IOS: Introduction to specific classes and protocols for core animations

Last Update:2015-10-15 Source: Internet

Author: User

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Core Animation classes :caanimation,capropertyanimation, cabasicanimation, cakeyframeanimation, catransition, Caanimationgroup parent class: caanimation (abstract Class)caanimation Direct sub-class: capropertyanimation (abstract class), catransition (transition animation), caanimationgroup (animation array)capropertyanimation Direct sub-class: cabasicanimation (basic animation), cakeyframeanimation (keyframe Animation)========================================================= class Description:@interface caanimation:nsobject <nscoding, nscopying, camediatiming, caaction> //animation Root abstract classSpeed control function (determines the rate at which the animation Runs)@property (strong) camediatimingfunction *timingfunction;Proxy for animations@property (strong) ID delegate;The default is yes, which is removed from the layer after the animation has finished executing, and the shape reverts to the state before the animation is Executed.@property (getter=isremovedoncompletion) BOOL removedoncompletion;class method to create an animated instance+ (instancetype) animation;Gets the corresponding property value according to the specified key+ (id) defaultvalueforkey: (nsstring *) key;Gets the corresponding property according to the specified key is archived-(BOOL) shouldarchivevalueforkey: (nsstring *) key;@end=========================================================@interface nsobject (caanimationdelegate) an animation protocol classification for The//nsobject classThe method that fires when the animation starts-(void) animationdidstart: (caanimation *) anim;The method that fires when the animation is ended-(void) animationdidstop: (caanimation *) anim finished: (BOOL) flag;@end=========================================================@interface capropertyanimation:caanimation //abstract class, Creating an object must use its subclassCreates an animated instance from a specified key path+ (instancetype) animationwithkeypath: (nsstring *) path;The key path of the property@property (copy) NSString *keypath;Whether to add@property (getter=isadditive) BOOL additive;is cumulative@property (getter=iscumulative) BOOL cumulative;Animation deformation function (transform coefficient of Deformation)@property (strong) cavaluefunction *valuefunction;@end=========================================================Note: There is one protocol to note in the core animation: camediatiming //animation ProtocolHere are some of the properties (methods) that correspond to the protocolAnimation start time, used to set animation delay execution time@property Cftimeinterval beginTime;Animation duration @property Cftimeinterval duration;Animation execution Rate @property float speed;Time execution offset @property Cftimeinterval timeoffset;Number of animation repetitions @property float repeatcount;Animation repetition Time @property Cftimeinterval repeatduration;If set to yes, the effect of each repetition of the animation will follow the last@property BOOL autoreverses;//animation Fill Mode (to Fillmode valid, You need to set removedoncompletion = NO) @property (copy) NSString *fillmode;=========================================================@interface cabasicanimation:capropertyanimation //basic AnimationAnimate a property start value, final value, elapsed value (value may be the position of the animation position, deformation properties transform, etc.)@property (strong) ID fromvalue, tovalue, byvalue;@end=========================================================@interface cakeyframeanimation:capropertyanimation //keyframe AnimationAn array that holds animation frames@property (copy) Nsarray *values;Animated motion Path@property Cgpathref path;//store An array of critical moments , specifying a corresponding point in time for the corresponding keyframe with a value range of 0 to 1.0@property (copy) Nsarray *keytimes;Speed control function (determines the rate at which the animation Runs)@property (copy) Nsarray *timingfunctions;Calculation mode, for the connection mode between each frame@property (copy) NSString *calculationmode;Some values (position, transform, and so on) that hold the animation performed at the keyframe time@property (copy) nsarray *tensionvalues, *continuityvalues, *biasvalues;Rotation mode@property (copy) NSString *rotationmode;@end=========================================================@interface catransition:caanimation //transitions AnimationAnimation transition Type@property (copy) NSString *type;Animation transition Direction@property (copy) NSString *subtype;Animation start and end of animation (% of overall Animation)@property float startprogress, endprogress;Animation filtering@property (strong) ID filter;@end=========================================================@interface caanimationgroup:caanimation //animation Array (holds Many animations that can be executed simultaneously)Array for storing multiple animations@property (copy) Nsarray *animations;@endIOS: Introduction to specific classes and protocols for core animations

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