所以在我們的fragment中寫上這樣的程式碼：

public class AndroidFragment extends Fragment {
    private View view;

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        if(view!=null){
            ViewGroup parent =(ViewGroup)view.getParent();
            parent.removeView(view);
        }
        view=inflater.inflate(R.layout.fragment_android,container,false
 
);
        return view;
    }
}

就可以解決