Android #10

Vamos fazer uma rota de onde você se encontra para a academia que você escolheu, ao clicar no botão COMO CHEGAR.

Vamos utilizar o Google Maps, outra opção que eu vi é o Mapbox só que não consegui fazer funcionar com essa biblioteca.

Para utilizar o Google Maps você precisar criar um projeto na plataforma do Google para poder gerar uma chave de acesso. (Não sabe criar um projeto? Siga os primeiros passos desse tutorial)

Siga esse tutorial para obter a chave de acesso: Guia rápido: como obter uma Chave de API do Google Maps?

Outra API que devemos ativar é a Direction API, veja o passo 11 desse tutorial.

Agora vamos aos arquivos e veja os códigos:

Table of Contents

build.gradle

apply plugin: 'com.android.application'
//apply plugin: 'kotlin-android'

android {
    compileSdkVersion 30

    defaultConfig {
        applicationId "br.com.micheladrianomedeiros.ondetreinar"
        minSdkVersion 19
        targetSdkVersion 30
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility = 1.8
        targetCompatibility = 1.8
    }

    android {
        buildFeatures{
            dataBinding = true
            viewBinding = true
        }
    }

}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])

    implementation 'androidx.appcompat:appcompat:1.2.0'
    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
    implementation 'com.google.android.material:material:1.2.0'
    implementation 'androidx.navigation:navigation-fragment:2.3.0'
    implementation 'androidx.navigation:navigation-ui:2.3.0'
    testImplementation 'junit:junit:4.13'
    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'

    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'

    //gson
    implementation 'com.google.code.gson:gson:2.8.6'

    def recyclerview_version = "1.0.0"
    implementation "androidx.recyclerview:recyclerview:$recyclerview_version"
    implementation "androidx.recyclerview:recyclerview-selection:$recyclerview_version"
    implementation 'com.github.bumptech.glide:glide:4.8.0'
    annotationProcessor 'com.github.bumptech.glide:compiler:4.8.0'

    implementation 'com.squareup.picasso:picasso:2.71828'

    //Google Maps
    implementation 'com.google.android.gms:play-services-maps:17.0.0'
    implementation 'com.google.android.gms:play-services-location:17.0.0'
    androidTestImplementation 'androidx.test:runner:1.2.0'
}

apply plugin: 'com.android.application'

//apply plugin: 'kotlin-android'

android {

compileSdkVersion 30

defaultConfig {

applicationId "br.com.micheladrianomedeiros.ondetreinar"

minSdkVersion 19

targetSdkVersion 30

versionCode 1

versionName "1.0"

testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"

}

buildTypes {

release {

minifyEnabled false

proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'

}

compileOptions {

sourceCompatibility = 1.8

targetCompatibility = 1.8

}

android {

buildFeatures{

dataBinding = true

viewBinding = true

}

dependencies {

implementation fileTree(dir: 'libs', include: ['*.jar'])

implementation 'androidx.appcompat:appcompat:1.2.0'

implementation 'androidx.constraintlayout:constraintlayout:1.1.3'

implementation 'com.google.android.material:material:1.2.0'

implementation 'androidx.navigation:navigation-fragment:2.3.0'

implementation 'androidx.navigation:navigation-ui:2.3.0'

testImplementation 'junit:junit:4.13'

androidTestImplementation 'androidx.test.ext:junit:1.1.1'

androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'

implementation 'androidx.constraintlayout:constraintlayout:1.1.3'

//gson

implementation 'com.google.code.gson:gson:2.8.6'

def recyclerview_version = "1.0.0"

implementation "androidx.recyclerview:recyclerview:$recyclerview_version"

implementation "androidx.recyclerview:recyclerview-selection:$recyclerview_version"

implementation 'com.github.bumptech.glide:glide:4.8.0'

annotationProcessor 'com.github.bumptech.glide:compiler:4.8.0'

implementation 'com.squareup.picasso:picasso:2.71828'

//Google Maps

implementation 'com.google.android.gms:play-services-maps:17.0.0'

implementation 'com.google.android.gms:play-services-location:17.0.0'

androidTestImplementation 'androidx.test:runner:1.2.0'

}

activity_como_chegar.xml

Esse arquivo é a tela que mostra o mapa com a rota. Para criar essa tela escolha a activity que já vem preparada para mapas.

<?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/map"
    android:name="com.google.android.gms.maps.SupportMapFragment"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".mapa.ComoChegar" />

<?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/map"

android:name="com.google.android.gms.maps.SupportMapFragment"

android:layout_width="match_parent"

android:layout_height="match_parent"

tools:context=".mapa.ComoChegar" />

AndroidManifest.xml

As seguintes declarações: @string/google_maps_key e @integer/google_play_services_version.

O primeiro está no arquivo google_maps_api.xml.

<resources>
    <string name="google_maps_key" templateMergeStrategy="preserve" translatable="false">Coloque aqui a sua chave</string>
</resources>

<string name="google_maps_key" templateMergeStrategy="preserve" translatable="false">Coloque aqui a sua chave</string>

</resources>

O segundo está no arquivo values.xml, esse arquivo não fica visível para você, ele está na pasta do gradle.

Pelo que eu lembre esses dois arquivos são gerados automaticamente.

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="br.com.micheladrianomedeiros.ondetreinar">

    <!--
         The ACCESS_COARSE/FINE_LOCATION permissions are not required to use
         Google Maps Android API v2, but you must specify either coarse or fine
         location permissions for the "MyLocation" functionality.
    -->
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme"
        android:usesCleartextTraffic="true">

        <!--
             The API key for Google Maps-based APIs is defined as a string resource.
             (See the file "res/values/google_maps_api.xml").
             Note that the API key is linked to the encryption key used to sign the APK.
             You need a different API key for each encryption key, including the release key that is used to
             sign the APK for publishing.
             You can define the keys for the debug and release targets in src/debug/ and src/release/.
        -->
        <meta-data
            android:name="com.google.android.geo.API_KEY"
            android:value="@string/google_maps_key" />

        <meta-data
            android:name="com.google.android.gms.version"
            android:value="@integer/google_play_services_version" />

        <activity
            android:name=".mapa.ComoChegar"
            android:label="@string/title_activity_como_chegar"></activity>
        <activity
            android:name=".DetalheActivity"
            android:label="@string/title_activity_detalhe"
            android:theme="@style/AppTheme.NoActionBar" />
        <activity android:name=".ReviewList" />
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

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

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

package="br.com.micheladrianomedeiros.ondetreinar">

<!--

The ACCESS_COARSE/FINE_LOCATION permissions are not required to use

Google Maps Android API v2, but you must specify either coarse or fine

location permissions for the "MyLocation" functionality.

-->

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />

<uses-permission android:name="android.permission.INTERNET" />

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>

<application

android:allowBackup="true"

android:icon="@mipmap/ic_launcher"

android:label="@string/app_name"

android:roundIcon="@mipmap/ic_launcher_round"

android:supportsRtl="true"

android:theme="@style/AppTheme"

android:usesCleartextTraffic="true">

<!--

The API key for Google Maps-based APIs is defined as a string resource.

(See the file "res/values/google_maps_api.xml").

Note that the API key is linked to the encryption key used to sign the APK.

You need a different API key for each encryption key, including the release key that is used to

sign the APK for publishing.

You can define the keys for the debug and release targets in src/debug/ and src/release/.

-->

<meta-data

android:name="com.google.android.geo.API_KEY"

android:value="@string/google_maps_key" />

<meta-data

android:name="com.google.android.gms.version"

android:value="@integer/google_play_services_version" />

<activity

android:name=".mapa.ComoChegar"

android:label="@string/title_activity_como_chegar"></activity>

<activity

android:name=".DetalheActivity"

android:label="@string/title_activity_detalhe"

android:theme="@style/AppTheme.NoActionBar" />

<intent-filter>

</intent-filter>

</activity>

</application>

</manifest>

DetalheActivity.java

Adicionei nesse arquivo a linha public static String ENDERECO_ACADEMIA = null; para ser utilizado no arquivo ComoChegar.java.

package br.com.micheladrianomedeiros.ondetreinar;

import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.RatingBar;
import android.widget.TextView;

import androidx.appcompat.app.AppCompatActivity;

import com.squareup.picasso.Picasso;

import br.com.micheladrianomedeiros.ondetreinar.adapters.CustomAdapter;
import br.com.micheladrianomedeiros.ondetreinar.mapa.ComoChegar;
import br.com.micheladrianomedeiros.ondetreinar.model.DetalheAcademia;
import br.com.micheladrianomedeiros.ondetreinar.remote.HTTPService;

public class DetalheActivity extends AppCompatActivity {

    private TextView nomeDaAcademia, enderecoAcademia, telefoneAcademia, tipoAcademia, siteAcademia;
    private ImageView imageView;
    private RatingBar notaAcademia;
    private Button comoChegar;

    public static String ENDERECO_ACADEMIA = null;

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

        nomeDaAcademia = findViewById(R.id.nomeDaAcademia);
        imageView = findViewById(R.id.imagemDaAcademia);

        enderecoAcademia = findViewById(R.id.enderecoAcademia);
        telefoneAcademia = findViewById(R.id.telefoneAcademia);
        tipoAcademia = findViewById(R.id.tipoDeAcademia);
        siteAcademia = findViewById(R.id.siteDaAcademia);
        notaAcademia = findViewById(R.id.notaAcademia);

        comoChegar = findViewById(R.id.comoChegarAcademia);
        comoChegar.setOnClickListener(buttonClickListener);

        nomeDaAcademia.setText(CustomAdapter.ACADEMIA_CIDADE.getNome() + "\n"
                + CustomAdapter.ACADEMIA_CIDADE.getCidade());
        Picasso.get().load(CustomAdapter.ACADEMIA_CIDADE.getThumb())
                .resize(100, 100).centerCrop().into(imageView);
        buscarAcademia();
    }

    private void buscarAcademia() {
        try {
            HTTPService service = new HTTPService();
            DetalheAcademia detalheAcademia = service
                    .buscarAcademia(CustomAdapter.ACADEMIA_CIDADE.getId());
            ENDERECO_ACADEMIA = detalheAcademia.getEndereco();
            enderecoAcademia.setText(ENDERECO_ACADEMIA);
            telefoneAcademia.setText(detalheAcademia.getTelefone());
            tipoAcademia.setText(detalheAcademia.getTipoAcademia());
            siteAcademia.setText(detalheAcademia.getSite());
            notaAcademia.setRating(detalheAcademia.getNota());
        } catch (Exception e) {

        }
    }

    private View.OnClickListener buttonClickListener = v -> {
        switch (v.getId()) {
            case R.id.comoChegarAcademia:
                Intent intent = new Intent(this, ComoChegar.class);
                startActivity(intent);
                break;
            case View.NO_ID:
            default:
                Log.i("erro", "nada");
                break;
        }
    };

}

package br.com.micheladrianomedeiros.ondetreinar;

import android.content.Intent;

import android.os.Bundle;

import android.util.Log;

import android.view.View;

import android.widget.Button;

import android.widget.ImageView;

import android.widget.RatingBar;

import android.widget.TextView;

import androidx.appcompat.app.AppCompatActivity;

import com.squareup.picasso.Picasso;

import br.com.micheladrianomedeiros.ondetreinar.adapters.CustomAdapter;

import br.com.micheladrianomedeiros.ondetreinar.mapa.ComoChegar;

import br.com.micheladrianomedeiros.ondetreinar.model.DetalheAcademia;

import br.com.micheladrianomedeiros.ondetreinar.remote.HTTPService;

public class DetalheActivity extends AppCompatActivity {

private TextView nomeDaAcademia, enderecoAcademia, telefoneAcademia, tipoAcademia, siteAcademia;

private ImageView imageView;

private RatingBar notaAcademia;

private Button comoChegar;

public static String ENDERECO_ACADEMIA = null;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_detalhe);

nomeDaAcademia = findViewById(R.id.nomeDaAcademia);

imageView = findViewById(R.id.imagemDaAcademia);

enderecoAcademia = findViewById(R.id.enderecoAcademia);

telefoneAcademia = findViewById(R.id.telefoneAcademia);

tipoAcademia = findViewById(R.id.tipoDeAcademia);

siteAcademia = findViewById(R.id.siteDaAcademia);

notaAcademia = findViewById(R.id.notaAcademia);

comoChegar = findViewById(R.id.comoChegarAcademia);

comoChegar.setOnClickListener(buttonClickListener);

nomeDaAcademia.setText(CustomAdapter.ACADEMIA_CIDADE.getNome() + "\n"

+ CustomAdapter.ACADEMIA_CIDADE.getCidade());

Picasso.get().load(CustomAdapter.ACADEMIA_CIDADE.getThumb())

.resize(100, 100).centerCrop().into(imageView);

buscarAcademia();

}

private void buscarAcademia() {

try {

HTTPService service = new HTTPService();

DetalheAcademia detalheAcademia = service

.buscarAcademia(CustomAdapter.ACADEMIA_CIDADE.getId());

ENDERECO_ACADEMIA = detalheAcademia.getEndereco();

enderecoAcademia.setText(ENDERECO_ACADEMIA);

telefoneAcademia.setText(detalheAcademia.getTelefone());

tipoAcademia.setText(detalheAcademia.getTipoAcademia());

siteAcademia.setText(detalheAcademia.getSite());

notaAcademia.setRating(detalheAcademia.getNota());

} catch (Exception e) {

}

private View.OnClickListener buttonClickListener = v -> {

switch (v.getId()) {

case R.id.comoChegarAcademia:

Intent intent = new Intent(this, ComoChegar.class);

startActivity(intent);

break;

case View.NO_ID:

default:

Log.i("erro", "nada");

break;

}

};

}

DirectionParser.java

Esse arquivo coloquei na pasta tools.

package br.com.micheladrianomedeiros.ondetreinar.tools;

import com.google.android.gms.maps.model.LatLng;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

public class DirectionParser {
    /**
     * Receives a JSONObject and returns a list of lists containing latitude and longitude
     */
    public List<List<HashMap<String, String>>> parse(JSONObject jObject) {

        List<List<HashMap<String, String>>> routes = new ArrayList<List<HashMap<String, String>>>();
        JSONArray jRoutes = null;
        JSONArray jLegs = null;
        JSONArray jSteps = null;

        try {

            jRoutes = jObject.getJSONArray("routes");

            /** Traversing all routes */
            for (int i = 0; i < jRoutes.length(); i++) {
                jLegs = ((JSONObject) jRoutes.get(i)).getJSONArray("legs");
                List path = new ArrayList<HashMap<String, String>>();

                /** Traversing all legs */
                for (int j = 0; j < jLegs.length(); j++) {
                    jSteps = ((JSONObject) jLegs.get(j)).getJSONArray("steps");

                    /** Traversing all steps */
                    for (int k = 0; k < jSteps.length(); k++) {
                        String polyline = "";
                        polyline = (String) ((JSONObject) ((JSONObject) jSteps.get(k)).get("polyline")).get("points");
                        List<LatLng> list = decodePoly(polyline);

                        /** Traversing all points */
                        for (int l = 0; l < list.size(); l++) {
                            HashMap<String, String> hm = new HashMap<String, String>();
                            hm.put("lat", Double.toString(((LatLng) list.get(l)).latitude));
                            hm.put("lng", Double.toString(((LatLng) list.get(l)).longitude));
                            path.add(hm);
                        }
                    }
                    routes.add(path);
                }
            }

        } catch (JSONException e) {
            e.printStackTrace();
        } catch (Exception e) {
        }
        return routes;
    }


    private List<LatLng> decodePoly(String encoded) {

        List<LatLng> poly = new ArrayList<LatLng>();
        int index = 0, len = encoded.length();
        int lat = 0, lng = 0;

        while (index < len) {
            int b, shift = 0, result = 0;
            do {
                b = encoded.charAt(index++) - 63;
                result |= (b & 0x1f) << shift;
                shift += 5;
            } while (b >= 0x20);
            int dlat = ((result & 1) != 0 ? ~(result >> 1) : (result >> 1));
            lat += dlat;

            shift = 0;
            result = 0;
            do {
                b = encoded.charAt(index++) - 63;
                result |= (b & 0x1f) << shift;
                shift += 5;
            } while (b >= 0x20);
            int dlng = ((result & 1) != 0 ? ~(result >> 1) : (result >> 1));
            lng += dlng;

            LatLng p = new LatLng((((double) lat / 1E5)),
                    (((double) lng / 1E5)));
            poly.add(p);
        }
        return poly;
    }
}

package br.com.micheladrianomedeiros.ondetreinar.tools;

import com.google.android.gms.maps.model.LatLng;

import org.json.JSONArray;

import org.json.JSONException;

import org.json.JSONObject;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

public class DirectionParser {

/**

* Receives a JSONObject and returns a list of lists containing latitude and longitude

public List<List<HashMap<String, String>>> parse(JSONObject jObject) {

List<List<HashMap<String, String>>> routes = new ArrayList<List<HashMap<String, String>>>();

JSONArray jRoutes = null;

JSONArray jLegs = null;

JSONArray jSteps = null;

try {

jRoutes = jObject.getJSONArray("routes");

/** Traversing all routes */

for (int i = 0; i < jRoutes.length(); i++) {

jLegs = ((JSONObject) jRoutes.get(i)).getJSONArray("legs");

List path = new ArrayList<HashMap<String, String>>();

/** Traversing all legs */

for (int j = 0; j < jLegs.length(); j++) {

jSteps = ((JSONObject) jLegs.get(j)).getJSONArray("steps");

/** Traversing all steps */

for (int k = 0; k < jSteps.length(); k++) {

String polyline = "";

polyline = (String) ((JSONObject) ((JSONObject) jSteps.get(k)).get("polyline")).get("points");

List<LatLng> list = decodePoly(polyline);

/** Traversing all points */

for (int l = 0; l < list.size(); l++) {

HashMap<String, String> hm = new HashMap<String, String>();

hm.put("lat", Double.toString(((LatLng) list.get(l)).latitude));

hm.put("lng", Double.toString(((LatLng) list.get(l)).longitude));

path.add(hm);

}

routes.add(path);

}

} catch (JSONException e) {

e.printStackTrace();

} catch (Exception e) {

}

return routes;

}

private List<LatLng> decodePoly(String encoded) {

List<LatLng> poly = new ArrayList<LatLng>();

int index = 0, len = encoded.length();

int lat = 0, lng = 0;

while (index < len) {

int b, shift = 0, result = 0;

do {

b = encoded.charAt(index++) - 63;

result |= (b & 0x1f) << shift;

shift += 5;

} while (b >= 0x20);

int dlat = ((result & 1) != 0 ? ~(result >> 1) : (result >> 1));

lat += dlat;

shift = 0;

result = 0;

do {

b = encoded.charAt(index++) - 63;

result |= (b & 0x1f) << shift;

shift += 5;

} while (b >= 0x20);

int dlng = ((result & 1) != 0 ? ~(result >> 1) : (result >> 1));

lng += dlng;

LatLng p = new LatLng((((double) lat / 1E5)),

(((double) lng / 1E5)));

poly.add(p);

}

return poly;

}

ComoChegar.java

Esse arquivo é o que vai manipular os dados para criar a rota, eu criei uma pasta chamada mapa e coloquei esse arquivo lá.

package br.com.micheladrianomedeiros.ondetreinar.mapa;

import androidx.core.app.ActivityCompat;
import androidx.fragment.app.FragmentActivity;

import android.Manifest;
import android.content.Context;
import android.content.pm.PackageManager;
import android.graphics.Color;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.widget.Toast;

import com.google.android.gms.location.FusedLocationProviderClient;
import com.google.android.gms.location.LocationServices;
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;
import com.google.android.gms.maps.model.PolylineOptions;
import com.google.android.gms.tasks.Task;

import org.json.JSONException;
import org.json.JSONObject;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

import br.com.micheladrianomedeiros.ondetreinar.DetalheActivity;
import br.com.micheladrianomedeiros.ondetreinar.R;
import br.com.micheladrianomedeiros.ondetreinar.tools.DirectionParser;


public class ComoChegar extends FragmentActivity implements OnMapReadyCallback {

    private GoogleMap mMap;
    private LatLng mOrigin;

    Location currentLocation;
    FusedLocationProviderClient fusedLocationProviderClient;
    private static final int REQUEST_CODE = 101;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_como_chegar);
        fusedLocationProviderClient = LocationServices.getFusedLocationProviderClient(this);
        fetchLocation();
    }

    private void fetchLocation() {
        if (ActivityCompat.checkSelfPermission(
                this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(
                this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, REQUEST_CODE);
            return;
        }
        Task<Location> task = fusedLocationProviderClient.getLastLocation();
        task.addOnSuccessListener(location -> {
            if (location != null) {
                currentLocation = location;

                SupportMapFragment supportMapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
                assert supportMapFragment != null;
                supportMapFragment.getMapAsync(ComoChegar.this);

                mOrigin = new LatLng(currentLocation.getLatitude(), currentLocation.getLongitude());
            }
        });
    }

    /**
     * This method will manipulate the Google Map on the main screen
     */
    @Override
    public void onMapReady(GoogleMap googleMap) {
        //Google map setup
        mMap = googleMap;
        mMap.getUiSettings().setZoomControlsEnabled(true);
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, 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;
        }
        mMap.setMyLocationEnabled(true);
        mMap.getUiSettings().setMyLocationButtonEnabled(true);

        // Show marker on the screen and adjust the zoom level
        mMap.addMarker(new MarkerOptions().position(mOrigin).title("EU"));
        mMap.addMarker(new MarkerOptions().position(getLocationFromAddress(this)).title("DESTINO"));
        mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(mOrigin,15));
        new TaskDirectionRequest().execute(buildRequestUrl(mOrigin));
    }

    /**
     * Create requested url for Direction API to get routes from origin to destination
     *
     * @param origin
     * @return
     */
    private String buildRequestUrl(LatLng origin) {
        String strOrigin = "origin=" + origin.latitude + "," + origin.longitude;
        String strDestination = "destination="+ DetalheActivity.ENDERECO_ACADEMIA;
        String sensor = "sensor=false";
        String mode = "mode=driving";

        String param = strOrigin + "&" + strDestination + "&" + sensor + "&" + mode;
        String output = "json";
        String APIKEY = getResources().getString(R.string.google_maps_key);

        String url = "https://maps.googleapis.com/maps/api/directions/" + output + "?" + param + "&key="+APIKEY;
        Log.d("TAG", url);
        return url;
    }

    /**
     * Request direction from Google Direction API
     *
     *
     * @return JSON data routes/direction
     */
    private String requestDirection(String requestedUrl) {
        String responseString = "";
        InputStream inputStream = null;
        HttpURLConnection httpURLConnection = null;
        try {
            URL url = new URL(requestedUrl);
            httpURLConnection = (HttpURLConnection) url.openConnection();
            httpURLConnection.connect();

            inputStream = httpURLConnection.getInputStream();
            InputStreamReader reader = new InputStreamReader(inputStream);
            BufferedReader bufferedReader = new BufferedReader(reader);

            StringBuffer stringBuffer = new StringBuffer();
            String line = "";
            while ((line = bufferedReader.readLine()) != null) {
                stringBuffer.append(line);
            }
            responseString = stringBuffer.toString();
            bufferedReader.close();
            reader.close();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (inputStream != null) {
                try {
                    inputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        httpURLConnection.disconnect();
        return responseString;
    }

    //Get JSON data from Google Direction
    public class TaskDirectionRequest extends AsyncTask<String, Void, String> {
        @Override
        protected String doInBackground(String... strings) {
            String responseString = "";
            try {
                responseString = requestDirection(strings[0]);
            } catch (Exception e) {
                e.printStackTrace();
            }
            return responseString;
        }

        @Override
        protected void onPostExecute(String responseString) {
            super.onPostExecute(responseString);
            //Json object parsing
            TaskParseDirection parseResult = new TaskParseDirection();
            parseResult.execute(responseString);
        }
    }


    //Parse JSON Object from Google Direction API & display it on Map
    public class TaskParseDirection extends AsyncTask<String, Void, List<List<HashMap<String, String>>>> {
        @Override
        protected List<List<HashMap<String, String>>> doInBackground(String... jsonString) {
            List<List<HashMap<String, String>>> routes = null;
            JSONObject jsonObject = null;

            try {
                jsonObject = new JSONObject(jsonString[0]);
                DirectionParser parser = new DirectionParser();
                routes = parser.parse(jsonObject);
            } catch (JSONException e) {
                e.printStackTrace();
            }
            return routes;
        }

        @Override
        protected void onPostExecute(List<List<HashMap<String, String>>> lists) {
            super.onPostExecute(lists);
            ArrayList points = null;
            PolylineOptions polylineOptions = null;

            for (List<HashMap<String, String>> path : lists) {
                points = new ArrayList();
                polylineOptions = new PolylineOptions();

                for (HashMap<String, String> point : path) {
                    double lat = Double.parseDouble(point.get("lat"));
                    double lon = Double.parseDouble(point.get("lng"));

                    points.add(new LatLng(lat, lon));
                }
                polylineOptions.addAll(points);
                polylineOptions.width(15f);
                polylineOptions.color(Color.BLUE);
                polylineOptions.geodesic(true);
            }
            if (polylineOptions != null) {
                mMap.addPolyline(polylineOptions);
            } else {
                Toast.makeText(getApplicationContext(), "Direction not found", Toast.LENGTH_LONG).show();
            }
        }
    }

    public LatLng getLocationFromAddress(Context context) {

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

        try {
            // May throw an IOException
            address = coder.getFromLocationName(DetalheActivity.ENDERECO_ACADEMIA, 5);
            if (address == null) {
                return null;
            }

            Address location = address.get(0);
            p1 = new LatLng(location.getLatitude(), location.getLongitude() );

        } catch (IOException ex) {

            ex.printStackTrace();
        }

        return p1;
    }

}

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package br.com.micheladrianomedeiros.ondetreinar.mapa;

import androidx.core.app.ActivityCompat;

import androidx.fragment.app.FragmentActivity;

import android.Manifest;

import android.content.Context;

import android.content.pm.PackageManager;

import android.graphics.Color;

import android.location.Address;

import android.location.Geocoder;

import android.location.Location;

import android.os.AsyncTask;

import android.os.Bundle;

import android.util.Log;

import android.widget.Toast;

import com.google.android.gms.location.FusedLocationProviderClient;

import com.google.android.gms.location.LocationServices;

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;

import com.google.android.gms.maps.model.PolylineOptions;

import com.google.android.gms.tasks.Task;

import org.json.JSONException;

import org.json.JSONObject;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.net.HttpURLConnection;

import java.net.URL;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import br.com.micheladrianomedeiros.ondetreinar.DetalheActivity;

import br.com.micheladrianomedeiros.ondetreinar.R;

import br.com.micheladrianomedeiros.ondetreinar.tools.DirectionParser;

public class ComoChegar extends FragmentActivity implements OnMapReadyCallback {

private GoogleMap mMap;

private LatLng mOrigin;

Location currentLocation;

FusedLocationProviderClient fusedLocationProviderClient;

private static final int REQUEST_CODE = 101;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_como_chegar);

fusedLocationProviderClient = LocationServices.getFusedLocationProviderClient(this);

fetchLocation();

}

private void fetchLocation() {

if (ActivityCompat.checkSelfPermission(

this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(

this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {

ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, REQUEST_CODE);

return;

}

Task<Location> task = fusedLocationProviderClient.getLastLocation();

task.addOnSuccessListener(location -> {

if (location != null) {

currentLocation = location;

SupportMapFragment supportMapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);

assert supportMapFragment != null;

supportMapFragment.getMapAsync(ComoChegar.this);

mOrigin = new LatLng(currentLocation.getLatitude(), currentLocation.getLongitude());

}

});

}

/**

* This method will manipulate the Google Map on the main screen

@Override

public void onMapReady(GoogleMap googleMap) {

//Google map setup

mMap = googleMap;

mMap.getUiSettings().setZoomControlsEnabled(true);

if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, 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;

}

mMap.setMyLocationEnabled(true);

mMap.getUiSettings().setMyLocationButtonEnabled(true);

// Show marker on the screen and adjust the zoom level

mMap.addMarker(new MarkerOptions().position(mOrigin).title("EU"));

mMap.addMarker(new MarkerOptions().position(getLocationFromAddress(this)).title("DESTINO"));

mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(mOrigin,15));

new TaskDirectionRequest().execute(buildRequestUrl(mOrigin));

}

/**

* Create requested url for Direction API to get routes from origin to destination

* @param origin

* @return

private String buildRequestUrl(LatLng origin) {

String strOrigin = "origin=" + origin.latitude + "," + origin.longitude;

String strDestination = "destination="+ DetalheActivity.ENDERECO_ACADEMIA;

String sensor = "sensor=false";

String mode = "mode=driving";

String param = strOrigin + "&" + strDestination + "&" + sensor + "&" + mode;

String output = "json";

String APIKEY = getResources().getString(R.string.google_maps_key);

String url = "https://maps.googleapis.com/maps/api/directions/" + output + "?" + param + "&key="+APIKEY;

Log.d("TAG", url);

return url;

}

/**

* Request direction from Google Direction API

* @return JSON data routes/direction

private String requestDirection(String requestedUrl) {

String responseString = "";

InputStream inputStream = null;

HttpURLConnection httpURLConnection = null;

try {

URL url = new URL(requestedUrl);

httpURLConnection = (HttpURLConnection) url.openConnection();

httpURLConnection.connect();

inputStream = httpURLConnection.getInputStream();

InputStreamReader reader = new InputStreamReader(inputStream);

BufferedReader bufferedReader = new BufferedReader(reader);

StringBuffer stringBuffer = new StringBuffer();

String line = "";

while ((line = bufferedReader.readLine()) != null) {

stringBuffer.append(line);

}

responseString = stringBuffer.toString();

bufferedReader.close();

reader.close();

} catch (Exception e) {

e.printStackTrace();

} finally {

if (inputStream != null) {

try {

inputStream.close();

} catch (IOException e) {

e.printStackTrace();

}

httpURLConnection.disconnect();

return responseString;

}

//Get JSON data from Google Direction

public class TaskDirectionRequest extends AsyncTask<String, Void, String> {

@Override

protected String doInBackground(String... strings) {

String responseString = "";

try {

responseString = requestDirection(strings[0]);

} catch (Exception e) {

e.printStackTrace();

}

return responseString;

}

@Override

protected void onPostExecute(String responseString) {

super.onPostExecute(responseString);

//Json object parsing

TaskParseDirection parseResult = new TaskParseDirection();

parseResult.execute(responseString);

}

//Parse JSON Object from Google Direction API & display it on Map

public class TaskParseDirection extends AsyncTask<String, Void, List<List<HashMap<String, String>>>> {

@Override

protected List<List<HashMap<String, String>>> doInBackground(String... jsonString) {

List<List<HashMap<String, String>>> routes = null;

JSONObject jsonObject = null;

try {

jsonObject = new JSONObject(jsonString[0]);

DirectionParser parser = new DirectionParser();

routes = parser.parse(jsonObject);

} catch (JSONException e) {

e.printStackTrace();

}

return routes;

}

@Override

protected void onPostExecute(List<List<HashMap<String, String>>> lists) {

super.onPostExecute(lists);

ArrayList points = null;

PolylineOptions polylineOptions = null;

for (List<HashMap<String, String>> path : lists) {

points = new ArrayList();

polylineOptions = new PolylineOptions();

for (HashMap<String, String> point : path) {

double lat = Double.parseDouble(point.get("lat"));

double lon = Double.parseDouble(point.get("lng"));

points.add(new LatLng(lat, lon));

}

polylineOptions.addAll(points);

polylineOptions.width(15f);

polylineOptions.color(Color.BLUE);

polylineOptions.geodesic(true);

}

if (polylineOptions != null) {

mMap.addPolyline(polylineOptions);

} else {

Toast.makeText(getApplicationContext(), "Direction not found", Toast.LENGTH_LONG).show();

}

public LatLng getLocationFromAddress(Context context) {

Geocoder coder = new Geocoder(context);

List<Address> address;

LatLng p1 = null;

try {

// May throw an IOException

address = coder.getFromLocationName(DetalheActivity.ENDERECO_ACADEMIA, 5);

if (address == null) {

return null;

}

Address location = address.get(0);

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

} catch (IOException ex) {

ex.printStackTrace();

}

return p1;

}

Fonte:

https://c1ctech.com/android-googlemap-example-to-draw-route-between-two-locations/

https://www.journaldev.com/13373/android-google-map-drawing-route-two-points

https://www.tutorialspoint.com/how-to-show-current-location-on-a-google-map-on-android

https://medium.com/@andrea8787/android-example-draw-route-between-two-location-using-google-direction-7e7610f5e7f2
https://stackoverflow.com/questions/3574644/how-can-i-find-the-latitude-and-longitude-from-address

build.gradle

activity_como_chegar.xml

AndroidManifest.xml

DetalheActivity.java

DirectionParser.java

ComoChegar.java

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build.gradle

activity_como_chegar.xml

AndroidManifest.xml

DetalheActivity.java

DirectionParser.java

ComoChegar.java

GIT e GITHUB desde do Zero para Principiantes

Aprendendo Java Para Certificação #4

React Native Para Desenvolvimento Mobile #3

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