TranslateAnimation
public class TranslateAnimation
extends Animation
java.lang.Object | ||
↳ | android.view.animation.Animation | |
↳ | android.view.animation.TranslateAnimation |
An animation that controls the position of an object. See the full package
description for details and sample code.
Summary
Inherited XML attributes | |
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Inherited constants |
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Public constructors | |
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TranslateAnimation(Context context, AttributeSet attrs) Constructor used when a TranslateAnimation is loaded from a resource. | |
TranslateAnimation(float fromXDelta, float toXDelta, float fromYDelta, float toYDelta) Constructor to use when building a TranslateAnimation from code | |
TranslateAnimation(int fromXType, float fromXValue, int toXType, float toXValue, int fromYType, float fromYValue, int toYType, float toYValue) Constructor to use when building a TranslateAnimation from code |
Public methods | |
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void | initialize(int width, int height, int parentWidth, int parentHeight) Initialize this animation with the dimensions of the object being animated as well as the objects parents. |
Protected methods | |
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void | applyTransformation(float interpolatedTime, Transformation t) Helper for getTransformation. |
Inherited methods | |
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Public constructors
TranslateAnimation
public TranslateAnimation (Context context, AttributeSet attrs)
Constructor used when a TranslateAnimation is loaded from a resource.
Parameters | |
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context | Context : Application context to use |
attrs | AttributeSet : Attribute set from which to read values |
TranslateAnimation
public TranslateAnimation (float fromXDelta, float toXDelta, float fromYDelta, float toYDelta)
Constructor to use when building a TranslateAnimation from code
Parameters | |
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fromXDelta | float : Change in X coordinate to apply at the start of the animation |
toXDelta | float : Change in X coordinate to apply at the end of the animation |
fromYDelta | float : Change in Y coordinate to apply at the start of the animation |
toYDelta | float : Change in Y coordinate to apply at the end of the animation |
TranslateAnimation
public TranslateAnimation (int fromXType, float fromXValue, int toXType, float toXValue, int fromYType, float fromYValue, int toYType, float toYValue)
Constructor to use when building a TranslateAnimation from code
Parameters | |
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fromXType | int : Specifies how fromXValue should be interpreted. One of Animation.ABSOLUTE, Animation.RELATIVE_TO_SELF, or Animation.RELATIVE_TO_PARENT. |
fromXValue | float : Change in X coordinate to apply at the start of the animation. This value can either be an absolute number if fromXType is ABSOLUTE, or a percentage (where 1.0 is 100%) otherwise. |
toXType | int : Specifies how toXValue should be interpreted. One of Animation.ABSOLUTE, Animation.RELATIVE_TO_SELF, or Animation.RELATIVE_TO_PARENT. |
toXValue | float : Change in X coordinate to apply at the end of the animation. This value can either be an absolute number if toXType is ABSOLUTE, or a percentage (where 1.0 is 100%) otherwise. |
fromYType | int : Specifies how fromYValue should be interpreted. One of Animation.ABSOLUTE, Animation.RELATIVE_TO_SELF, or Animation.RELATIVE_TO_PARENT. |
fromYValue | float : Change in Y coordinate to apply at the start of the animation. This value can either be an absolute number if fromYType is ABSOLUTE, or a percentage (where 1.0 is 100%) otherwise. |
toYType | int : Specifies how toYValue should be interpreted. One of Animation.ABSOLUTE, Animation.RELATIVE_TO_SELF, or Animation.RELATIVE_TO_PARENT. |
toYValue | float : Change in Y coordinate to apply at the end of the animation. This value can either be an absolute number if toYType is ABSOLUTE, or a percentage (where 1.0 is 100%) otherwise. |
Public methods
initialize
public void initialize (int width, int height, int parentWidth, int parentHeight)
Initialize this animation with the dimensions of the object being animated as well as the objects parents. (This is to support animation sizes being specified relative to these dimensions.)
Objects that interpret Animations should call this method when the sizes of the object being animated and its parent are known, and before calling 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 |
Protected methods
applyTransformation
protected void applyTransformation (float interpolatedTime, Transformation t)
Helper for getTransformation. Subclasses should implement this to apply their transforms given an interpolation value. Implementations of this method should always replace the specified Transformation or document they are doing otherwise.
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. |