Debug replace()

event_fragment_layout

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.abhiroj.goonj.fragment.EventsFragment">

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical">
    <TextView
        android:id="@+id/event1"
        android:text="@string/event1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <TextView
        android:id="@+id/event2"
        android:text="@string/event2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />


    <TextView
        android:id="@+id/event3"
        android:text="@string/event3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    </LinearLayout>


</FrameLayout>

EventFragment.java

/**
 * A simple {@link Fragment} subclass.
 */
public class EventsFragment extends Fragment {


    public static String TAG=EventsFragment.class.getSimpleName();
    private Context context;

    public EventsFragment() {
        // Required empty public constructor
    }

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    context=getContext();
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {

        Toolbar toolbar=(Toolbar) getActivity().findViewById(R.id.toolbar);
        toolbar.setTitle("Events");
        // Inflate the layout for this fragment
        View rootView=inflater.inflate(R.layout.fragment_events, container,false);
        TextView event1=(TextView) rootView.findViewById(R.id.event1);
        event1.setText("RAndome Text");
        return rootView;
    }

    public static EventsFragment newInstance() {
        return new EventsFragment();
    }
}

swpa function in main activity

private void swapFragment(String cardname) {
        switch (cardname) {
            case "Events":
                EventsFragment eventsFragment = EventsFragment.newInstance();
                fragtag.put(EventsFragment.TAG, eventsFragment);
                fragmentManager.beginTransaction().replace(R.id.fragment_container, eventsFragment, EventsFragment.TAG).commit();
                break;
            case "Latest Updates":
                //TODO: Latest Updates Fragment
                break;
            case "Team":
                // TODO: Team Fragment
                break;
            case "Register":
                // TODO: Register Fragment
                break;
            case "Main Fragment":
                MainFragment mainfrag = new MainFragment();
                fragtag.put(mainfrag.TAG, mainfrag);
                fragmentManager.beginTransaction().add(R.id.fragment_container, mainfrag, MainFragment.TAG).addToBackStack(MainFragment.TAG).commit();
                break;
            default:
                Toast.makeText(MainActivity.this, R.string.wrong_choice, Toast.LENGTH_SHORT).show();
        }


    }