fragment+viewpager,在fragment中使用，会报错：

错误
java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.

出错抛异常源码：
ViewGroup

  if (child.getParent() != null) {
            throw new IllegalStateException("The specified child already has a parent. " +
                    "You must call removeView() on the child's parent first.");
        }

使用场景

创建Fragment页面与viewpager关联

        private void createTypeFragment(List<SearchTypeBean> searchTypeBeanList){

        SearchTypeBean beanAll=new SearchTypeBean();
        beanAll.setAction(0);
        beanAll.setTitle(getResources().getString(R.string.search_all_btn));

        searchTypeBeanList.add(0,beanAll);
        mPagerAdapter.refreshFragments(searchTypeBeanList,mKeyword);
        mTypeVp.setOffscreenPageLimit(searchTypeBeanList.size()-1);
        mTypeVp.setAdapter(mPagerAdapter);
        mTypeTabLayout.setupWithViewPager(mTypeVp);

    }

Fragment加载数据，先展示loading，再关闭

推测原因

看代码应该是这段代码出的问题，求解

   public Holder wrap(View view) {
        FrameLayout wrapper = new FrameLayout(view.getContext());
        ViewGroup.LayoutParams lp = view.getLayoutParams();
        if (lp != null) {
            wrapper.setLayoutParams(lp);
        }
        if (view.getParent() != null) {
            ViewGroup parent = (ViewGroup) view.getParent();
            int index = parent.indexOfChild(view);
            parent.removeView(view);
            parent.addView(wrapper, index);
        }
        LayoutParams newLp = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
        wrapper.addView(view, newLp);
        return new Holder(mAdapter, view.getContext(), wrapper);
    }

Start by reproducing the exception in the fragment and ViewPager setup shown in the issue, then inspect the ViewGroup call site and the wrap(View view) method. Trace the view’s parent while loading is shown and removed; done means the fragment can load and dismiss its loading view without the child-already-has-a-parent exception.