public class ScaleAnimation
extends Animation
java.lang.Object | ||
↳ | android.view.animation.Animation | |
↳ | android.view.animation.ScaleAnimation |
控制对象比例的动画。 您可以指定要用于缩放中心的点。
Inherited XML attributes |
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From class android.view.animation.Animation
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Inherited constants |
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From class android.view.animation.Animation
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Public constructors |
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ScaleAnimation(Context context, AttributeSet attrs) 从资源加载ScaleAnimation时使用的构造函数。 |
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ScaleAnimation(float fromX, float toX, float fromY, float toY) 从代码构建ScaleAnimation时使用的构造函数 |
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ScaleAnimation(float fromX, float toX, float fromY, float toY, float pivotX, float pivotY) 从代码构建ScaleAnimation时使用的构造函数 |
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ScaleAnimation(float fromX, float toX, float fromY, float toY, int pivotXType, float pivotXValue, int pivotYType, float pivotYValue) 从代码构建ScaleAnimation时使用的构造函数 |
Public methods |
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void |
initialize(int width, int height, int parentWidth, int parentHeight) 使用被动画对象的维度以及对象父项来初始化此动画。 |
Protected methods |
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void |
applyTransformation(float interpolatedTime, Transformation t) 帮助getTransformation。 |
Inherited methods |
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From class android.view.animation.Animation
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From class java.lang.Object
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ScaleAnimation (Context context, AttributeSet attrs)
从资源加载ScaleAnimation时使用的构造函数。
Parameters | |
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context |
Context : Application context to use |
attrs |
AttributeSet : Attribute set from which to read values |
ScaleAnimation (float fromX, float toX, float fromY, float toY)
从代码构建ScaleAnimation时使用的构造函数
Parameters | |
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fromX |
float : Horizontal scaling factor to apply at the start of the animation |
toX |
float : Horizontal scaling factor to apply at the end of the animation |
fromY |
float : Vertical scaling factor to apply at the start of the animation |
toY |
float : Vertical scaling factor to apply at the end of the animation |
ScaleAnimation (float fromX, float toX, float fromY, float toY, float pivotX, float pivotY)
从代码构建ScaleAnimation时使用的构造函数
Parameters | |
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fromX |
float : Horizontal scaling factor to apply at the start of the animation |
toX |
float : Horizontal scaling factor to apply at the end of the animation |
fromY |
float : Vertical scaling factor to apply at the start of the animation |
toY |
float : Vertical scaling factor to apply at the end of the animation |
pivotX |
float : The X coordinate of the point about which the object is being scaled, specified as an absolute number where 0 is the left edge. (This point remains fixed while the object changes size.) |
pivotY |
float : The Y coordinate of the point about which the object is being scaled, specified as an absolute number where 0 is the top edge. (This point remains fixed while the object changes size.) |
ScaleAnimation (float fromX, float toX, float fromY, float toY, int pivotXType, float pivotXValue, int pivotYType, float pivotYValue)
从代码构建ScaleAnimation时使用的构造函数
Parameters | |
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fromX |
float : Horizontal scaling factor to apply at the start of the animation |
toX |
float : Horizontal scaling factor to apply at the end of the animation |
fromY |
float : Vertical scaling factor to apply at the start of the animation |
toY |
float : Vertical scaling factor to apply at the end of the animation |
pivotXType |
int : Specifies how pivotXValue should be interpreted. One of Animation.ABSOLUTE, Animation.RELATIVE_TO_SELF, or Animation.RELATIVE_TO_PARENT. |
pivotXValue |
float : The X coordinate of the point about which the object is being scaled, specified as an absolute number where 0 is the left edge. (This point remains fixed while the object changes size.) This value can either be an absolute number if pivotXType is ABSOLUTE, or a percentage (where 1.0 is 100%) otherwise. |
pivotYType |
int : Specifies how pivotYValue should be interpreted. One of Animation.ABSOLUTE, Animation.RELATIVE_TO_SELF, or Animation.RELATIVE_TO_PARENT. |
pivotYValue |
float : The Y coordinate of the point about which the object is being scaled, specified as an absolute number where 0 is the top edge. (This point remains fixed while the object changes size.) This value can either be an absolute number if pivotYType is ABSOLUTE, or a percentage (where 1.0 is 100%) otherwise. |
void initialize (int width, int height, int parentWidth, int parentHeight)
使用被动画对象的维度以及对象父项来初始化此动画。 (这是为了支持相对于这些尺寸指定的动画尺寸。)
解析动画的对象在调用对象的大小及其父对象时,应在调用 getTransformation(long, Transformation)
之前调用 getTransformation(long, Transformation)
。
Parameters | |
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width |
int : Width of the object being animated |
height |
int : Height of the object being animated |
parentWidth |
int : Width of the animated object's parent |
parentHeight |
int : Height of the animated object's parent |
void applyTransformation (float interpolatedTime, Transformation t)
帮助getTransformation。 子类应该实现这个以应用赋予插值的变换。 此方法的实现应始终替换指定的转换或其他文档。
Parameters | |
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interpolatedTime |
float : The value of the normalized time (0.0 to 1.0) after it has been run through the interpolation function. |
t |
Transformation : The Transformation object to fill in with the current transforms. |