public
class
RotateAnimation
extends Animation
java.lang.Object | ||
↳ | android.view.animation.Animation | |
↳ | android.view.animation.RotateAnimation |
An animation that controls the rotation of an object. This rotation takes place in the X-Y plane. You can specify the point to use for the center of the rotation, where (0,0) is the top left point. If not specified, (0,0) is the default rotation point.
Inherited XML attributes | |
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From
class
android.view.animation.Animation
|
Inherited constants |
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From
class
android.view.animation.Animation
|
Public constructors | |
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RotateAnimation(Context context, AttributeSet attrs)
Constructor used when a RotateAnimation is loaded from a resource. |
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RotateAnimation(float fromDegrees, float toDegrees)
Constructor to use when building a RotateAnimation from code. |
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RotateAnimation(float fromDegrees, float toDegrees, float pivotX, float pivotY)
Constructor to use when building a RotateAnimation from code |
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RotateAnimation(float fromDegrees, float toDegrees, int pivotXType, float pivotXValue, int pivotYType, float pivotYValue)
Constructor to use when building a RotateAnimation from code |
Public methods | |
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void
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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
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applyTransformation(float interpolatedTime, Transformation t)
Helper for getTransformation. |
Inherited methods | |
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From
class
android.view.animation.Animation
| |
From
class
java.lang.Object
|
RotateAnimation (Context context, AttributeSet attrs)
Constructor used when a RotateAnimation 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
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RotateAnimation (float fromDegrees, float toDegrees)
Constructor to use when building a RotateAnimation from code. Default pivotX/pivotY point is (0,0).
Parameters | |
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fromDegrees |
float :
Rotation offset to apply at the start of the
animation. |
toDegrees |
float :
Rotation offset to apply at the end of the animation.
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RotateAnimation (float fromDegrees, float toDegrees, float pivotX, float pivotY)
Constructor to use when building a RotateAnimation from code
Parameters | |
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fromDegrees |
float :
Rotation offset to apply at the start of the
animation. |
toDegrees |
float :
Rotation offset to apply at the end of the animation. |
pivotX |
float :
The X coordinate of the point about which the object is
being rotated, specified as an absolute number where 0 is the left
edge. |
pivotY |
float :
The Y coordinate of the point about which the object is
being rotated, specified as an absolute number where 0 is the top
edge.
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RotateAnimation (float fromDegrees, float toDegrees, int pivotXType, float pivotXValue, int pivotYType, float pivotYValue)
Constructor to use when building a RotateAnimation from code
Parameters | |
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fromDegrees |
float :
Rotation offset to apply at the start of the
animation. |
toDegrees |
float :
Rotation offset 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 rotated, specified as an absolute number where 0 is the
left edge. 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 rotated, specified as an absolute number where 0 is the
top edge. This value can either be an absolute number if
pivotYType is ABSOLUTE, or a percentage (where 1.0 is 100%)
otherwise.
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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. (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
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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.
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