Cannot resolve required android.app.fragment AndroidStudio : I have AppointmentView Class and a FragmentMap Class. I want to insert the fragmentinto my AppointmentView activity using FragmentManager and FragmentTransaction, but i have one error that i dont know how to fix.

[Image that shows the error ][1]
   
  [1]: https://imgur.com/FT1PVMe

Can anyone tell me what am i doing wrong. PS: Below you have the source code for AppointmentView and FragmentMap 


    import android.app.Fragment;
    import android.app.FragmentManager;
    import android.app.FragmentTransaction;
    import android.content.Context;
    import android.content.Intent;
    import android.os.Bundle;
    import android.support.annotation.Nullable;
    import android.support.design.widget.FloatingActionButton;
    import android.support.design.widget.Snackbar;
    import android.support.v7.app.AppCompatActivity;
    import android.support.v7.widget.Toolbar;
    import android.util.AttributeSet;
    import android.view.LayoutInflater;
    import android.view.View;
    import android.view.ViewGroup;
    import android.widget.Button;
    import android.widget.TextView;
    import com.google.android.gms.maps.GoogleMap;
    import com.google.android.gms.maps.MapFragment;
    import com.google.android.gms.maps.OnMapReadyCallback;
    import com.google.android.gms.maps.SupportMapFragment;

    import org.w3c.dom.Text;

    public class AppointmentView extends AppCompatActivity implements 
    OnMapReadyCallback {
    Button btn;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_appointment_view);

              FragmentManager fragmentManager = getFragmentManager();
        FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
        FragmentMap fragmentMap = new FragmentMap();
        fragmentTransaction.add(R.id.fragment_container, fragmentMap, "FragmentiDy");
        fragmentTransaction.commit();

        

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

        TextView text=(TextView)findViewById(R.id.infoFirstname);
        TextView txtlastname=(TextView)findViewById(R.id.infoLastname);
        TextView txtAddress=(TextView)findViewById(R.id.infoAddress);


        Intent i=getIntent();
        String firstname=i.getStringExtra("Name");
        String lastname=i.getStringExtra("Lastname");
        String address=i.getStringExtra("Address");
        text.setText(firstname);
        txtlastname.setText(lastname);
        txtAddress.setText(address);


        btn=(Button)findViewById(R.id.btn);
        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent=new Intent(AppointmentView.this,Feedback.class);
                startActivity(intent);

            }
        });


        FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                //Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                //      .setAction("Action", null).show();
                Intent i=new Intent(AppointmentView.this,MapActivity.class);
                startActivity(i);
            }
        });


    }




    @Override
    public void onMapReady(GoogleMap googleMap) {

    }}


    

     import android.content.Context;
     import android.content.pm.PackageManager;
     import android.location.Address;
     import android.location.Geocoder;
     import android.location.Location;
     import android.os.Build;
     import android.os.Bundle;
     import android.app.Fragment;
     import android.support.annotation.NonNull;
     import android.support.annotation.Nullable;
     import android.support.v4.app.ActivityCompat;
     import android.support.v4.app.FragmentActivity;
     import android.util.AttributeSet;
     import android.view.LayoutInflater;
     import android.view.View;
     import android.view.ViewGroup;
     import android.widget.LinearLayout;
     import android.widget.Toast;

     import com.google.android.gms.common.ConnectionResult;
     import com.google.android.gms.common.api.GoogleApiClient;
     import com.google.android.gms.location.LocationListener;
     import com.google.android.gms.location.LocationRequest;
     import com.google.android.gms.location.LocationServices;
     import com.google.android.gms.maps.CameraUpdate;
     import com.google.android.gms.maps.CameraUpdateFactory;
     import com.google.android.gms.maps.GoogleMap;
     import com.google.android.gms.maps.MapView;
     import com.google.android.gms.maps.MapsInitializer;
     import com.google.android.gms.maps.OnMapReadyCallback;
     import com.google.android.gms.maps.SupportMapFragment;
     import com.google.android.gms.maps.UiSettings;
     import com.google.android.gms.maps.model.CameraPosition;
     import com.google.android.gms.maps.model.LatLng;
     import com.google.android.gms.maps.model.MarkerOptions;

     import java.io.IOException;
     import java.util.List;


    /**
    * A simple {@link Fragment} subclass.
    */
    public class FragmentMap extends FragmentActivity implements 
    OnMapReadyCallback, GoogleApiClient.ConnectionCallbacks, 
    GoogleApiClient.OnConnectionFailedListener, LocationListener {

    GoogleMap mMap;
    UiSettings mUiSettings;
    GoogleApiClient mGoogleApiClient;
    MapView mMapView;
    View mView;

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


    @Override
    public View onCreateView(View parent, String name, Context context, AttributeSet attrs) {
        mView = super.onCreateView(parent, name, context, attrs);
        return mView;
    }

    @Override
    public void onMapReady(GoogleMap googleMap) {
        mMap = googleMap;



      /*  // Add a marker in Sydney, Australia, and move the camera.
        LatLng sydney = new LatLng(-34, 151);
        mMap.getUiSettings().setZoomControlsEnabled(true);
        mMap.getUiSettings().setCompassEnabled(true);
        mMap.getUiSettings().setMyLocationButtonEnabled(true);
        mMap.getUiSettings().setIndoorLevelPickerEnabled(true);
        mMap.addMarker(new MarkerOptions().position(getLocationFromAddress(getApplicationContext(),"Gnjilane")).title("Marker in Sydney"));
        mMap.moveCamera(CameraUpdateFactory.newLatLng(getLocationFromAddress(getApplicationContext(),"Gnjilane")));
        mMap.animateCamera(CameraUpdateFactory.zoomTo(12.0f)); */

        mGoogleApiClient = new GoogleApiClient.Builder(this)
                .addApi(LocationServices.API)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .build();

        mGoogleApiClient.connect();

    }

    public LatLng getLocationFromAddress(Context context, String strAddress) {

        Geocoder coder = new Geocoder(context);
        List<Address> address;
        LatLng p1 = null;

        try {
            // May throw an IOException
            address = coder.getFromLocationName(strAddress, 5);
            if (address == null) {
                return null;
            }
            Address location = address.get(0);
            location.getLatitude();
            location.getLongitude();

            p1 = new LatLng(location.getLatitude(), location.getLongitude());

        } catch (IOException ex) {

            ex.printStackTrace();
        }

        return p1;
    }

    LocationRequest mLocationRequest;

    @Override
    public void onConnected(@Nullable Bundle bundle) {
        mLocationRequest = LocationRequest.create();
        mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
        mLocationRequest.setInterval(1000);

        if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED)
            if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
                // TODO: Consider calling
                //    ActivityCompat#requestPermissions
                // here to request the missing permissions, and then overriding
                //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
                //                                          int[] grantResults)
                // to handle the case where the user grants the permission. See the documentation
                // for ActivityCompat#requestPermissions for more details.
                return;
            }
        LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);

    }

    @Override
    public void onConnectionSuspended(int i) {

    }

    @Override
    public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {

    }

    @Override
    public void onLocationChanged(Location location) {
        if(location==null) {
            Toast.makeText(this, "Cant get current location", Toast.LENGTH_LONG).show();
        }
        else {
            LatLng ll = new LatLng(location.getLatitude(), location.getLongitude());
            CameraUpdate update = CameraUpdateFactory.newLatLngZoom(ll,15);
            mMap.animateCamera(update);

        }
    }}
