相关疑难解决方法(0)

我有一个问题,我不知道如何解决.你如何隐藏特定片段中的工具栏,我已经在互联网上搜索,我发现的是通信活动和片段将解决它.但它根本不适用于我,这是我的代码:

主要活动:

public class MainActivity extends ActionBarActivity implements like_frag.OnHideToolbar{

....

public void onHidingToolbar(int position){
        Toolbar toolbar = (Toolbar)findViewById(R.id.toolbar);
        if(toolbar == null){
            getSupportActionBar().hide();
        }else{
            getSupportActionBar().hide();
        }
    }

like_frag.java

public class like_frag extends Fragment {

    OnHideToolbar mCallback;
    Toolbar toolbar;

    public interface OnHideToolbar {
        public void onHidingToolbar(int position);
    }

    public void onAttach(Activity activity){

        try{
            mCallback = (OnHideToolbar) activity;
        }catch(ClassCastException e){
            throw new ClassCastException(activity.toString() + "error implementing");
        }
    }
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState){
        View rootView = inflater.inflate(R.layout.swipefrag, container, false);

        toolbar …