Java 映射返回Null或空的Android Studio
我是android编程新手，需要制作一个GPS应用程序，我创建了一个带有图形界面的小应用程序进行测试，但我没有处理地图，结果返回空值，我无法解决这个问题。当我认为密码有问题时，我会留下密码。谢谢Java 映射返回Null或空的Android Studio,java,android,null,gps,return,Java,Android,Null,Gps,Return,我是android编程新手，需要制作一个GPS应用程序，我创建了一个带有图形界面的小应用程序进行测试，但我没有处理地图，结果返回空值，我无法解决这个问题。当我认为密码有问题时，我会留下密码。谢谢 <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="co.quindio.sena.ejempl
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="co.quindio.sena.ejemplomaparutas">
<!--
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" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity
android:name=".MainActivity"
android:label="@string/app_name"
android:theme="@style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<!--
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" />
<activity
android:name=".MapsActivity"
android:label="@string/title_activity_maps"></activity>
</application>
</manifest>
这是一个错误]
package co.quindio.sena.ejemplomaparutas;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.Bundle;
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.Log;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.EditText;
import android.widget.Toast;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.JsonObjectRequest;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;
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 MainActivity extends AppCompatActivity {
EditText txtLatInicio,txtLongInicio,txtLatFinal,txtLongFinal;
JsonObjectRequest jsonObjectRequest;
RequestQueue request;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
txtLatInicio= (EditText) findViewById(R.id.txtLatIni);
txtLongInicio= (EditText) findViewById(R.id.txtLongIni);
txtLatFinal= (EditText) findViewById(R.id.txtLatFin);
txtLongFinal= (EditText) findViewById(R.id.txtLongFin);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Utilidades.coordenadas.setLatitudInicial(Double.valueOf(txtLatInicio.getText().toString()));
Utilidades.coordenadas.setLongitudInicial(Double.valueOf(txtLongInicio.getText().toString()));
Utilidades.coordenadas.setLatitudFinal(Double.valueOf(txtLatFinal.getText().toString()));
Utilidades.coordenadas.setLongitudFinal(Double.valueOf(txtLongFinal.getText().toString()));
webServiceObtenerRuta(txtLatInicio.getText().toString(),txtLongInicio.getText().toString(),
txtLatFinal.getText().toString(),txtLongFinal.getText().toString());
Intent miIntent=new Intent(MainActivity.this, MapsActivity.class);
startActivity(miIntent);
}
});
request= Volley.newRequestQueue(getApplicationContext());
}
private void webServiceObtenerRuta(String latitudInicial, String longitudInicial, String latitudFinal, String longitudFinal) {
String url="https://maps.googleapis.com/maps/api/directions/json?origin="+latitudInicial+","+longitudInicial
+"&destination="+latitudFinal+","+longitudFinal;
jsonObjectRequest=new JsonObjectRequest(Request.Method.GET, url, null, new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
//Este método PARSEA el JSONObject que retorna del API de Rutas de Google devolviendo
//una lista del lista de HashMap Strings con el listado de Coordenadas de Lat y Long,
//con la cual se podrá dibujar pollinas que describan la ruta entre 2 puntos.
JSONArray jRoutes = null;
JSONArray jLegs = null;
JSONArray jSteps = null;
try {
jRoutes = response.getJSONArray("routes");
/** Traversing all routes */
for(int i=0;i<jRoutes.length();i++){
jLegs = ( (JSONObject)jRoutes.get(i)).getJSONArray("legs");
List<HashMap<String, String>> 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);
}
}
Utilidades.routes.add(path);
}
}
} catch (JSONException e) {
e.printStackTrace();
}catch (Exception e){
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(getApplicationContext(), "No se puede conectar "+error.toString(), Toast.LENGTH_LONG).show();
System.out.println();
Log.d("ERROR: ", error.toString());
}
}
);
request.add(jsonObjectRequest);
}
public List<List<HashMap<String,String>>> parse(JSONObject jObject){
//Este método PARSEA el JSONObject que retorna del API de Rutas de Google devolviendo
//una lista del lista de HashMap Strings con el listado de Coordenadas de Lat y Long,
//con la cual se podrá dibujar pollinas que describan la ruta entre 2 puntos.
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<HashMap<String, String>> 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);
}
}
Utilidades.routes.add(path);
}
}
} catch (JSONException e) {
e.printStackTrace();
}catch (Exception e){
}
return Utilidades.routes;
}
public void onClick(View view) {
if (view.getId()==R.id.btnObtenerCoordenadas){
// txtLatInicio.setText("4.543986"); txtLongInicio.setText("-75.666736");
txtLatInicio.setText("-34.616516"); txtLongInicio.setText("-58.555252");
//Unicentro
//txtLatFinal.setText("4.540026"); txtLongFinal.setText("-75.665479");
txtLatFinal.setText("-34.604833"); txtLongFinal.setText("-58.564333");
//Parque del café
// txtLatFinal.setText("4.541396"); txtLongFinal.setText("-75.771741");
}
}
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;
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
package co.quindio.sena.ejemplomaparutas;
/**
* Created by CHENAO on 29/07/2018.
*/
public class Punto {
private Double latitudInicial;
private Double longitudInicial;
private Double latitudFinal;
private Double longitudFinal;
public Double getLatitudInicial() {
return latitudInicial;
}
public void setLatitudInicial(Double latitudInicial) {
this.latitudInicial = latitudInicial;
}
public Double getLongitudInicial() {
return longitudInicial;
}
public void setLongitudInicial(Double longitudInicial) {
this.longitudInicial = longitudInicial;
}
public Double getLatitudFinal() {
return latitudFinal;
}
public void setLatitudFinal(Double latitudFinal) {
this.latitudFinal = latitudFinal;
}
public Double getLongitudFinal() {
return longitudFinal;
}
public void setLongitudFinal(Double longitudFinal) {
this.longitudFinal = longitudFinal;
}
}
package co.quindio.sena.ejemplomaparutas;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
/**
* Created by CHENAO on 25/08/2018.
*/
public class Utilidades {
public static List<List<HashMap<String, String>>> routes = new ArrayList<List<HashMap<String,String>>>();
public static Punto coordenadas=new Punto();
}
package co.quindio.sena.ejempomaparutas；
导入android.app.ProgressDialog；
导入android.content.Intent；
导入android.os.Bundle；
导入android.support.design.widget.FloatingActionButton；
导入android.support.design.widget.Snackbar；
导入android.support.v7.app.AppActivity；
导入android.support.v7.widget.Toolbar；
导入android.util.Log；
导入android.view.view；
导入android.view.Menu；
导入android.view.MenuItem；
导入android.widget.EditText；
导入android.widget.Toast；
导入com.android.volley.Request；
导入com.android.volley.RequestQueue；
导入com.android.volley.Response；
导入com.android.volley.VolleyError；
导入com.android.volley.toolbox.JsonObjectRequest；
导入com.android.volley.toolbox.StringRequest；
导入com.android.volley.toolbox.volley；
导入com.google.android.gms.maps.model.LatLng；
导入org.json.JSONArray；
导入org.json.JSONException；
导入org.json.JSONObject；
导入java.util.ArrayList；
导入java.util.HashMap；
导入java.util.List；
公共类MainActivity扩展了AppCompatActivity{
EditText txtlatinico、txtlongnicio、txtLatFinal、txtLongFinal；
JsonObjectRequest JsonObjectRequest；
请求队列请求；
@凌驾
创建时受保护的void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.activity_main）；
Toolbar Toolbar=（Toolbar）findViewById（R.id.Toolbar）；
设置支持操作栏（工具栏）；
txtLatInicio=（EditText）findViewById（R.id.txtLatIni）；
txtlongnicio=（EditText）findViewById（R.id.txtLongIni）；
txtLatFinal=（EditText）findViewById（R.id.txtLatFin）；
txtLongFinal=（EditText）findViewById（R.id.txtLongFin）；
FloatingActionButton fab=（FloatingActionButton）findViewById（R.id.fab）；
fab.setOnClickListener（新视图.OnClickListener（）{
@凌驾
公共void onClick（视图）{
Utilidades.coordenadas.setLatitudinical（Double.valueOf（txtlaticinio.getText（）.toString（））；
Utilidades.coordenadas.setLongitudinial（Double.valueOf（txtlongnicio.getText（）.toString（））；
Utilidades.coordenadas.setLatitudFinal（Double.valueOf（txtLatFinal.getText（）.toString（））；
setLongitudFinal（Double.valueOf（txtLongFinal.getText（）.toString（））；
webservicebtenerruta（txtlaticinio.getText（）.toString（），txtlonicio.getText（）.toString（），
txtLatFinal.getText（）.toString（），txtLongFinal.getText（）.toString（））；
Intent miIntent=新的Intent（MainActivity.this、MapsActivity.class）；
星触觉；
}
});
request=Volley.newRequestQueue（getApplicationContext（））；
}
私有void webservicebtenerruta（字符串latitudinical、字符串longitudincial、字符串latitudFinal、字符串longitudinfinal）{
字符串url=”https://maps.googleapis.com/maps/api/directions/json?origin=“+横向的+”，“+纵向的”
+“&destination=“+latitudFinal+”，“+longitudFinal；
jsonObjectRequest=newJSONObjectRequest（Request.Method.GET，url，null，new Response.Listener（））{
@凌驾
公共void onResponse（JSONObject响应）{
//Este método PARSEA el JSONObject是谷歌devolviendo的开发者
//在长距离的坐标系中，哈希映射字符串的列表，
//在波德拉迪布贾尔群岛附近，有两座平托山上的芦塔。
JSONArray jRoutes=null；
JSONArray jLegs=null；
JSONArray jSteps=null；
试一试{
jRoutes=response.getJSONArray（“路由”）；
/**穿越所有路线*/
对于（int i=0；i 1））；
液化天然气+=液化天然气；
LatLng p=新LatLng（（（双）lat/1E5）），
（（双）液化天然气/1E5））；
poly.add（p）；
}
返回多边形；
}
@凌驾
公共布尔onCreateOptions菜单（菜单）{
//为菜单充气；这会将项目添加到操作栏（如果存在）。
getMenuInflater（）.充气（右菜单菜单菜单主菜单）；
返回true；
}
@凌驾
公共布尔值onOptionsItemSelected（菜单项项）{
//处理操作栏项目单击此处。操作栏将
//自动处理Home/Up按钮上的点击，只要
//在AndroidManifest.xml中指定父活动时。
int id=item.getItemId（）；
//noinspection SimplifiableIf语句
if（id==R.id.action\u设置）{
返回true；
}
返回super.onOptionsItemSelected（项目）；
}
}
包装公司quindio.sena.EJEMPOMAPARUTAS；
/**
*CHENAO于2018年7月29日创建。
*/
公共班平托{
私人双自由；
私人双纵；
私人双人决赛；
私人双纵决赛；
公共双GetLatitudinical（）{
回归纬度；
}
公共空间设置相对论（双相对论）{
this.latitudinical=latitudinical；
}
公共双GetLongitudinical（）{
回归纵向；
}
公共空间设置纵向（双纵向）{
this.longitudinical=longitudinical；
}
公共双getLatitudFinal（）{
返回最终版本；
}
公共无效设置latitudFinal（双latitudFinal）{
this.latitudFinal=latitudFinal；
}
公共双getLongitudFinal（）{
回程
<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="co.quindio.sena.ejemplomaparutas.MapsActivity" />
package co.quindio.sena.ejemplomaparutas;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.Bundle;
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.Log;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.EditText;
import android.widget.Toast;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.JsonObjectRequest;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;
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 MainActivity extends AppCompatActivity {
EditText txtLatInicio,txtLongInicio,txtLatFinal,txtLongFinal;
JsonObjectRequest jsonObjectRequest;
RequestQueue request;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
txtLatInicio= (EditText) findViewById(R.id.txtLatIni);
txtLongInicio= (EditText) findViewById(R.id.txtLongIni);
txtLatFinal= (EditText) findViewById(R.id.txtLatFin);
txtLongFinal= (EditText) findViewById(R.id.txtLongFin);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Utilidades.coordenadas.setLatitudInicial(Double.valueOf(txtLatInicio.getText().toString()));
Utilidades.coordenadas.setLongitudInicial(Double.valueOf(txtLongInicio.getText().toString()));
Utilidades.coordenadas.setLatitudFinal(Double.valueOf(txtLatFinal.getText().toString()));
Utilidades.coordenadas.setLongitudFinal(Double.valueOf(txtLongFinal.getText().toString()));
webServiceObtenerRuta(txtLatInicio.getText().toString(),txtLongInicio.getText().toString(),
txtLatFinal.getText().toString(),txtLongFinal.getText().toString());
Intent miIntent=new Intent(MainActivity.this, MapsActivity.class);
startActivity(miIntent);
}
});
request= Volley.newRequestQueue(getApplicationContext());
}
private void webServiceObtenerRuta(String latitudInicial, String longitudInicial, String latitudFinal, String longitudFinal) {
String url="https://maps.googleapis.com/maps/api/directions/json?origin="+latitudInicial+","+longitudInicial
+"&destination="+latitudFinal+","+longitudFinal;
jsonObjectRequest=new JsonObjectRequest(Request.Method.GET, url, null, new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
//Este método PARSEA el JSONObject que retorna del API de Rutas de Google devolviendo
//una lista del lista de HashMap Strings con el listado de Coordenadas de Lat y Long,
//con la cual se podrá dibujar pollinas que describan la ruta entre 2 puntos.
JSONArray jRoutes = null;
JSONArray jLegs = null;
JSONArray jSteps = null;
try {
jRoutes = response.getJSONArray("routes");
/** Traversing all routes */
for(int i=0;i<jRoutes.length();i++){
jLegs = ( (JSONObject)jRoutes.get(i)).getJSONArray("legs");
List<HashMap<String, String>> 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);
}
}
Utilidades.routes.add(path);
}
}
} catch (JSONException e) {
e.printStackTrace();
}catch (Exception e){
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(getApplicationContext(), "No se puede conectar "+error.toString(), Toast.LENGTH_LONG).show();
System.out.println();
Log.d("ERROR: ", error.toString());
}
}
);
request.add(jsonObjectRequest);
}
public List<List<HashMap<String,String>>> parse(JSONObject jObject){
//Este método PARSEA el JSONObject que retorna del API de Rutas de Google devolviendo
//una lista del lista de HashMap Strings con el listado de Coordenadas de Lat y Long,
//con la cual se podrá dibujar pollinas que describan la ruta entre 2 puntos.
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<HashMap<String, String>> 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);
}
}
Utilidades.routes.add(path);
}
}
} catch (JSONException e) {
e.printStackTrace();
}catch (Exception e){
}
return Utilidades.routes;
}
public void onClick(View view) {
if (view.getId()==R.id.btnObtenerCoordenadas){
// txtLatInicio.setText("4.543986"); txtLongInicio.setText("-75.666736");
txtLatInicio.setText("-34.616516"); txtLongInicio.setText("-58.555252");
//Unicentro
//txtLatFinal.setText("4.540026"); txtLongFinal.setText("-75.665479");
txtLatFinal.setText("-34.604833"); txtLongFinal.setText("-58.564333");
//Parque del café
// txtLatFinal.setText("4.541396"); txtLongFinal.setText("-75.771741");
}
}
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;
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
package co.quindio.sena.ejemplomaparutas;
/**
* Created by CHENAO on 29/07/2018.
*/
public class Punto {
private Double latitudInicial;
private Double longitudInicial;
private Double latitudFinal;
private Double longitudFinal;
public Double getLatitudInicial() {
return latitudInicial;
}
public void setLatitudInicial(Double latitudInicial) {
this.latitudInicial = latitudInicial;
}
public Double getLongitudInicial() {
return longitudInicial;
}
public void setLongitudInicial(Double longitudInicial) {
this.longitudInicial = longitudInicial;
}
public Double getLatitudFinal() {
return latitudFinal;
}
public void setLatitudFinal(Double latitudFinal) {
this.latitudFinal = latitudFinal;
}
public Double getLongitudFinal() {
return longitudFinal;
}
public void setLongitudFinal(Double longitudFinal) {
this.longitudFinal = longitudFinal;
}
}
package co.quindio.sena.ejemplomaparutas;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
/**
* Created by CHENAO on 25/08/2018.
*/
public class Utilidades {
public static List<List<HashMap<String, String>>> routes = new ArrayList<List<HashMap<String,String>>>();
public static Punto coordenadas=new Punto();
}
<!--Did you get google map api key? If not then Follow this. get the google map api key and paste into "res/values/google_maps_api.xml"-->
<resources>
<!-- TODO: Before you run your application, you need a Google Maps API key.
See this page for more information:
https://developers.google.com/maps/documentation/android/start#get_an_android_certificate_and_the_google_maps_api_key
Once you have your key (it starts with "AIza"), replace the "google_maps_key"
string in this file.
Note: This resource is used for the debug build target. Update this file if you just want to run
the demo app.
-->
<string name="google_maps_key" translatable="false" templateMergeStrategy="preserve">
YOUR_KEY_HERE
</string>
//play services
implementation 'com.google.android.gms:play-services-maps:16.1.0'
implementation 'com.google.android.gms:play-services-location:16.0.0'