Keyframe

java.lang.Object
- ohos.agp.animation.util.Keyframe

所有已实现的接口:

Cloneable
```
public abstract class Keyframe
extends Object
implements Cloneable
```
This class can be used to hold a time/value pair for an animation. The Keyframe class is used by AnimatorValue to define the values that the animation target will have over the course of the animation. As the time proceeds from one keyframe to the other, the value of the target object will animate between the value at the previous keyframe and the value at the next keyframe.

从以下版本开始:

7

构造器概要

构造器
构造器说明

Keyframe()

构造器
构造器	说明
`Keyframe()`

方法概要

所有方法静态方法实例方法抽象方法具体方法
限定符和类型	方法	说明
`abstract Keyframe`	`clone()`	Creates and returns a copy of this object.
`float`	`getProgress()`	Gets the time for this keyframe, as a progress of the overall animation duration.
`Class`	`getType()`	Gets the type of the value of the keyframe.
`abstract Object`	`getValue()`	Gets the value for this Keyframe.
`boolean`	`hasValue()`	Indicates whether this keyframe has a valid value.
`static Keyframe`	`ofFloat(float progress)`	Constructs a Keyframe object with the given time.
`static Keyframe`	`ofFloat(float progress, float value)`	Constructs a Keyframe object with the given time and value.
`static Keyframe`	`ofInt(float progress)`	Constructs a Keyframe object with the given time.
`static Keyframe`	`ofInt(float progress, int value)`	Constructs a Keyframe object with the given time and value.
`static Keyframe`	`ofObject(float progress)`	Constructs a Keyframe object with the given time.
`static Keyframe`	`ofObject(float progress, Object value)`	Constructs a Keyframe object with the given time and value.
`void`	`setProgress(float progress)`	Sets the time for this keyframe, as a progress of the overall animation duration.
`abstract void`	`setValue(Object value)`	Sets the value for this Keyframe.

从类继承的方法 java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 构造器详细资料
  - Keyframe
```
public Keyframe()
```
- 方法详细资料
  - ofInt
```
public static Keyframe ofInt(float progress,
                             int value)
```
    Constructs a Keyframe object with the given time and value. The time defines the time, as a proportion of an overall animation's duration, at which the value will hold true for the animation. The value for the animation between keyframes will be calculated as an interpolation between the values at those keyframes.
    
    参数:
    
    progress - The time, expressed as a value between 0 and 1, representing the progress of time elapsed of the overall animation duration.
    
    value - The value that the object will animate to as the animation time approaches the time in this keyframe, and the the value animated from as the time passes the time in this keyframe.
    
    返回:
    
    Returns Keyframe Instances.
    
    从以下版本开始:
    
    7
  - ofInt
```
public static Keyframe ofInt(float progress)
```
    Constructs a Keyframe object with the given time. The value at this time will be derived from the target object when the animation first starts (note that this implies that keyframes with no initial value must be used as part of an AnimatorProperty). The time defines the time, as a proportion of an overall animation's duration, at which the value will hold true for the animation. The value for the animation between keyframes will be calculated as an interpolation between the values at those keyframes.
    
    参数:
    
    progress - The time, expressed as a value between 0 and 1, representing the progress of time elapsed of the overall animation duration.
    
    返回:
    
    Returns Keyframe Instances .
    
    从以下版本开始:
    
    7
  - ofFloat
```
public static Keyframe ofFloat(float progress,
                               float value)
```
    Constructs a Keyframe object with the given time and value. The time defines the time, as a proportion of an overall animation's duration, at which the value will hold true for the animation. The value for the animation between keyframes will be calculated as an interpolation between the values at those keyframes.
    
    参数:
    
    progress - The time, expressed as a value between 0 and 1, representing the progress of time elapsed of the overall animation duration.
    
    value - The value the keyframe should reach when this progress is reached
    
    返回:
    
    Returns Keyframe Instances of type int.
    
    从以下版本开始:
    
    7
  - ofFloat
```
public static Keyframe ofFloat(float progress)
```
    Constructs a Keyframe object with the given time. The value at this time will be derived from the target object when the animation first starts (note that this implies that keyframes with no initial value must be used as part of an AnimatorProperty). The time defines the time, as a proportion of an overall animation's duration, at which the value will hold true for the animation. The value for the animation between keyframes will be calculated as an interpolation between the values at those keyframes.
    
    参数:
    
    progress - The time, expressed as a value between 0 and 1, representing the progress of time elapsed of the overall animation duration.
    
    返回:
    
    Returns Keyframe Instances of type float.
    
    从以下版本开始:
    
    7
  - ofObject
```
public static Keyframe ofObject(float progress,
                                Object value)
```
    Constructs a Keyframe object with the given time and value. The time defines the time, as a proportion of an overall animation's duration, at which the value will hold true for the animation. The value for the animation between keyframes will be calculated as an interpolation between the values at those keyframes.
    
    参数:
    
    progress - The time, expressed as a value between 0 and 1, representing the progress of time elapsed of the overall animation duration.
    
    value - The value that the object will animate to as the animation time approaches the time in this keyframe, and the the value animated from as the time passes the time in this keyframe.
    
    返回:
    
    Returns Keyframe Instances of type Object.
    
    从以下版本开始:
    
    7
  - ofObject
```
public static Keyframe ofObject(float progress)
```
    Constructs a Keyframe object with the given time. The value at this time will be derived from the target object when the animation first starts (note that this implies that keyframes with no initial value must be used as part of an AnimatorProperty). The time defines the time, as a proportion of an overall animation's duration, at which the value will hold true for the animation. The value for the animation between keyframes will be calculated as an interpolation between the values at those keyframes.
    
    参数:
    
    progress - The time, expressed as a value between 0 and 1.
    
    返回:
    
    Returns Keyframe Instances .
    
    从以下版本开始:
    
    7
  - hasValue
```
public boolean hasValue()
```
    Indicates whether this keyframe has a valid value. This method is called internally when an AnimatorProperty first starts; keyframes without values are assigned values at that time by deriving the value for the property from the target object.
    
    返回:
    
    boolean Whether this object has a value assigned.
    
    从以下版本开始:
    
    7
  - getValue
```
public abstract Object getValue()
```
    Gets the value for this Keyframe.
    
    返回:
    
    The value for this Keyframe.
    
    从以下版本开始:
    
    7
  - setValue
```
public abstract void setValue(Object value)
```
    Sets the value for this Keyframe.
    
    参数:
    
    value - value for this Keyframe.
    
    从以下版本开始:
    
    7
  - getProgress
```
public float getProgress()
```
    Gets the time for this keyframe, as a progress of the overall animation duration.
    
    返回:
    
    The time associated with this keyframe, as a progress of the overall animation duration. This should be a value between 0 and 1.
    
    从以下版本开始:
    
    7
  - setProgress
```
public void setProgress(float progress)
```
    Sets the time for this keyframe, as a progress of the overall animation duration.
    
    参数:
    
    progress - time associated with this keyframe, as a progress of the overall animation duration. This should be a value between 0 and 1.
    
    从以下版本开始:
    
    7
  - getType
```
public Class getType()
```
    Gets the type of the value of the keyframe.
    
    返回:
    
    The type of the value stored in the Keyframe.
    
    从以下版本开始:
    
    7
  - clone
```
public abstract Keyframe 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

类 Keyframe

构造器概要

方法概要

从类继承的方法 java.lang.Object

构造器详细资料

Keyframe

方法详细资料

ofInt

ofInt

ofFloat

ofFloat

ofObject

ofObject

hasValue

getValue

setValue

getProgress

setProgress

getType

clone