ListView隐藏HeadView

把HeadView及其子View的Visibility都设置成GONE就行了，只设置HeadView的Visibility不行；

private void setHeadViewVisibility(int visibility){
    headlineView.setVisibility(visibility);
    int childCount=headlineView.getChildCount();
    for (int i = 0; i <childCount; i++) {
        headlineView.getChildAt(i).setVisibility(visibility);
    }
}