XListView.java 文件源码

private void initWithContext(Context context) {
    setFadingEdgeLength(0); // 消除边界模糊
    setOverScrollMode(View.OVER_SCROLL_NEVER); // 消除滚动边框

    mScroller = new Scroller(context, new DecelerateInterpolator());
    // XListView need the scroll event, and it will dispatch the event to
    // user's listener (as a proxy).
    super.setOnScrollListener(this);

    // init header view
    mHeaderView = new XListViewHeader(context);
    mHeaderViewContent = (RelativeLayout) mHeaderView
            .findViewById(R.id.xlistview_header_content);
    mHeaderTimeView = (TextView) mHeaderView.findViewById(R.id.xlistview_header_time);
    addHeaderView(mHeaderView);

    // init footer view
    mFooterView = new XListViewFooter(context);

    // init header height
    mHeaderView.getViewTreeObserver().addOnGlobalLayoutListener(
            new OnGlobalLayoutListener() {
                @SuppressWarnings("deprecation")
                @Override
                public void onGlobalLayout() {
                    mHeaderViewHeight = mHeaderViewContent.getHeight();
                    getViewTreeObserver()
                    .removeGlobalOnLayoutListener(this);
                }
            });
}