRect:(CGRect)rect toCoordinateSpace:(id <UICoordinateSpace>)coordinateSpace NS_AVAILABLE_IOS(8_0);/** 将rect从view中转换到当前视图中，返回在当前视图中的rect */- (CGRect)convertRect:(CGRect)rect fromCoordinateSpace:(id <UICoordinateSpace>)coordinateSpace NS_AVAILABLE_IOS(8_0);/** 获取bounds */@property (readonly, nonatomic) CGRect bounds NS_AVAILABLE_IOS(8_0);@end@class UIBezierPath, UIEvent, UIWindow, UIViewController, UIColor, UIGestureRecognizer, UIMotionEffect, CALayer, UILayoutGuide;NS_CLASS_AVAILABLE_IOS(2_0) @interface UIView : UIResponder <NSCoding, UIAppearance, UIAppearanceContainer, UIDynamicItem, UITraitEnvironment, UICoordinateSpace, UIFocusItem, CALayerDelegate>/** 返回主layer所使用的类 */#if UIKIT_DEFINE_AS_PROPERTIES@property(class, nonatomic, readonly) Class layerClass;#else+ (Class)layerClass;#endif/** 通过Frame初始化UI对象 */- (instancetype)initWithFrame:(CGRect)frame NS_DESIGNATED_INITIALIZER;/** 用于xib初始化 */- (nullable instancetype)initWithCoder:(NSCoder *)aDecoder NS_DESIGNATED_INITIALIZER;/** 设置用户交互，默认YES允许用户交互 */@property(nonatomic,getter=isUserInteractionEnabled) BOOL userInteractionEnabled;/** 控件标记(父控件可以通过tag找到对应的子控件)，默认为0 */@property(nonatomic) NSInteger tag;/** 视图图层(可以用来设置圆角效果/阴影效果) */@property(nonatomic,readonly,strong) CALayer *layer;/** 返回是否可以成为焦点, 默认NO */#if UIKIT_DEFINE_AS_PROPERTIES@property(nonatomic,readonly) BOOL canBecomeFocused NS_AVAILABLE_IOS(9_0);#else- (BOOL)canBecomeFocused NS_AVAILABLE_IOS(9_0);#endif/** 是否可以被聚焦 */@property (readonly, nonatomic, getter=isFocused) BOOL focused NS_AVAILABLE_IOS(9_0);/** 左右滑动翻转效果 */@property (nonatomic) UISemanticContentAttribute semanticContentAttribute NS_AVAILABLE_IOS(9_0);/** 获取视图的方向 */+ (UIUserInterfaceLayoutDirection)userInterfaceLayoutDirectionForSemanticContentAttribute:(UISemanticContentAttribute)attribute NS_AVAILABLE_IOS(9_0);/** 获取相对于指定视图的界面方向 */+ (UIUserInterfaceLayoutDirection)userInterfaceLayoutDirectionForSemanticContentAttribute:(UISemanticContentAttribute)semanticContentAttribute relativeToLayoutDirection:(UIUserInterfaceLayoutDirection)layoutDirection NS_AVAILABLE_IOS(10_0);/** 返回即时内容的布局的方向 */@property (readonly, nonatomic) UIUserInterfaceLayoutDirection effectiveUserInterfaceLayoutDirection NS_AVAILABLE_IOS(10_0);@end@interface UIView(UIViewGeometry)/** 位置和尺寸(以父控件的左上角为坐标原点(0, 0)) */@property(nonatomic) CGRect frame;/** 位置和尺寸(以自己的左上角为坐标原点(0, 0)) */@property(nonatomic) CGRect bounds;/** 中心点(以父控件的左上角为坐标原点(0, 0)) */@property(nonatomic) CGPoint center;/** 变形属性(平移\缩放\旋转) */@property(nonatomic) CGAffineTransform transform;/** 视图内容的缩放比例 */@property(nonatomic) CGFloat contentScaleFactor NS_AVAILABLE_IOS(4_0);/** 是否支持多点触摸，默认NO */@property(nonatomic,getter=isMultipleTouchEnabled) BOOL multipleTouchEnabled __TVOS_PROHIBITED;/** 是否独占整个Touch事件，默认NO */@property(nonatomic,getter=isExclusiveTouch) BOOL exclusiveTouch __TVOS_PROHIBITED;/** 在指定点上点击测试指定事件 */- (nullable UIView *)hitTest:(CGPoint)point withEvent:(nullable UIEvent *)event;/** 判断当前的点击或者触摸事件的点是否在当前的view中，默认返回YES */- (BOOL)pointInside:(CGPoint)point withEvent:(nullable UIEvent *)event;/** 将像素point由point所在视图转换到目标视图view中，返回在目标视图view中的像素值 */- (CGPoint)convertPoint:(CGPoint)point toView:(nullable UIView *)view;/** 将像素point由point所在视图转换到目标视图view中，返回在目标视图view中的像素值 */- (CGPoint)convertPoint:(CGPoint)point fromView:(nullable UIView *)view;/** 将rect由rect所在视图转换到目标视图view中，返回在目标视图view中的rect */- (CGRect)convertRect:(CGRect)rect toView:(nullable UIView *)view;/** 将rect从view中转换到当前视图中，返回在当前视图中的rect */- (CGRect)convertRect:(CGRect)rect fromView:(nullable UIView *)view;/** 自动调整子视图尺寸，默认YES则会根据autoresizingMask属性自动调整子视图尺寸 */@property(nonatomic) BOOL autoresizesSubviews;/** 自动调整子视图与父视图的位置，默认UIViewAutoresizingNone */@property(nonatomic) UIViewAutoresizing autoresizingMask;/** 返回“最佳”大小适合给定的大小 */- (CGSize)sizeThatFits:(CGSize)size;/** 调整为刚好合适子视图大小 */- (void)sizeToFit;@end@interface UIView(UIViewHierarchy)/** 获取父视图 */@property(nullable, nonatomic,readonly) UIView *superview;/** 获取所有子视图 */@property(nonatomic,readonly,copy) NSArray<__kindof UIView *> *subviews;/** 获取视图所在的Window */@property(nullable, nonatomic,readonly) UIWindow *window;/** 从父视图中移除控件 */- (void)removeFromSuperview;/** 插入子视图(将子视图插入到subviews数组中index这个位置) */- (void)insertSubview:(UIView *)view atIndex:(NSInteger)index;/** 交换subviews数组中所存放子视图的位置 */- (void)exchangeSubviewAtIndex:(NSInteger)index1 withSubviewAtIndex:(NSInteger)index2;/** 添加子视图(新添加的视图在subviews数组的后面, 显示在最上面) */- (void)addSubview:(UIView *)view;/** 插入子视图(将子视图插到siblingSubview之下) */- (void)insertSubview:(UIView *)view belowSubview:(UIView *)siblingSubview;/** 插入子视图(将子视图插到siblingSubview之上) */- (void)insertSubview:(UIView *)view aboveSubview:(UIView *)siblingSubview;/** 将子视图拉到最上面来显示 */- (void)bringSubviewToFront:(UIView *)view;/** 将子视图拉到最下面来显示 */- (void)sendSubviewToBack:(UIView *)view;##pragma mark - 系统自动调用(留给子类去实现)/** 添加自视图完成后调用 */- (void)didAddSubview:(UIView *)subview;/** 将要移除自视图时调用 */- (void)willRemoveSubview:(UIView *)subview;/** 将要移动到新父视图时调用 */- (void)willMoveToSuperview:(nullable UIView *)newSuperview;/** 移动到新父视图完成后调用 */- (void)didMoveToSuperview;/** 将要移动到新Window时调用 */- (void)willMoveToWindow:(nullable UIWindow *)newWindow;/** 移动到新Window完成后调用 */- (void)didMoveToWindow;/** 判断view是否为子类 */- (BOOL)isDescendantOfView:(UIView *)view;/** 通过tag获得对应的子视图 */- (nullable __kindof UIView *)viewWithTag:(NSInteger)tag;/** 对现在有布局有调整更改后，使用这个方法进行更新 */- (void)setNeedsLayout;/** 强制进行更新layout */- (void)layoutIfNeeded;/** 控件的frame发生改变的时候就会调用,一般在这里重写布局子控件的位置和尺寸 */- (void)layoutSubviews;/** 设置view之间的间距，该属性只对autolayout布局有效 */@property (nonatomic) UIEdgeInsets layoutMargins NS_AVAILABLE_IOS(8_0);/** 是否将当前视图的间距和父视图相同，默认是NO */@property (nonatomic) BOOL preservesSuperviewLayoutMargins NS_AVAILABLE_IOS(8_0);/** 改变view的layoutMargins这个属性时，会触发这个方法 */- (void)layoutMarginsDidChange NS_AVAILABLE_IOS(8_0);/** 视图间距引导 */@property(readonly,strong) UILayoutGuide *layoutMarginsGuide NS_AVAILABLE_IOS(9_0);/** 获取此区域的内的布局引导 */@property (nonatomic, readonly, strong) UILayoutGuide *readableContentGuide NS_AVAILABLE_IOS(9_0);@end@interface UIView(UIViewRendering)/** 重写drawRect方法，在可以这里进行绘图操作。*/- (void)drawRect:(CGRect)rect;/** 标记整个视图的边界矩形需要重绘, 调用这个方法会自动调用drawRect方法 */- (void)setNeedsDisplay;/** 标记在指定区域内的视图的边界需要重绘, 调用这个方法会自动调用drawRect方法 */- (void)setNeedsDisplayInRect:(CGRect)rect;/** 是否裁剪超出Bounds范围的子控件，默认NO */@property(nonatomic) BOOL clipsToBounds;/** 设置背景颜色，默认nil */@property(nullable, nonatomic,copy) UIColor *backgroundColor UI_APPEARANCE_SELECTOR;/** 设置透明度(范围0.0~1.0)，默认1.0 */@property(nonatomic) CGFloat alpha;/** 设置是否不透明，默认YES不透明 */@property(nonatomic,getter=isOpaque) BOOL opaque;/** 视图重绘前是否先清理以前的内容，默认YES */@property(nonatomic) BOOL clearsContextBeforeDrawing;/** 设置是否隐藏，默认NO不隐藏 */@property(nonatomic,getter=isHidden) BOOL hidden;/** 内容显示的模式，默认UIViewContentModeScaleToFill */@property(nonatomic) UIViewContentMode contentMode;/** 拉伸属性，如图片拉伸 */@property(nonatomic) CGRect contentStretch NS_DEPRECATED_IOS(3_0,6_0) __TVOS_PROHIBITED;/** 蒙板view */@property(nullable, nonatomic,strong) UIView *maskView NS_AVAILABLE_IOS(8_0);/** 改变应用程序的外观的颜色。默认为nil */@property(null_resettable, nonatomic, strong) UIColor *tintColor NS_AVAILABLE_IOS(7_0);/** 可以使tintColor变暗，因此整个视图层次变暗 */@property(nonatomic) UIViewTintAdjustmentMode tintAdjustmentMode NS_AVAILABLE_IOS(7_0);/** 覆盖这个方法的目的是为了当tintColor改变的时候自定义一些行为 */- (void)tintColorDidChange NS_AVAILABLE_IOS(7_0);@end@interface UIView(UIViewAnimation)/** 开始动画 */+ (void)beginAnimations:(nullable NSString *)animationID context:(nullable void *)context;/** 提交动画 */+ (void)commitAnimations;/** 设置动画代理, 默认nil */+ (void)setAnimationDelegate:(nullable id)delegate;/** 动画将要开始时执行方法（必须要先设置动画代理）, 默认NULL */+ (void)setAnimationWillStartSelector:(nullable SEL)selector;/** 动画已结束时执行方法（必须要先设置动画代理）, 默认NULL */+ (void)setAnimationDidStopSelector:(nullable SEL)selector;/** 设置动画时长, 默认0.2秒 */+ (void)setAnimationDuration:(NSTimeInterval)duration;/** 动画延迟执行时间, 默认0.0秒 */+ (void)setAnimationDelay:(NSTimeInterval)delay;/** 设置在动画块内部动画属性改变的开始时间, 默认now ([NSDate date]) */+ (void)setAnimationStartDate:(NSDate *)startDate;/** 设置动画曲线, 默认UIViewAnimationCurveEaseInOut */+ (void)setAnimationCurve:(UIViewAnimationCurve)curve;/** 动画的重复播放次数， 默认0 */+ (void)setAnimationRepeatCount:(float)repeatCount;/** 设置是否自定翻转当前的动画效果, 默认NO */+ (void)setAnimationRepeatAutoreverses:(BOOL)repeatAutoreverses;/** 设置动画从当前状态开始播放, 默认NO */+ (void)setAnimationBeginsFromCurrentState:(BOOL)fromCurrentState;/** 在动画块中为视图设置过渡动画 */+ (void)setAnimationTransition:(UIViewAnimationTransition)transition forView:(UIView *)view cache:(BOOL)cache;/** 设置是否激活动画 */+ (void)setAnimationsEnabled:(BOOL)enabled;/** 返回一个布尔值表示动画是否结束 */#if UIKIT_DEFINE_AS_PROPERTIES@property(class, nonatomic, readonly) BOOL areAnimationsEnabled;#else+ (BOOL)areAnimationsEnabled;#endif/** 先检查动画当前是否启用，然后禁止动画，执行block内的方法，最后重新启用动画，而且这个方法不会阻塞基于CoreAnimation的动画 */+ (void)performWithoutAnimation:(void (NS_NOESCAPE ^)(void))actionsWithoutAnimation NS_AVAILABLE_IOS(7_0);/** 当前动画的持续时间 */#if UIKIT_DEFINE_AS_PROPERTIES@property(class, nonatomic, readonly) NSTimeInterval inheritedAnimationDuration NS_AVAILABLE_IOS(9_0);#else+ (NSTimeInterval)inheritedAnimationDuration NS_AVAILABLE_IOS(9_0);#endif@end@interface UIView(UIViewAnimationWithBlocks)/** 用于对一个或多个视图的改变的持续时间、延时、选项动画完成时的操作 */+ (void)animateWithDuration:(NSTimeInterval)duration delay:(NSTimeInterval)delay options:(UIViewAnimationOptions)options animations:(void (^)(void))animations completion:(void (^ __nullable)(BOOL finished))completion NS_AVAILABLE_IOS(4_0);/** 用于对一个或多个视图的改变的持续时间、选项动画完成时的操作，默认：delay = 0.0, options = 0 */+ (void)animateWithDuration:(NSTimeInterval)duration animations:(void (^)(void))animations completion:(void (^ __nullable)(BOOL finished))completion NS_AVAILABLE_IOS(4_0);/** 用于对一个或多个视图的改变的持续时间内动画完成时的操作，默认：delay = 0.0, options = 0, completion = NULL */+ (void)animateWithDuration:(NSTimeInterval)duration animations:(void (^)(void))animations NS_AVAILABLE_IOS(4_0);/** 使用与物理弹簧运动相对应的定时曲线执行视图动画 */+ (void)animateWithDuration:(NSTimeInterval)duration delay:(NSTimeInterval)delay usingSpringWithDamping:(CGFloat)dampingRatio initialSpringVelocity:(CGFloat)velocity options:(UIViewAnimationOptions)options animations:(void (^)(void))animations completion:(void (^ __nullable)(BOOL finished))completion NS_AVAILABLE_IOS(7_0);/** 为指定的容器视图创建转换动画 */+ (void)transitionWithView:(UIView *)view duration:(NSTimeInterval)duration options:(UIViewAnimationOptions)options animations:(void (^ __nullable)(void))animations completion:(void (^ __nullable)(BOOL finished))completion NS_AVAILABLE_IOS(4_0);/** 使用给定的参数在指定视图之间创建转换动画 */+ (void)transitionFromView:(UIView *)fromView toView:(UIView *)toView duration:(NSTimeInterval)duration options:(UIViewAnimationOptions)options completion:(void (^ __nullable)(BOOL finished))completion NS_AVAILABLE_IOS(4_0); // toView added to fromView.superview, fromView removed from its superview/** 在一个或多个视图上执行指定的系统提供的动画，以及定义的可选并行动画 */+ (void)performSystemAnimation:(UISystemAnimation)animation onViews:(NSArray<__kindof UIView *> *)views options:(UIViewAnimationOptions)options animations:(void (^ __nullable)(void))parallelAnimations completion:(void (^ __nullable)(BOOL finished))completion NS_AVAILABLE_IOS(7_0);@end/** UIView的关键帧动画 */@interface UIView (UIViewKeyframeAnimations)/** 创建一个动画块对象，可用于为当前视图设置基于关键帧的动画 */+ (void)animateKeyframesWithDuration:(NSTimeInterval)duration delay:(NSTimeInterval)delay options:(UIViewKeyframeAnimationOptions)options animations:(void (^)(void))animations completion:(void (^ __nullable)(BOOL finished))completion NS_AVAILABLE_IOS(7_0);/** 添加指定开始时间、持续时间的关键帧动画(起始和持续时间是0.0和1.0之间的值) */+ (void)addKeyframeWithRelativeStartTime:(double)frameStartTime relativeDuration:(double)frameDuration animations:(void (^)(void))animations NS_AVAILABLE_IOS(7_0);@end@interface UIView (UIViewGestureRecognizers)/** 当前视图所附加的所有手势识别器 */@property(nullable, nonatomic,copy) NSArray<__kindof UIGestureRecognizer *> *gestureRecognizers NS_AVAILABLE_IOS(3_2);/** 添加一个手势识别器 */- (void)addGestureRecognizer:(UIGestureRecognizer*)gestureRecognizer NS_AVAILABLE_IOS(3_2);/** 移除一个手势识别器 */- (void)removeGestureRecognizer:(UIGestureRecognizer*)gestureRecognizer NS_AVAILABLE_IOS(3_2);/** 开始一个手势识别器 */- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer NS_AVAILABLE_IOS(6_0);@end@interface UIView (UIViewMotionEffects)/** 添加运动效果，当倾斜设备时视图稍微改变其位置 */- (void)addMotionEffect:(UIMotionEffect *)effect NS_AVAILABLE_IOS(7_0);/** 移除运动效果 */- (void)removeMotionEffect:(UIMotionEffect *)effect NS_AVAILABLE_IOS(7_0);/** 所有添加的运动效果 */@property (copy, nonatomic) NSArray<__kindof UIMotionEffect *> *motionEffects NS_AVAILABLE_IOS(7_0);@endtypedef NS_ENUM(NSInteger, UILayoutConstraintAxis) { UILayoutConstraintAxisHorizontal = 0, //!< 水平约束. UILayoutConstraintAxisVertical = 1 //!< 竖直约束.};@interface UIView (UIConstraintBasedLayoutInstallingConstraints)/** 获取所有约束 */@property(nonatomic,readonly) NSArray<__kindof NSLayoutConstraint *> *constraints NS_AVAILABLE_IOS(6_0);/** 添加一个约束 */- (void)addConstraint:(NSLayoutConstraint *)constraint NS_AVAILABLE_IOS(6_0);/** 添加多个约束 */- (void)addConstraints:(NSArray<__kindof NSLayoutConstraint *> *)constraints NS_AVAILABLE_IOS(6_0);/** 移除一个约束 */- (void)removeConstraint:(NSLayoutConstraint *)constraint NS_AVAILABLE_IOS(6_0);/** 移除多个约束 */- (void)removeConstraints:(NSArray<__kindof NSLayoutConstraint *> *)constraints NS_AVAILABLE_IOS(6_0);@end@interface UIView (UIConstraintBasedLayoutCoreMethods)/** 更新视图和其子视图的约束 */- (void)updateConstraintsIfNeeded NS_AVAILABLE_IOS(6_0);/** 为视图更新约束，可以重写这个方法来设置当前view局部的布局约束 */- (void)updateConstraints NS_AVAILABLE_IOS(6_0) NS_REQUIRES_SUPER;/** 视图的约束是否需要更新 */- (BOOL)needsUpdateConstraints NS_AVAILABLE_IOS(6_0);/** 设置视图的约束需要更新，调用这个方法，系统会调用updateConstraints去更新布局 */- (void)setNeedsUpdateConstraints NS_AVAILABLE_IOS(6_0);@end@interface UIView (UIConstraintBasedCompatibility)/** 是否启用自动布局约束，默认YES. IB默认是NO */@property(nonatomic) BOOL translatesAutoresizingMaskIntoConstraints NS_AVAILABLE_IOS(6_0);/** 是否使用约束布局 */#if UIKIT_DEFINE_AS_PROPERTIES@property(class, nonatomic, readonly) BOOL requiresConstraintBasedLayout NS_AVAILABLE_IOS(6_0);#else+ (BOOL)requiresConstraintBasedLayout NS_AVAILABLE_IOS(6_0);#endif@end@interface UIView (UIConstraintBasedLayoutLayering)/** 返回给定框架的视图的对齐矩阵 */- (CGRect)alignmentRectForFrame:(CGRect)frame NS_AVAILABLE_IOS(6_0);/** 返回给定对齐矩形的视图的frame */- (CGRect)frameForAlignmentRect:(CGRect)alignmentRect NS_AVAILABLE_IOS(6_0);/** 返回从视图的frame上定义的对齐矩阵的边框 */#if UIKIT_DEFINE_AS_PROPERTIES@property(nonatomic, readonly) UIEdgeInsets alignmentRectInsets NS_AVAILABLE_IOS(6_0);#else- (UIEdgeInsets)alignmentRectInsets NS_AVAILABLE_IOS(6_0);#endif/** 返回满足基线约束条件的视图 */- (UIView *)viewForBaselineLayout NS_DEPRECATED_IOS(6_0, 9_0, "Override -viewForFirstBaselineLayout or -viewForLastBaselineLayout as appropriate, instead") __TVOS_PROHIBITED;/** 返回用于满足第一基线约束的视图 */@property(readonly,strong) UIView *viewForFirstBaselineLayout NS_AVAILABLE_IOS(9_0);/** 返回用于满足上次基线约束的视图 */@property(readonly,strong) UIView *viewForLastBaselineLayout NS_AVAILABLE_IOS(9_0);UIKIT_EXTERN const CGFloat UIViewNoIntrinsicMetric NS_AVAILABLE_IOS(6_0); // -1/** 返回接收对象的原本大小 */#if UIKIT_DEFINE_AS_PROPERTIES@property(nonatomic, readonly) CGSize intrinsicContentSize NS_AVAILABLE_IOS(6_0);#else- (CGSize)intrinsicContentSize NS_AVAILABLE_IOS(6_0);#endif/** 废除视图原本内容的size */- (void)invalidateIntrinsicContentSize NS_AVAILABLE_IOS(6_0);/** 设置当视图要变大时，视图的压缩改变方式，返回一个优先权（确定view有多大的优先级阻止自己变大） */- (UILayoutPriority)contentHuggingPriorityForAxis:(UILayoutConstraintAxis)axis NS_AVAILABLE_IOS(6_0);/** 设置放先权 */- (void)setContentHuggingPriority:(UILayoutPriority)priority forAxis:(UILayoutConstraintAxis)axis NS_AVAILABLE_IOS(6_0);/** 设置当视图要变小时，视图的压缩改变方式，是水平缩小还是垂直缩小，并返回一个优先权（确定有多大的优先级阻止自己变小） */- (UILayoutPriority)contentCompressionResistancePriorityForAxis:(UILayoutConstraintAxis)axis NS_AVAILABLE_IOS(6_0);/** 设置优先权 */- (void)setContentCompressionResistancePriority:(UILayoutPriority)priority forAxis:(UILayoutConstraintAxis)axis NS_AVAILABLE_IOS(6_0);@end// Size To FitUIKIT_EXTERN const CGSize UILayoutFittingCompressedSize NS_AVAILABLE_IOS(6_0);UIKIT_EXTERN const CGSize UILayoutFittingExpandedSize NS_AVAILABLE_IOS(6_0);@interface UIView (UIConstraintBasedLayoutFittingSize)/** 返回满足持有约束的视图的size */- (CGSize)systemLayoutSizeFittingSize:(CGSize)targetSize NS_AVAILABLE_IOS(6_0);/** 返回满足它所包含的约束的视图的大小 */- (CGSize)systemLayoutSizeFittingSize:(CGSize)targetSize withHorizontalFittingPriority:(UILayoutPriority)horizontalFittingPriority verticalFittingPriority:(UILayoutPriority)verticalFittingPriority NS_AVAILABLE_IOS(8_0);@end@interface UIView (UILayoutGuideSupport)/** 此视图拥有布局向导对象的数组 */@property(nonatomic,readonly,copy) NSArray<__kindof UILayoutGuide *> *layoutGuides NS_AVAILABLE_IOS(9_0);/** 向视图中添加布局向导 */- (void)addLayoutGuide:(UILayoutGuide *)layoutGuide NS_AVAILABLE_IOS(9_0);/** 向视图中添加布局向导 */- (void)removeLayoutGuide:(UILayoutGuide *)layoutGuide NS_AVAILABLE_IOS(9_0);@end@class NSLayoutXAxisAnchor,NSLayoutYAxisAnchor,NSLayoutDimension;@interface UIView (UIViewLayoutConstraintCreation)/** 布局视图的前缘框的布局锚点 */@property(readonly, strong) NSLayoutXAxisAnchor *leadingAnchor NS_AVAILABLE_IOS(9_0);/** 布局视图的后缘边框的布局锚点 */@property(readonly, strong) NSLayoutXAxisAnchor *trailingAnchor NS_AVAILABLE_IOS(9_0);/** 布局视图的左边框的布局锚点 */@property(readonly, strong) NSLayoutXAxisAnchor *leftAnchor NS_AVAILABLE_IOS(9_0);/** 布局视图的右边框的布局锚点 */@property(readonly, strong) NSLayoutXAxisAnchor *rightAnchor NS_AVAILABLE_IOS(9_0);/** 布局视图的顶边框的布局锚点 */@property(readonly, strong) NSLayoutYAxisAnchor *topAnchor NS_AVAILABLE_IOS(9_0);/** 布局视图的底边框的布局锚点 */@property(readonly, strong) NSLayoutYAxisAnchor *bottomAnchor NS_AVAILABLE_IOS(9_0);/** 布局视图的宽度 */@property(readonly, strong) NSLayoutDimension *widthAnchor NS_AVAILABLE_IOS(9_0);/** 布局视图的高度 */@property(readonly, strong) NSLayoutDimension *heightAnchor NS_AVAILABLE_IOS(9_0);/** 布局视图的水平中心轴 */@property(readonly, strong) NSLayoutXAxisAnchor *centerXAnchor NS_AVAILABLE_IOS(9_0);/** 布局视图的垂直中心轴 */@property(readonly, strong) NSLayoutYAxisAnchor *centerYAnchor NS_AVAILABLE_IOS(9_0);/** 一个代表对视图中的文本的最高线基线布置锚 */@property(readonly, strong) NSLayoutYAxisAnchor *firstBaselineAnchor NS_AVAILABLE_IOS(9_0);/** 一个代表对视图中的文本的最低线基线布置锚 */@property(readonly, strong) NSLayoutYAxisAnchor *lastBaselineAnchor NS_AVAILABLE_IOS(9_0);@end@interface UIView (UIConstraintBasedLayoutDebugging)/** 获得实体在不同方向上所有的布局约束 */- (NSArray<__kindof NSLayoutConstraint *> *)constraintsAffectingLayoutForAxis:(UILayoutConstraintAxis)axis NS_AVAILABLE_IOS(6_0);/** 可以知道当前视图的布局是否会有歧义 */#if UIKIT_DEFINE_AS_PROPERTIES@property(nonatomic, readonly) BOOL hasAmbiguousLayout NS_AVAILABLE_IOS(6_0);#else- (BOOL)hasAmbiguousLayout NS_AVAILABLE_IOS(6_0);#endif/** 这个方法会随机改变视图的layout到另外一个有效的layout。这样我们就可以很清楚的看到哪一个layout导致了整体的布局约束出现了错误，或者我们应该增加更多的布局约束 */- (void)exerciseAmbiguityInLayout NS_AVAILABLE_IOS(6_0);@end/** 约束调试，只在DEBUG环境下被调用 */@interface UILayoutGuide (UIConstraintBasedLayoutDebugging)/** 获得实体在不同方向上所有的布局约束 */- (NSArray<__kindof NSLayoutConstraint *> *)constraintsAffectingLayoutForAxis:(UILayoutConstraintAxis)axis NS_AVAILABLE_IOS(10_0);/** 可以知道当前视图的布局是否会有歧义 */#if UIKIT_DEFINE_AS_PROPERTIES@property(nonatomic, readonly) BOOL hasAmbiguousLayout NS_AVAILABLE_IOS(10_0);#else- (BOOL)hasAmbiguousLayout NS_AVAILABLE_IOS(10_0);#endif@end#pragma mark - View状态保存恢复@interface UIView (UIStateRestoration)/** 标示是否支持保存,恢复视图状态信息 */@property (nullable, nonatomic, copy) NSString *restorationIdentifier NS_AVAILABLE_IOS(6_0);/** 保存视图状态相关的信息 */- (void) encodeRestorableStateWithCoder:(NSCoder *)coder NS_AVAILABLE_IOS(6_0);/** 恢复和保持视图状态相关信息 */- (void) decodeRestorableStateWithCoder:(NSCoder *)coder NS_AVAILABLE_IOS(6_0);@end#pragma mark - View快照@interface UIView (UISnapshotting)/** 将当前显示的view截取成一个新的view */- (nullable UIView *)snapshotViewAfterScreenUpdates:(BOOL)afterUpdates NS_AVAILABLE_IOS(7_0);/** 缩放一个view默认是从中心点进行缩放的 */- (nullable UIView *)resizableSnapshotViewFromRect:(CGRect)rect afterScreenUpdates:(BOOL)afterUpdates withCapInsets:(UIEdgeInsets)capInsets NS_AVAILABLE_IOS(7_0);/** 屏幕快照 */- (BOOL)drawViewHierarchyInRect:(CGRect)rect afterScreenUpdates:(BOOL)afterUpdates NS_AVAILABLE_IOS(7_0);@endNS_ASSUME_NONNULL_ENDONNULL
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