AnimatorListeners
added to them.
*/
public abstract class Animator implements Cloneable {
/**
* The set of listeners to be sent events through the life of an animation.
*/
ArrayListcancel()
causes the animation to
* stop in its tracks, sending an {@link android.animation.Animator.AnimatorListener#onAnimationCancel(Animator)} to
* its listeners, followed by an {@link android.animation.Animator.AnimatorListener#onAnimationEnd(Animator)} message.
*/
public void cancel() {
}
/**
* Ends the animation. This causes the animation to assign the end value of the property being
* animated, then calling the {@link android.animation.Animator.AnimatorListener#onAnimationEnd(Animator)} method on
* its listeners.
*/
public void end() {
}
/**
* The amount of time, in milliseconds, to delay starting the animation after
* {@link #start()} is called.
*
* @return the number of milliseconds to delay running the animation
*/
public abstract long getStartDelay();
/**
* The amount of time, in milliseconds, to delay starting the animation after
* {@link #start()} is called.
* @param startDelay The amount of the delay, in milliseconds
*/
public abstract void setStartDelay(long startDelay);
/**
* Sets the length of the animation.
*
* @param duration The length of the animation, in milliseconds.
*/
public abstract void setDuration(long duration);
/**
* Gets the length of the animation.
*
* @return The length of the animation, in milliseconds.
*/
public abstract long getDuration();
/**
* The time interpolator used in calculating the elapsed fraction of this animation. The
* interpolator determines whether the animation runs with linear or non-linear motion,
* such as acceleration and deceleration. The default value is
* {@link android.view.animation.AccelerateDecelerateInterpolator}
*
* @param value the interpolator to be used by this animation
*/
public abstract void setInterpolator(TimeInterpolator value);
/**
* Returns whether this Animator is currently running (having been started and not yet ended).
* @return Whether the Animator is running.
*/
public abstract boolean isRunning();
/**
* Adds a listener to the set of listeners that are sent events through the life of an
* animation, such as start, repeat, and end.
*
* @param listener the listener to be added to the current set of listeners for this animation.
*/
public void addListener(AnimatorListener listener) {
if (mListeners == null) {
mListeners = new ArrayListAnimator
object.
*
* @return ArrayListgetListeners()
followed by calling clear()
on the
* returned list of listeners.
*/
public void removeAllListeners() {
if (mListeners != null) {
mListeners.clear();
mListeners = null;
}
}
@Override
public Animator clone() {
try {
final Animator anim = (Animator) super.clone();
if (mListeners != null) {
ArrayListAn animation listener receives notifications from an animation. * Notifications indicate animation related events, such as the end or the * repetition of the animation.
*/ public static interface AnimatorListener { /** *Notifies the start of the animation.
* * @param animation The started animation. */ void onAnimationStart(Animator animation); /** *Notifies the end of the animation. This callback is not invoked * for animations with repeat count set to INFINITE.
* * @param animation The animation which reached its end. */ void onAnimationEnd(Animator animation); /** *Notifies the cancellation of the animation. This callback is not invoked * for animations with repeat count set to INFINITE.
* * @param animation The animation which was canceled. */ void onAnimationCancel(Animator animation); /** *Notifies the repetition of the animation.
* * @param animation The animation which was repeated. */ void onAnimationRepeat(Animator animation); } }