iOS实现浮动泡泡功能

// // UIView+Utils.h // Borrowed from Three20 / DTFoundation // // (c) 2013 iOS. No rights reserved. // #import <UIKit/UIKit.h> @interface UIView (Utils) /** * Shortcut for frame.origin.x. * * Sets frame.origin.x = left */ @property (nonatomic) CGFloat left; /** * Shortcut for frame.origin.y * * Sets frame.origin.y = top */ @property (nonatomic) CGFloat top; /** * Shortcut for frame.origin.x + frame.size.width * * Sets frame.origin.x = right - frame.size.width */ @property (nonatomic) CGFloat right; /** * Shortcut for frame.origin.y + frame.size.height * * Sets frame.origin.y = bottom - frame.size.height */ @property (nonatomic) CGFloat bottom; /** * Shortcut for frame.size.width * * Sets frame.size.width = width */ @property (nonatomic) CGFloat width; /** * Shortcut for frame.size.height * * Sets frame.size.height = height */ @property (nonatomic) CGFloat height; /** * Shortcut for center.x * * Sets center.x = centerX */ @property (nonatomic) CGFloat centerX; /** * Shortcut for center.y * * Sets center.y = centerY */ @property (nonatomic) CGFloat centerY; /** * Return the x coordinate on the screen. */ @property (nonatomic, readonly) CGFloat screenX; /** * Return the y coordinate on the screen. */ @property (nonatomic, readonly) CGFloat screenY; /** * Return the x coordinate on the screen, taking into account scroll views. */ @property (nonatomic, readonly) CGFloat screenViewX; /** * Return the y coordinate on the screen, taking into account scroll views. */ @property (nonatomic, readonly) CGFloat screenViewY; /** * Return the view frame on the screen, taking into account scroll views. */ @property (nonatomic, readonly) CGRect screenFrame; /** * Shortcut for frame.origin */ @property (nonatomic) CGPoint origin; /** * Shortcut for frame.size */ @property (nonatomic) CGSize size; /** * Return the width in portrait or the height in landscape. */ @property (nonatomic, readonly) CGFloat orientationWidth; /** * Return the height in portrait or the width in landscape. */ @property (nonatomic, readonly) CGFloat orientationHeight; /** 20160808 */ @property (nonatomic,assign) CGFloat x; @property (nonatomic,assign) CGFloat y; /** * Finds the first descendant view (including this view) that is a member of a particular class. */ - (UIView*)descendantOrSelfWithClass:(Class)cls; /** * Finds the first ancestor view (including this view) that is a member of a particular class. */ - (UIView*)ancestorOrSelfWithClass:(Class)cls; /** * Removes all subviews. */ - (void)removeAllSubviews; /** Attaches the given block for a single tap action to the receiver. @param block The block to execute. */ - (void)setTapActionWithBlock:(void (^)(void))block; /** Attaches the given block for a long press action to the receiver. @param block The block to execute. */ - (void)setLongPressActionWithBlock:(void (^)(void))block; //添加边框和圆角，直接设置border和圆角会漏出图片边缘 - (void)giveBorderWithCornerRadious:(CGFloat)radius borderColor:(UIColor *)borderColor andBorderWidth:(CGFloat)borderWidth; //自定义添加圆角 - (void)addCorners:(UIRectCorner)corner; @end