KeyPreviewDrawParams.java 文件源码

public Animator createShowUpAnimator(final View target) {
    if (mHasCustomAnimationParams) {
        final ObjectAnimator scaleXAnimator = ObjectAnimator.ofFloat(
                target, View.SCALE_X, mShowUpStartXScale,
                KEY_PREVIEW_SHOW_UP_END_SCALE);
        final ObjectAnimator scaleYAnimator = ObjectAnimator.ofFloat(
                target, View.SCALE_Y, mShowUpStartYScale,
                KEY_PREVIEW_SHOW_UP_END_SCALE);
        final AnimatorSet showUpAnimator = new AnimatorSet();
        showUpAnimator.play(scaleXAnimator).with(scaleYAnimator);
        showUpAnimator.setDuration(mShowUpDuration);
        showUpAnimator.setInterpolator(DECELERATE_INTERPOLATOR);
        return showUpAnimator;
    }
    final Animator animator = AnimatorInflater.loadAnimator(
            target.getContext(), mShowUpAnimatorResId);
    animator.setTarget(target);
    animator.setInterpolator(DECELERATE_INTERPOLATOR);
    return animator;
}