程序包 ohos.agp.animation.util

类 KeyframeGroup

java.lang.Object

ohos.agp.animation.util.KeyframeGroup

所有已实现的接口:

Cloneable

public class KeyframeGroup
extends Object
implements Cloneable

This class can be used to hold a collection of Keyframe objects and is called by ValueAnimator to calculate values between those keyframes for a given animation. The class internal to the animation package because it is an implementation detail of how Keyframes are stored and used.

从以下版本开始:

7

构造器概要

构造器

构造器	说明
KeyframeGroup(Keyframe... keyframes)

方法概要

限定符和类型	方法	说明
KeyframeGroup	clone()	Creates and returns a copy of this object.
List<Keyframe>	getKeyframes()	Gets the localKeyframes.
Class	getType()	Obtains the type of the value of the keyframe.
Object	getValue(float progress)	Use the input progress value to calculate the actual progress value through the interpolator.
static KeyframeGroup	ofFloat(float... values)	Creates a set of keyframes of type float
static KeyframeGroup	ofInt(int... values)	Creates a set of keyframes of type int
static KeyframeGroup	ofKeyframes(Keyframe... keyframes)	Creates a set of keyframes of keyframe
static KeyframeGroup	ofObject(Object... values)	Creates a set of keyframes of type Object
void	setEstimator(TypeEstimator estimator)	Sets the TypeEstimator to be used when calculating animated values.
String	toString()	Returns a string representation of the object.

从类继承的方法 java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

构造器详细资料

KeyframeGroup

public KeyframeGroup(Keyframe... keyframes)

方法详细资料

getKeyframes

public List<Keyframe> getKeyframes()

Gets the localKeyframes.

返回:

Use localKeyframes as the return value.

从以下版本开始:

7

ofInt

public static KeyframeGroup ofInt(int... values)

Creates a set of keyframes of type int

参数:

values - One or a group of numbers of the int type.

返回:

Returns KeyframeGroup Instances .

从以下版本开始:

7

ofFloat

public static KeyframeGroup ofFloat(float... values)

Creates a set of keyframes of type float

参数:

values - One or a group of numbers of the float type.

返回:

Returns KeyframeGroup Instances .

从以下版本开始:

7

ofObject

public static KeyframeGroup ofObject(Object... values)

Creates a set of keyframes of type Object

参数:

values - One or a group of numbers of the Object values.

返回:

Returns KeyframeGroup Instances .

从以下版本开始:

7

ofKeyframes

public static KeyframeGroup ofKeyframes(Keyframe... keyframes)

Creates a set of keyframes of keyframe

参数:

keyframes - One or a group of numbers of Keyframe.

返回:

Returns KeyframeGroup Instances .

从以下版本开始:

7

setEstimator

public void setEstimator(TypeEstimator estimator)

Sets the TypeEstimator to be used when calculating animated values. For IntKeyframeGroup or FloatKeyframeGroup,it is recommended to use their own estimators to calculate the corresponding values.

参数:

estimator - The TypeEstimator to be used to calculate animated values.

从以下版本开始:

7

getType

public Class getType()

Obtains the type of the value of the keyframe.

返回:

The value type contained by the contained Keyframes.

从以下版本开始:

7

clone

public KeyframeGroup clone()

从类复制的说明: Object

Creates and returns a copy of this object. The precise meaning of "copy" may depend on the class of the object. The general intent is that, for any object x, the expression:

 x.clone() != x

will be true, and that the expression:

 x.clone().getClass() == x.getClass()

will be true, but these are not absolute requirements. While it is typically the case that:

 x.clone().equals(x)

will be true, this is not an absolute requirement.

By convention, the returned object should be obtained by calling super.clone. If a class and all of its superclasses (except Object) obey this convention, it will be the case that x.clone().getClass() == x.getClass().

By convention, the object returned by this method should be independent of this object (which is being cloned). To achieve this independence, it may be necessary to modify one or more fields of the object returned by super.clone before returning it. Typically, this means copying any mutable objects that comprise the internal "deep structure" of the object being cloned and replacing the references to these objects with references to the copies. If a class contains only primitive fields or references to immutable objects, then it is usually the case that no fields in the object returned by super.clone need to be modified.

The method clone for class Object performs a specific cloning operation. First, if the class of this object does not implement the interface Cloneable, then a CloneNotSupportedException is thrown. Note that all arrays are considered to implement the interface Cloneable and that the return type of the clone method of an array type T[] is T[] where T is any reference or primitive type. Otherwise, this method creates a new instance of the class of this object and initializes all its fields with exactly the contents of the corresponding fields of this object, as if by assignment; the contents of the fields are not themselves cloned. Thus, this method performs a "shallow copy" of this object, not a "deep copy" operation.

The class Object does not itself implement the interface Cloneable, so calling the clone method on an object whose class is Object will result in throwing an exception at run time.

覆盖:

clone 在类中 Object

返回:

a clone of this instance.

另请参阅:

Cloneable

getValue

public Object getValue(float progress)

Use the input progress value to calculate the actual progress value through the interpolator. If the estimator exists, use the estimator to calculate the progress value.

参数:

progress - The elapsed progress of the animation

返回:

The animated value.

从以下版本开始:

7

toString

public String toString()

从类复制的说明: Object

Returns a string representation of the object. In general, the toString method returns a string that "textually represents" this object. The result should be a concise but informative representation that is easy for a person to read. It is recommended that all subclasses override this method.

The toString method for class Object returns a string consisting of the name of the class of which the object is an instance, the at-sign character `@', and the unsigned hexadecimal representation of the hash code of the object. In other words, this method returns a string equal to the value of:

 getClass().getName() + '@' + Integer.toHexString(hashCode())
 

覆盖:

toString 在类中 Object

返回:

a string representation of the object.