SuperSwipeRefreshLayout.java 文件源码

private void animateOffsetToStartPosition(int from,
                                          AnimationListener listener) {
    if (mScale) {
        startScaleDownReturnToStartAnimation(from, listener);
    } else {
        mFrom = from;
        mAnimateToStartPosition.reset();
        mAnimateToStartPosition.setDuration(ANIMATE_TO_START_DURATION);
        mAnimateToStartPosition.setInterpolator(mDecelerateInterpolator);
        if (listener != null) {
            mHeadViewContainer.setAnimationListener(listener);
        }
        mHeadViewContainer.clearAnimation();
        mHeadViewContainer.startAnimation(mAnimateToStartPosition);
    }
    resetTargetLayoutDelay(ANIMATE_TO_START_DURATION);
}