android Fragment View的缓存以实现重复利用

public class HotFragment extends Fragment {

private View mRootView;//缓存fragment View
private RecyclerView mRecycleView;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

if(mRootView==null){
mRootView=inflater.inflate(R.layout.fragment_listview,null);
}
//缓存的rootView需要判断是否已经被加过parent， 如果有parent则从parent删除，防止发生这个rootview已经有parent的错误。
ViewGroup mViewGroup = (ViewGroup)mRootView.getParent();
if(mViewGroup!=null){
mViewGroup.removeView(mRootView);
}
return mRootView;
}

}