AnimatorListenerAdapter extension to bypass android 4.0.x bug where each method was called twice

OneShotCancelableAnimatorListenerAdapter

import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.annotation.TargetApi;

/**
 * Created by Gustavo Claramunt (AnderWeb) on 2014/07/10
 *
 *
 *
 * This class extends android.animation.AnimatorListenerAdapter to bypass 2 issues:
 * Issue 1: on Android 4.0.x onAnimationStart/onAnimationEnd are called twice.
 *
 * Issue 2: when you cancel() an animation, there's no way for your listener to know
 * if the animation has been canceled before executing your code.
 *
 * This class is meant to be used by implementing 3 (optional) methods:
 * -onAnimationStartOk()
 * -onAnimationEndOk()
 * -onAnimationEndCanceled()
 *
 **/
@TargetApi(11)
public class OneShotCancelableAnimatorListenerAdapter extends AnimatorListenerAdapter {
    private boolean doneStart = false;
    private boolean doneEnd = false;
    private boolean canceled = false;

    @Override
    public final void onAnimationStart(Animator animation) {
        super.onAnimationStart(animation);
        if (!doneStart) {
            doneStart = true;
            onAnimationStartOk(animation);
        }
    }

    @Override
    public final void onAnimationCancel(Animator animation) {
        super.onAnimationCancel(animation);
        canceled = true;
    }

    @Override
    public final void onAnimationEnd(Animator animation) {
        super.onAnimationEnd(animation);
        if (!doneEnd) {
            doneEnd = true;
            if (canceled) {
                onAnimationEndCanceled(animation);
            } else {
                onAnimationEndOk(animation);
            }
        }
    }

    /**
     * This method will be called ONLY ONCE when your animation starts
     * @param animation
     */
    public void onAnimationStartOk(Animator animation) {

    }

    /**
     * This method will be called ONLY ONCE when your animation ends and ONLY if it wasn't previously canceled
     * @param animation
     */
    public void onAnimationEndOk(Animator animation) {

    }

    /**
     * This method will be called ONLY ONCE when your animation ends and ONLY because it was canceled
     * @param animation
     */
    public void onAnimationEndCanceled(Animator animation) {

    }

}