DDM 2022-01-04

MainActivity.java

package com.joythis.android.gmaps22_2;

import androidx.appcompat.app.AppCompatActivity;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;

import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.Spinner;

import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.SupportMapFragment;

import java.util.Calendar;

public class MainActivity extends AppCompatActivity {
    public final static int CALLBACK_CODE_FOR_WHEN_PERMISSIONS_ARE_READY = 123;
    SupportMapFragment mMapFragment;
    FragmentManager mSupportFragmentManager;

    AmGeoMap mAmGoogleMap;
    AmUtil mUtil;

    Spinner mSpnMapType;

    AdapterView.OnItemSelectedListener mItemSelectedHandler = new AdapterView.OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
            String strSelectedOption = parent.getItemAtPosition(position).toString();

            boolean bHybrid = strSelectedOption.compareToIgnoreCase(getString(R.string.strMapTypeHybrid))==0;
            boolean bNone = strSelectedOption.compareToIgnoreCase(getString(R.string.strMapTypeNone))==0;
            boolean bNormal = strSelectedOption.compareToIgnoreCase(getString(R.string.strMapTypeNormal))==0;
            boolean bSat = strSelectedOption.compareToIgnoreCase(getString(R.string.strMapTypeSatellite))==0;
            boolean bTerrain = strSelectedOption.compareToIgnoreCase(getString(R.string.strMapTypeTerrain))==0;

            int iGoogleMapType = 0;
            if (bHybrid) iGoogleMapType = GoogleMap.MAP_TYPE_HYBRID;
            if (bNone) iGoogleMapType = GoogleMap.MAP_TYPE_NONE;
            if (bNormal) iGoogleMapType = GoogleMap.MAP_TYPE_NORMAL;
            if (bSat) iGoogleMapType = GoogleMap.MAP_TYPE_SATELLITE;
            if (bTerrain) iGoogleMapType = GoogleMap.MAP_TYPE_TERRAIN;

            if (mAmGoogleMap !=null) mAmGoogleMap.changeMapType(iGoogleMapType);
        }//mItemSelectedHandler

        @Override
        public void onNothingSelected(AdapterView<?> parent) {
            //do nothing
        }
    };//mItemSelectedHandler

    final float
        DEF_LATITUDE=39.22086f, //ESGTS in decimal degrees
        DEF_LONGITUDE=-8.686735f, //ESGTS in decimal degrees
        DEF_ZOOM=18.0f; //higher value, closer shot

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.rl_map);

        init();
    }//onCreate

    void init(){
        mUtil = new AmUtil(this);

        mSupportFragmentManager = this.getSupportFragmentManager();
        mSpnMapType = findViewById(R.id.idSpnMapType);
        mSpnMapType.setOnItemSelectedListener(mItemSelectedHandler);

        GeoUri someInitialLocation = new GeoUri(
            DEF_LATITUDE,
            DEF_LONGITUDE,
            DEF_ZOOM,
            "ESGTS",
            Calendar.getInstance()
        );

        //AmGeoMap implements OnMapReadyCallback, so its objects can be arguments of getMapAsync
        mAmGoogleMap = new AmGeoMap(
            this,
            CALLBACK_CODE_FOR_WHEN_PERMISSIONS_ARE_READY,
            someInitialLocation
        );

        Fragment f = mSupportFragmentManager.findFragmentById(R.id.idMap);
        mMapFragment = (SupportMapFragment) f;
        mMapFragment.getMapAsync(mAmGoogleMap);
    }//init
}//MainActivity


****
my_arrays.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string-array name="saMapTypes">
        <item>@string/strMapTypeHybrid</item>
        <item>@string/strMapTypeNone</item>
        <item>@string/strMapTypeNormal</item>
        <item>@string/strMapTypeSatellite</item>
        <item>@string/strMapTypeTerrain</item>
    </string-array>
    <string name="strMapTypeTerrain">Terrain</string>
    <string name="strMapTypeSatellite">Satellite</string>
    <string name="strMapTypeNormal">Normal</string>
    <string name="strMapTypeNone">None</string>
    <string name="strMapTypeHybrid">Hybrid</string>
</resources>

******
fragment_to_be_included.xml

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

<fragment xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:map="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/idMap"
    android:name="com.google.android.gms.maps.SupportMapFragment"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity" />

<!--
<fragment android:id="@+id/idMap"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    class="com.google.android.gms.maps.MapFragment"
    xmlns:android="http://schemas.android.com/apk/res/android" />
-->



********
rl_map.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent" android:layout_height="match_parent">

    <TextView
        android:id="@+id/idTvDashboard"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>

    <Spinner
        android:layout_below="@id/idTvDashboard"
        android:id="@+id/idSpnMapType"
        android:entries="@array/saMapTypes"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>

    <include
        android:layout_below="@id/idSpnMapType"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        layout="@layout/fragment_to_be_included"/>
</RelativeLayout>