calendarViewFragment cannot be cast to android.support.v4.app.Fragment

I don't open my calendarView in fragment my source MainActivity package seed.prie.iuc.myiucap;

import android.content.res.Configuration; import android.os.Bundle; import android.support.design.widget.NavigationView; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentManager; import android.support.v4.view.GravityCompat; import android.support.v4.view.ViewPager; import android.support.v4.widget.DrawerLayout; import android.support.v7.app.ActionBarDrawerToggle; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.Toolbar; import android.util.Log; import android.view.MenuItem; import android.widget.Toast;

import com.astuetz.PagerSlidingTabStrip;

import seed.prie.iuc.myiucap.fragment.calendarViewFragment;

public class MainActivity extends AppCompatActivity{ private DrawerLayout drawerLayout; private DrawerLayout mDrawer; private Toolbar toolbar; private NavigationView nvDrawer; private ActionBarDrawerToggle drawerToggle;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
   // Get the ViewPager and set it's PagerAdapter so that it can display items
    ViewPager viewPager = (ViewPager) findViewById(R.id.viewpager);
    viewPager.setAdapter(new SampleFragmentPagerAdapter(getSupportFragmentManager()));

    toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    // Find our drawer view
    mDrawer = (DrawerLayout) findViewById(R.id.drawer_layout);
    drawerToggle = setupDrawerToggle();

    // Tie DrawerLayout events to the ActionBarToggle
    mDrawer.addDrawerListener(drawerToggle);

    // Find our drawer view
    nvDrawer = (NavigationView) findViewById(R.id.nvView);
    // Setup drawer view
    setupDrawerContent(nvDrawer);

    // Give the PagerSlidingTabStrip the ViewPager
    PagerSlidingTabStrip tabsStrip = (PagerSlidingTabStrip) findViewById(R.id.tabs);
    // Attach the view pager to the tab strip
    tabsStrip.setViewPager(viewPager);
   // toolbar = (Toolbar) findViewById(R.id.toolbar);
   // setSupportActionBar(toolbar);

}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // The action bar home/up action should open or close the drawer.
    switch (item.getItemId()) {
        case android.R.id.home:
            mDrawer.openDrawer(GravityCompat.START);
            return true;
    }
    if (drawerToggle.onOptionsItemSelected(item)) {
        return true;
    }
    return super.onOptionsItemSelected(item);
}

private void setupDrawerContent(NavigationView navigationView) {
    navigationView.setNavigationItemSelectedListener(
            new NavigationView.OnNavigationItemSelectedListener() {
                @Override
                public boolean onNavigationItemSelected(MenuItem menuItem) {
                    selectDrawerItem(menuItem);
                    return true;
                }
            });
}
public void selectDrawerItem(MenuItem menuItem) {

    // Create a new fragment and specify the fragment to show based on nav item clicked
    Fragment fragment = null;
    Class fragmentClass;
    switch(menuItem.getItemId()) {
        case R.id.nav_Accueil:
            fragmentClass = calendarViewFragment.class;
            break;
        case R.id.nav_aide:
            fragmentClass = calendarViewFragment.class;
           //fragmentClass = SecondFragment.class;
            break;
        case R.id.nav_Apropos:
            fragmentClass = calendarViewFragment.class;
           // fragmentClass = ThirdFragment.class;
            break;
        case R.id.nav_deconnexion:
            fragmentClass = calendarViewFragment.class;
            // fragmentClass = ThirdFragment.class;
            break;
        case R.id.nav_ETD:
            fragmentClass = calendarViewFragment.class;
           // fragmentClass = ThirdFragment.class;
            break;
        case R.id.nav_note:
            fragmentClass = calendarViewFragment.class;
           // fragmentClass = ThirdFragment.class;
            break;
        case R.id.nav_parametre:
            fragmentClass = calendarViewFragment.class;
           // fragmentClass = ThirdFragment.class;
            break;
        case R.id.nav_sco:
            fragmentClass = calendarViewFragment.class;
           // fragmentClass = ThirdFragment.class;
            break;
        default:
            fragmentClass = calendarViewFragment.class;
         //  fragmentClass = FirstFragment.class;
    }

    try {
        fragment = (Fragment) fragmentClass.newInstance();
    } catch (Exception e) {
        Log.d("ERREUR", e.getMessage());
        e.printStackTrace();
    }

    // Insert the fragment by replacing any existing fragment
    FragmentManager fragmentManager = getSupportFragmentManager();
    fragmentManager.beginTransaction().replace(R.id.flContent, fragment).commit();

    // Highlight the selected item has been done by NavigationView
    menuItem.setChecked(true);
    // Set action bar title
   //setTitle(menuItem.getTitle());
    // Close the navigation drawer
  //  mDrawer.closeDrawers();
}

private ActionBarDrawerToggle setupDrawerToggle() {
    // NOTE: Make sure you pass in a valid toolbar reference.  ActionBarDrawToggle() does not require it
    // and will not render the hamburger icon without it.
    return new ActionBarDrawerToggle(this, mDrawer, toolbar, R.string.drawer_open,  R.string.drawer_close);
}

@Override
protected void onPostCreate(Bundle savedInstanceState) {
    super.onPostCreate(savedInstanceState);
    // Sync the toggle state after onRestoreInstanceState has occurred.
    drawerToggle.syncState();
}

@Override
public void onConfigurationChanged(Configuration newConfig) {
    super.onConfigurationChanged(newConfig);
    // Pass any configuration change to the drawer toggles
    drawerToggle.onConfigurationChanged(newConfig);
}

}

my source calendarViewFragment package seed.prie.iuc.myiucap.fragment;

import android.app.Activity; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v4.content.ContextCompat; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup;

import com.github.tibolte.agendacalendarview.AgendaCalendarView; import com.github.tibolte.agendacalendarview.CalendarPickerController; import com.github.tibolte.agendacalendarview.models.BaseCalendarEvent; import com.github.tibolte.agendacalendarview.models.CalendarEvent; import com.github.tibolte.agendacalendarview.models.DayItem;

import java.util.ArrayList; import java.util.Calendar; import java.util.List; import java.util.Locale;

import seed.prie.iuc.myiucap.MainActivity; import seed.prie.iuc.myiucap.R; import seed.prie.iuc.myiucap.edt.emploiTemps;

/**

Created by Franck Mbakop on 16/11/2016. */

public class calendarViewFragment extends Fragment implements CalendarPickerController { private static final String LOG_TAG = emploiTemps.class.getSimpleName(); AgendaCalendarView mAgendaCalendarView;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    //super.onCreate(savedInstanceState);
    //setContentView(R.layout.emploitemps);
    View view  = inflater.inflate(R.layout.emploitemps, container, false);
    Calendar minDate = Calendar.getInstance();
    Calendar maxDate = Calendar.getInstance();

    minDate.add(Calendar.MONTH, -2);
    minDate.set(Calendar.DAY_OF_MONTH, 1);
    maxDate.add(Calendar.YEAR, 1);

    List<CalendarEvent> eventList = new ArrayList<>();
    mockList(eventList);
    mAgendaCalendarView.init(eventList, minDate, maxDate, Locale.getDefault(), this);
return view;
}

private void mockList(List<CalendarEvent> eventList) {
    Calendar startTime1 = Calendar.getInstance();
    Calendar endTime1 = Calendar.getInstance();
    endTime1.add(Calendar.MONTH, 1);
    BaseCalendarEvent event1 = new BaseCalendarEvent("Thibault travels in Iceland", "A wonderful journey!", "Iceland",
            ContextCompat.getColor(getContext(), R.color.orange_dark), startTime1, endTime1, true);
    eventList.add(event1);

    Calendar startTime2 = Calendar.getInstance();
    startTime2.add(Calendar.DAY_OF_YEAR, 1);
    Calendar endTime2 = Calendar.getInstance();
    endTime2.add(Calendar.DAY_OF_YEAR, 3);
    BaseCalendarEvent event2 = new BaseCalendarEvent("Visit to Dalvík", "A beautiful small town", "Dalvík",
            ContextCompat.getColor(getContext(), R.color.yellow), startTime2, endTime2, true);
    eventList.add(event2);

    // Example on how to provide your own layout
    Calendar startTime3 = Calendar.getInstance();
    Calendar endTime3 = Calendar.getInstance();
    startTime3.set(Calendar.HOUR_OF_DAY, 14);
    startTime3.set(Calendar.MINUTE, 0);
    endTime3.set(Calendar.HOUR_OF_DAY, 15);
    endTime3.set(Calendar.MINUTE, 0);
    BaseCalendarEvent event3 = new BaseCalendarEvent("Visit of Harpa", "", "Dalvík",
            ContextCompat.getColor(getContext(), R.color.blue_dark), startTime3, endTime3, false);
    eventList.add(event3);
}

@Override
public void onEventSelected(CalendarEvent event) {
    Log.d(LOG_TAG, String.format("Selected day: %s", event));
}

@Override
public void onScrollToDate(Calendar calendar) {
   /* if (getSupportActionBar() != null) {
        getSupportActionBar().setTitle(calendar.getDisplayName(Calendar.MONTH, Calendar.LONG, Locale.getDefault()));
    }*/
}

@Override
public void onDaySelected(DayItem dayItem) {
    Log.d(LOG_TAG, String.format("Selected day: %s", dayItem));
}

}

Tibolte / AgendaCalendarView

calendarViewFragment cannot be cast to android.support.v4.app.Fragment #95