import io.codetail.animation.RevealAnimator.RevealInfo; //导入依赖的package包/类
/**
 * Returns an Animator which can animate a clipping circle.
 * <p/>
 * Any shadow cast by the View will respect the circular clip from this animator.
 * <p/>
 * Only a single non-rectangular clip can be applied on a View at any time.
 * Views clipped by a circular reveal animation take priority over
 * {@link View#setClipToOutline(boolean) View Outline clipping}.
 * <p/>
 * Note that the animation returned here is a one-shot animation. It cannot
 * be re-used, and once started it cannot be paused or resumed.
 *
 * @param view        The View will be clipped to the animating circle.
 * @param centerX     The x coordinate of the center of the animating circle.
 * @param centerY     The y coordinate of the center of the animating circle.
 * @param startRadius The starting radius of the animating circle.
 * @param endRadius   The ending radius of the animating circle.
 */
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
public static SupportAnimator createCircularReveal(View view,
                                                   int centerX, int centerY,
                                                   float startRadius, float endRadius) {

    if (!(view.getParent() instanceof RevealAnimator)) {
        throw new IllegalArgumentException("View must be inside RevealFrameLayout or RevealLinearLayout.");
    }

    RevealAnimator revealLayout = (RevealAnimator) view.getParent();
    revealLayout.attachRevealInfo(new RevealInfo(centerX, centerY, startRadius, endRadius,
            new WeakReference<>(view)));

    if (LOLLIPOP_PLUS) {
        return new SupportAnimatorLollipop(android.view.ViewAnimationUtils
                .createCircularReveal(view, centerX, centerY, startRadius, endRadius), revealLayout);
    }

    ObjectAnimator reveal = ObjectAnimator.ofFloat(revealLayout, CLIP_RADIUS,
            startRadius, endRadius);
    reveal.addListener(getRevealFinishListener(revealLayout));

    return new SupportAnimatorPreL(reveal, revealLayout);
}
 

import io.codetail.animation.RevealAnimator.RevealInfo; //导入依赖的package包/类
/**
 * Returns an Animator which can animate a clipping circle.
 * <p>
 * Any shadow cast by the View will respect the circular clip from this animator.
 * <p>
 * Only a single non-rectangular clip can be applied on a View at any time.
 * Views clipped by a circular reveal animation take priority over
 * {@link android.view.View#setClipToOutline(boolean) View Outline clipping}.
 * <p>
 * Note that the animation returned here is a one-shot animation. It cannot
 * be re-used, and once started it cannot be paused or resumed.
 *
 * @param view The View will be clipped to the animating circle.
 * @param centerX The x coordinate of the center of the animating circle.
 * @param centerY The y coordinate of the center of the animating circle.
 * @param startRadius The starting radius of the animating circle.
 * @param endRadius The ending radius of the animating circle.
 */
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
public static SupportAnimator createCircularReveal(View view,
                                            int centerX,  int centerY,
                                            float startRadius, float endRadius) {

    if(!(view.getParent() instanceof RevealAnimator)){
        throw new IllegalArgumentException("View must be inside RevealFrameLayout or RevealLinearLayout.");
    }

    RevealAnimator revealLayout = (RevealAnimator) view.getParent();
    revealLayout.attachRevealInfo(new RevealInfo(centerX, centerY, startRadius, endRadius,
            new WeakReference<>(view)));

    if(LOLLIPOP_PLUS){
        return new SupportAnimatorLollipop(android.view.ViewAnimationUtils
                .createCircularReveal(view, centerX, centerY, startRadius, endRadius), revealLayout);
    }

    ObjectAnimator reveal = ObjectAnimator.ofFloat(revealLayout, CLIP_RADIUS,
            startRadius, endRadius);
    reveal.addListener(getRevealFinishListener(revealLayout));

    return new SupportAnimatorPreL(reveal, revealLayout);
}
 

import io.codetail.animation.RevealAnimator.RevealInfo; //导入依赖的package包/类
/**
 * Returns an Animator which can animate a clipping circle.
 * <p>
 * Any shadow cast by the View will respect the circular clip from this animator.
 * <p>
 * Only a single non-rectangular clip can be applied on a View at any time.
 * Views clipped by a circular reveal animation take priority over
 * {@link android.view.View#setClipToOutline(boolean) View Outline clipping}.
 * <p>
 * Note that the animation returned here is a one-shot animation. It cannot
 * be re-used, and once started it cannot be paused or resumed.
 *
 * @param view The View will be clipped to the animating circle.
 * @param centerX The x coordinate of the center of the animating circle.
 * @param centerY The y coordinate of the center of the animating circle.
 * @param startRadius The starting radius of the animating circle.
 * @param endRadius The ending radius of the animating circle.
 */
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
public static SupportAnimator createCircularReveal(View view,
                                                   int centerX,  int centerY,
                                                   float startRadius, float endRadius) {

    if(!(view.getParent() instanceof RevealAnimator)){
        throw new IllegalArgumentException("View must be inside RevealFrameLayout or RevealLinearLayout.");
    }

    RevealAnimator revealLayout = (RevealAnimator) view.getParent();
    revealLayout.attachRevealInfo(new RevealInfo(centerX, centerY, startRadius, endRadius,
            new WeakReference<>(view)));

    if(LOLLIPOP_PLUS){
        return new SupportAnimatorLollipop(android.view.ViewAnimationUtils
                .createCircularReveal(view, centerX, centerY, startRadius, endRadius), revealLayout);
    }

    ObjectAnimator reveal = ObjectAnimator.ofFloat(revealLayout, CLIP_RADIUS,
            startRadius, endRadius);
    reveal.addListener(getRevealFinishListener(revealLayout));

    return new SupportAnimatorPreL(reveal, revealLayout);
}