YViewPagerNew.java 文件源码

private void dispatchOnPageScrolled(int position, float offset, int offsetPixels) {
    int newPosition = isCirculatory ? position % mAdapter.getCount() : position;
    if (mOnPageChangeListener != null) {
        mOnPageChangeListener.onPageScrolled(newPosition, offset, offsetPixels);
    }
    if (mOnPageChangeListeners != null) {
        for (int i = 0, z = mOnPageChangeListeners.size(); i < z; i++) {
            ViewPager.OnPageChangeListener listener = mOnPageChangeListeners.get(i);
            if (listener != null) {
                listener.onPageScrolled(newPosition, offset, offsetPixels);
            }
        }
    }
    if (mInternalPageChangeListener != null) {
        mInternalPageChangeListener.onPageScrolled(newPosition, offset, offsetPixels);
    }
}