You must call removeView() on the child'

报错截取：

  java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.         at android.view.ViewGroup.addViewInner(ViewGroup.java:4070)         at android.view.ViewGroup.addView(ViewGroup.java:3920)         at android.view.ViewGroup.addView(ViewGroup.java:3861)         at android.view.ViewGroup.addView(ViewGroup.java:3834)

关于这个报错问题 曾出现过两次

1、ViewPager 的 轮播时出现2、点击RadioButton时 切换Fragment 出现报错

第一个问题 解决

这是在ViewPager的适配器中

 @Override        public Object instantiateItem(ViewGroup container, int position) {            position%=mImageViewsFoot.size();            if(position<0){                position=mImageViewsFoot.size()+position;            }            ImageView img=mImageViewsFoot.get(position);            ViewParent viewParent=img.getParent();            if(viewParent!=null){                ViewGroup viewGroup= (ViewGroup) viewParent;                viewGroup.removeView(img);            }            container.addView(img);            return img;        }        @Override        public void destroyItem(ViewGroup container, int position, Object object) {        }

第二个问题 解决

因为 没有 返回attachToRoot == false

 /**     * @param resource ID for an XML layout resource to load 填充界面ID     * @param root 如果有父容器 则写  ;  没有 则写null     * @param attachToRoot 他会自动把layout加到View hierarchy中     * @return 返回界面     */    public View inflate(@LayoutRes int resource, @Nullable ViewGroup root, boolean attachToRoot)

  public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {        View view = inflater.inflate(R.layout.sub_recommand_fragment,container,false);