ZhihuUserProfileLayout.java 文件源码

@Override
public void scrollTo(@Px int x, @Px int y) {
    if (y >= mMaxScrollY) {
        y = mMaxScrollY;
    } else if (y <= 0) {
        y = 0;
    }
    if (mOnCollapsingListener != null) {
        float progress = 1.0f - (float) y / (float) mMaxScrollY;
        if (BuildConfig.DEBUG) Log.d(TAG, "collapsing progress = " + progress);
        mOnCollapsingListener.onCollapsing(progress);
    }
    mCurrentScrollY = y;
    super.scrollTo(x, y);
}