Set map type for Google Maps Activity using Google Maps Android API v2

Further works on the example "Display "Legal Notices" for Google Maps Android API v2 on Options Menu", to add option for users to select Map Type.

To set map type, call the setMapType() method og GoogleMap object.

Modify from the example "Display "Legal Notices" for Google Maps Android API v2 on Options Menu":

Edit menu/activity_main.xml to add options for map type

<?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/menu_about"
        android:orderInCategory="100"
        app:showAsAction="ifRoom"
        android:title="@string/menu_about"/>
    <item
        android:id="@+id/maptype"
        android:orderInCategory="100"
        app:showAsAction="never"
        android:title="Map Type...">
        <menu >
            <group android:id="@+id/groupmaptype"
                android:checkableBehavior="single">
                <item android:id="@+id/maptypeNORMAL"
                    android:title="NORMAL" />
                <item android:id="@+id/maptypeSATELLITE"
                    android:title="SATELLITE" />
                <item android:id="@+id/maptypeTERRAIN"
                    android:title="TERRAIN" />
                <item android:id="@+id/maptypeHYBRID"
                    android:title="HYBRID" />
                <item android:id="@+id/maptypeNONE"
                    android:title="NONE" />

            </group>
        </menu>

    </item>
    <item
        android:id="@+id/menu_legalnotices"
        android:orderInCategory="100"
        app:showAsAction="never"
        android:title="@string/menu_legalnotices"/>


</menu>

Edit MapsActivity.java to call mMap.setMapType() once users selected.

package com.blogspot.android_er.androidstudiomapapp;

        import android.app.AlertDialog;
        import android.content.DialogInterface;
        import android.content.Intent;
        import android.net.Uri;
        import android.os.Bundle;
        import android.support.v7.app.AppCompatActivity;
        import android.view.Menu;
        import android.view.MenuItem;

        import com.google.android.gms.common.GoogleApiAvailability;
        import com.google.android.gms.maps.CameraUpdateFactory;
        import com.google.android.gms.maps.GoogleMap;
        import com.google.android.gms.maps.OnMapReadyCallback;
        import com.google.android.gms.maps.SupportMapFragment;
        import com.google.android.gms.maps.model.LatLng;
        import com.google.android.gms.maps.model.MarkerOptions;

public class MapsActivity extends AppCompatActivity implements OnMapReadyCallback {

    private GoogleMap mMap;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_maps);
        // Obtain the SupportMapFragment and get notified when the map is ready to be used.
        SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
                .findFragmentById(R.id.map);
        mapFragment.getMapAsync(this);

    }

    /**
     * Manipulates the map once available.
     * This callback is triggered when the map is ready to be used.
     * This is where we can add markers or lines, add listeners or move the camera. In this case,
     * we just add a marker near Sydney, Australia.
     * If Google Play services is not installed on the device, the user will be prompted to install
     * it inside the SupportMapFragment. This method will only be triggered once the user has
     * installed Google Play services and returned to the app.
     */
    @Override
    public void onMapReady(GoogleMap googleMap) {
        mMap = googleMap;

        // Add a marker in Sydney and move the camera
        LatLng sydney = new LatLng(-34, 151);
        mMap.addMarker(new MarkerOptions().position(sydney).title("Marker in Sydney"));
        mMap.moveCamera(CameraUpdateFactory.newLatLng(sydney));
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return super.onCreateOptionsMenu(menu);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case R.id.maptypeHYBRID:
                if(mMap != null){
                    mMap.setMapType(GoogleMap.MAP_TYPE_HYBRID);
                    return true;
                }
            case R.id.maptypeNONE:
                if(mMap != null){
                    mMap.setMapType(GoogleMap.MAP_TYPE_NONE);
                    return true;
                }
            case R.id.maptypeNORMAL:
                if(mMap != null){
                    mMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
                    return true;
                }
            case R.id.maptypeSATELLITE:
                if(mMap != null){
                    mMap.setMapType(GoogleMap.MAP_TYPE_SATELLITE);
                    return true;
                }
            case R.id.maptypeTERRAIN:
                if(mMap != null){
                    mMap.setMapType(GoogleMap.MAP_TYPE_TERRAIN);
                    return true;
                }
            case R.id.menu_legalnotices:
                String LicenseInfo = GoogleApiAvailability
                        .getInstance()
                        .getOpenSourceSoftwareLicenseInfo(MapsActivity.this);
                AlertDialog.Builder LicenseDialog =
                        new AlertDialog.Builder(MapsActivity.this);
                LicenseDialog.setTitle("Legal Notices");
                LicenseDialog.setMessage(LicenseInfo);
                LicenseDialog.show();
                return true;
            case R.id.menu_about:
                AlertDialog.Builder aboutDialogBuilder =
                        new AlertDialog.Builder(MapsActivity.this);
                aboutDialogBuilder.setTitle("About Me")
                        .setMessage("http://android-er.blogspot.com");

                aboutDialogBuilder.setPositiveButton("visit",
                        new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        String url = "http://android-er.blogspot.com";
                        Intent i = new Intent(Intent.ACTION_VIEW);
                        i.setData(Uri.parse(url));
                        startActivity(i);
                    }
                });

                aboutDialogBuilder.setNegativeButton("Dismiss",
                        new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.cancel();
                    }
                });

                AlertDialog aboutDialog = aboutDialogBuilder.create();
                aboutDialog.show();

                return true;
        }
        return super.onOptionsItemSelected(item);
    }
}

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~ Step-by-step of Android Google Maps Activity using Google Maps Android API v2, on Android Studio.