Can see neither the menu icon nor the blank imageView


#1

LocatrActivity.java

package com.bignerdranch.android.locatr;

import android.app.Dialog;
import android.content.DialogInterface;
import android.os.PersistableBundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GoogleApiAvailability;
import com.google.android.gms.common.api.GoogleApiClient;

public class LocatrActivity extends SingleFragmentActivity {

private static final int REQUEST_ERROR = 0;

@Override
protected Fragment createFragment() {
    return LocatrFragment.newInstance();
}


@Override
protected void onResume() {
    super.onResume();

    GoogleApiAvailability apiAvailability = GoogleApiAvailability.getInstance();
    int errorCode = apiAvailability.isGooglePlayServicesAvailable(this);

    if(errorCode != ConnectionResult.SUCCESS) {
        Dialog errorDialog = apiAvailability.getErrorDialog(this,errorCode,REQUEST_ERROR,new  DialogInterface.OnCancelListener(){

            @Override
            public void onCancel(DialogInterface dialog) {
                // Leave if services are unavailable.
                finish();
            }
        });
        errorDialog.show();
    }

 }
}

LocatrFragment.java

import android.Manifest;
import android.content.pm.PackageManager;
import android.location.Location;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v4.content.ContextCompat;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;

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;

/**
 * Created by Lavoro on 27/05/2018.
 */

public class LocatrFragment extends Fragment {

    private ImageView mImageView;
    private GoogleApiClient mClient;
    private static final String TAG = "LocatrFragment";
    private static final String[] LOCATION_PERMISSIONS = new String[]{
            Manifest.permission.ACCESS_FINE_LOCATION,
            Manifest.permission.ACCESS_COARSE_LOCATION,
    };
    private static final int REQUEST_LOCATION_PERMISSIONS = 0;

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

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setHasOptionsMenu(true);

        mClient = new GoogleApiClient.Builder(getActivity()).addApi(LocationServices.API)
                .addConnectionCallbacks(new GoogleApiClient.ConnectionCallbacks() {
                    @Override
                    public void onConnected(@Nullable Bundle bundle) {
                        getActivity().invalidateOptionsMenu();
                    }

                    @Override
                    public void onConnectionSuspended(int i) {

                    }
                }).build();
    }

    @Override
    public void onStart() {
        super.onStart();
        getActivity().invalidateOptionsMenu();

        mClient.connect();
    }

    @Override
    public void onStop() {
        super.onStop();
        mClient.disconnect();
    }

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_locatr,container,false);

        mImageView = (ImageView) view.findViewById(R.id.image);

        return view;
    }

    @Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
        super.onCreateOptionsMenu(menu, inflater);
        inflater.inflate(R.menu.fragment_locatr,menu);

        MenuItem searchItem = menu.findItem(R.id.action_locate);
        searchItem.setEnabled(mClient.isConnected());
    }


    @Override
    public boolean onOptionsItemSelected(MenuItem item) {

        switch(item.getItemId()) {
            case R.id.action_locate:

                //Check if we have permission for the location
                if(hasLocationPermission()) {
                    findImage();
                } else {
                    requestPermissions(LOCATION_PERMISSIONS,REQUEST_LOCATION_PERMISSIONS);
                }
                return true;

            default:
                return super.onOptionsItemSelected(item);
        }


    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);

        switch(requestCode) {
            case REQUEST_LOCATION_PERMISSIONS:
                if(hasLocationPermission()) {
                    findImage();
                }
            default:
                super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        }
    }

    private boolean hasLocationPermission() {
        int result = ContextCompat.checkSelfPermission(getActivity(),LOCATION_PERMISSIONS[0]);
        return result == PackageManager.PERMISSION_GRANTED;
    }

    private void findImage() {
        LocationRequest request = LocationRequest.create();
        request.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
        request.setNumUpdates(1);
        request.setInterval(0);

        LocationServices.FusedLocationApi
                .requestLocationUpdates(mClient, request, new LocationListener() {
                    @Override
                    public void onLocationChanged(Location location) {
                        Log.i(TAG, "Got a fix: " + location);
                    }
                });
    }
}

SingleFragmentActivity

import android.os.Bundle;
import android.os.PersistableBundle;
import android.support.annotation.LayoutRes;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v7.app.AppCompatActivity;

/**
 * Created by Lavoro on 27/05/2018.
 */

public abstract class SingleFragmentActivity extends AppCompatActivity {

    protected abstract Fragment createFragment();

    @LayoutRes
    private int layoutId() {
        return R.layout.activity_fragment;
    }

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState, @Nullable PersistableBundle persistentState) {
        setContentView(layoutId());

        FragmentManager fm = getSupportFragmentManager();
        Fragment fragment = fm.findFragmentById(R.id.fragment_container);

        if(fragment == null) {
            fragment = createFragment();
            fm.beginTransaction().add(R.id.fragment_container,fragment).commit();
        }
    }
}

activity_fragment.xml
<FrameLayout

    xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/fragment_container">

</FrameLayout>

fragment_locatr.xml
<?xml version="1.0" encoding="utf-8"?>

    <ImageView
        android:layout_width="150dp"
        android:layout_height="150dp"
        android:id="@+id/image"
        android:background="@android:color/white"
        android:layout_centerInParent="true" />



</RelativeLayout>

Menu fragment_locatr.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">
    <item android:id="@+id/action_locate"
        android:title="@string/search"
        android:enabled="false"
        app:showAsAction="ifRoom"
        android:icon="@android:drawable/ic_menu_compass"/>
</menu>

#2

Assuming none of the file shown in your post is cut off, you are missing the starting RelativeLayout tag in the fragment_locatr.xml file.