使用Android的Google Maps API查找路线 [英] Find route with Androids Google Maps API
本文介绍了使用Android的Google Maps API查找路线的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我希望能够使用Android的 Google Maps API 显示两个用户定义的地理点之间的路线。我还希望能够让用户选择要显示的路线类型，无论是步行，骑自行车，汽车等。另外，我希望能够计算使用此路线所需的时间和距离。我试过在网上搜索并查看其他stackoverflow问题，但无济于事。我将如何去做这件事？我将如何代码。
$ b // ----编辑---- //
我还想获得交通信息，如繁忙路线，拥堵等。
使用Wrapper库的Android Google Maps路由示例代码 使用Android Studio Gradle 使用Android Studio Gradle 条目： compile'com.github.jd-alexander：library：1.1.0'
MainActivity.java
import android.Manifest;
导入android.content.pm.PackageManager;
导入android.graphics.Color;
导入android.location.Location;
导入android.location.LocationListener;
导入android.location.LocationManager;
导入android.support.design.widget.FloatingActionButton;
导入android.support.design.widget.Snackbar;
导入android.support.v4.app.ActivityCompat;
导入android.support.v4.app.FragmentActivity;
导入android.os.Bundle;
导入android.view.View;
导入android.widget.TextView;
导入android.widget.Toast;
import com.directions.route.Route;
import com.directions.route.RouteException;
import com.directions.route.Routing;
import com.directions.route.RoutingListener;
import com.google.android.gms.maps.CameraUpdateFactory;
导入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.LatLngBounds;
导入com.google.android.gms.maps.model.Marker;
导入com.google.android.gms.maps.model.MarkerOptions;
import com.google.android.gms.maps.model.Polyline;
import com.google.android.gms.maps.model.PolylineOptions;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
公共类MainActivity扩展FragmentActivity实现OnMapReadyCallback，LocationListener，GoogleMap.OnMarkerClickListener，RoutingListener {
私有GoogleMap mMap = null;
私人LocationManager locationManager = null;
private FloatingActionButton fab = null;
private TextView txtDistance，txtTime;
//全局UI地图标记
私有标记currentMarker = null;
私有标记destMarker = null;
私人LatLng currentLatLng = null;
私人Polyline line = null;
//全局标志
private boolean firstRefresh = true;
@Override
protected void onCreate（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）;
setContentView（R.layout.activity_map）;
Constants.POINT_DEST = new LatLng（18.758663，73.382025）; //罗纳瓦拉目的地。
//在UI上加载地图片段
SupportMapFragment mapFragment =（SupportMapFragment）getSupportFragmentManager（）。findFragmentById（R.id.map）;
mapFragment.getMapAsync（this）;
txtDistance =（TextView）findViewById（R.id.txt_distance）;
txtTime =（TextView）findViewById（R.id.txt_time）;
fab =（FloatingActionButton）findViewById（R.id.fab）;
fab.setOnClickListener（new View.OnClickListener（）{
@Override
public void onClick（View v）{
MainActivity.this.getRoutingPath（）;
Snackbar .make（v，获取路由，Snackbar.LENGTH_SHORT）.show（）;
}
}）; （）;
}
@Override
保护无效onResume（）{
super.onResume（）;
firstRefresh = true;
//确保GPS已打开并为应用程序启用位置许可。
locationManager =（LocationManager）getSystemService（LOCATION_SERVICE）;
if（！PermissionCheck.getInstance（）。checkGPSPermission（this，locationManager））{
// GPS未为应用程序启用。
} else if（！PermissionCheck.getInstance（）。checkLocationPermission（this））{
//未给出位置权限。
} else {
Toast.makeText（MainActivity.this，Fetching Location，Toast.LENGTH_SHORT）.show（）;
尝试{
locationManager.requestLocationUpdates（LocationManager.GPS_PROVIDER，0，0，this）;
locationManager.requestLocationUpdates（LocationManager.NETWORK_PROVIDER，5000，0，this）;
} catch（Exception e）
{
Toast.makeText（MainActivity.this，ERROR：Can not start location listener，Toast.LENGTH_SHORT）.show（）;
}
$ b @Override
保护无效onPause（）{
if（locationManager！= null）{
// API级别为23.
if（ActivityCompat.checkSelfPermission（this，Manifest.permission.ACCESS_FINE_LOCATION）！= PackageManager.PERMISSION_GRANTED&& ActivityCompat.checkSelfPermission（this，Manifest .permission.ACCESS_COARSE_LOCATION）！= PackageManager.PERMISSION_GRANTED）{
}
尝试{
locationManager.removeUpdates（this）;
} catch（Exception e）{
}
}
locationManager = null;
super.onPause（）;
}
@Override
protected void onStop（）{
super.onStop（）;
}
@Override
public void onMapReady（GoogleMap googleMap）
{
mMap = googleMap;
//mMap.getUiSettings().setZoomControlsEnabled(true）;
mMap.getUiSettings（）。setCompassEnabled（true）;
mMap.getUiSettings（）。setAllGesturesEnabled（true）;
mMap.setOnMarkerClickListener（this）;
}
/ **
* @desc LocationListener接口实现的方法。
* /
@Override
public void onLocationChanged（Location location）
{
double lat = location.getLatitude（）;
double lng = location.getLongitude（）;
currentLatLng =新LatLng（lat，lng）;
if（firstRefresh）
{
//添加开始标记。
currentMarker = mMap.addMarker（new MarkerOptions（）。position（currentLatLng）.title（Current Position））; //。icon（BitmapDescriptorFactory.fromResource（R.drawable.location）））;
firstRefresh = false;
destMarker = mMap.addMarker（new MarkerOptions（）。position（Constants.POINT_DEST）.title（Destination））; //。icon（BitmapDescriptorFactory.fromResource（R.drawable.location）））;
mMap.moveCamera（CameraUpdateFactory.newLatLng（Constants.POINT_DEST））;
mMap.animateCamera（CameraUpdateFactory.zoomTo（15））;
getRoutingPath（）;
}
else
{
currentMarker.setPosition（currentLatLng）;
$ b @Override
public void onStatusChanged（String provider，int status，Bundle extras）{}
@Override
public void onProviderEnabled（String provider）{}
$ b $ @Override
public void onProviderDisabled（String provider）{}
/ **
* @desc MapMarker接口方法已实施。
* /
@Override
public boolean onMarkerClick（Marker marker）
{
if（marker.getTitle（）。contains（Destination） ）
{
//在dest引脚上执行一些任务单击
}
else if（marker.getTitle（）。contains（Current））
{
//在当前引脚上执行一些任务，单击
}
返回false;
}
/ **
* desc路由监听器接口方法的实现。
** /
@Override
public void onRoutingFailure（RouteException e）
{
Toast.makeText（MainActivity.this，Routing Failed，Toast.LENGTH_SHORT） 。显示（）;
$ b @Override
public void onRoutingStart（）{}
$ b @Override
public void onRoutingSuccess（ArrayList< Route> list， int i）
{
尝试
{
//获取所有点并绘制polyLine路线。
列表< LatLng> listPoints = list.get（0）.getPoints（）;
PolylineOptions options = new PolylineOptions（）。width（5）.color（Color.BLUE）.geodesic（true）;
Iterator< LatLng> iterator = listPoints.iterator（）;
while（iterator.hasNext（））
{
LatLng data = iterator.next（）;
options.add（data）;
}
//如果行不为空，则删除旧的多段线路由。
if（line！= null）
{
line.remove（）;
}
line = mMap.addPolyline（options）;
//显示距离和持续时间。
txtDistance.setText（Distance：+ list.get（0）.getDistanceText（））;
txtTime.setText（Duration：+ list.get（0）.getDurationText（））;
//关注地图边界
mMap.moveCamera（CameraUpdateFactory.newLatLng（list.get（0）.getLatLgnBounds（）。getCenter（）））;
LatLngBounds.Builder builder = new LatLngBounds.Builder（）;
builder.include（currentLatLng）;
builder.include（Constants.POINT_DEST）;
LatLngBounds bounds = builder.build（）;
mMap.animateCamera（CameraUpdateFactory.newLatLngBounds（bounds，50））;
}
catch（Exception e）
{
Toast.makeText（MainActivity.this，EXCEPTION：Can not parse routing response，Toast.LENGTH_SHORT）.show（）;
@Override
public void onRoutingCancelled（）
{
Toast.makeText（MainActivity.this，Routing Canceled ，Toast.LENGTH_SHORT）.show（）;
}
/ **
* @method getRoutingPath
* @desc绘制Google路由路径的方法。
* /
private void getRoutingPath（）
{
try
{
//路由
Routing routing = new Routing.Builder（ ）
.travelMode（Routing.TravelMode.DRIVING）
.withListener（this）
.waypoints（currentLatLng，Constants.POINT_DEST）
.build（）;
routing.execute（）;
catch（Exception e）
{
Toast.makeText（MainActivity.this，Unable to Route，Toast.LENGTH_SHORT）.show（）;
$ b Constants.java
/ **
* @class常量
* @desc在运行时保持值的常量类。
* /
公共类常量
{
//地图LatLong points
public static LatLng POINT_DEST = null;
activity_map.xml p>
< android.support.design.widget.CoordinatorLayout
xmlns：android =http://schemas.android。 com / apk / res / android
xmlns：app =http://schemas.android.com/apk/res-auto
xmlns：map =http://schemas.android。 com / apk / res-auto
xmlns：tools =http://schemas.android.com/tools
android：layout_width =match_parent
android： layout_height = match_parent >
< LinearLayout android：layout_width =match_parent
android：layout_height =match_parent
android：orientation =vertical>
< LinearLayout
android：id =@ + id / viewA
android：layout_width =match_parent
android：layout_height =match_parent
android：layout_weight =0.1
android：orientation =horizontal>
< fragment
android：id =@ + id / map
android：name =com.google.android.gms.maps.SupportMapFragment
android：layout_width =match_parent
android：layout_height =match_parent
tools：context =com.packagename.MainActivity/>
< / LinearLayout>
< LinearLayout
android：id =@ + id / viewB
android：layout_width =match_parent
android：layout_height =match_parent
android：layout_weight =0.9
android：gravity =center | left
android：paddingLeft =20dp
android：background =＃FFFFFF
android ：orientation =vertical>
TextView
android：layout_width =wrap_content
android：layout_height =wrap_content
android：textSize =16dp
android：文字=距离？
android：paddingTop =3dp
android：paddingLeft =3dp
android：paddingBottom =3dp
android：id =@ + id / txt_distance/> ;
TextView
android：layout_width =wrap_content
android：layout_height =wrap_content
android：textSize =17dp
android： paddingLeft =3dp
android：text =持续时间？
android：id =@ + id / txt_time/>
< / LinearLayout>
< / LinearLayout>
< android.support.design.widget.FloatingActionButton
android：id =@ + id / fab
android：layout_width =wrap_content
android ：layout_height =wrap_content
android：layout_margin =16dp
android：clickable =true
android：src =@ android：drawable / ic_dialog_map
app： layout_anchor =@ id / viewA
app：layout_anchorGravity =bottom | right | end/>
I want to be able to display the route between two user-defined geographical points using the Google Maps API for Android. I also want to be able to let the user choose what type of route to display, whether it be walking, cycling, car etc. Additionally, I want to be able to calculate the time and distance it would take to use this route. I've tried searching the web and looking at other stackoverflow questions, but to no avail. How would I go about this? How would I be able to code this.
//----EDIT----//
I would also like to get traffic information such as busy routes, congestion, etc.
解决方案 Android Google Maps Routing example code using Wrapper library
Use Android Studio Gradle entry:
compile 'com.github.jd-alexander:library:1.1.0'
MainActivity.java
import android.Manifest;
import android.content.pm.PackageManager;
import android.graphics.Color;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v4.app.ActivityCompat;
import android.support.v4.app.FragmentActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;
import com.directions.route.Route;
import com.directions.route.RouteException;
import com.directions.route.Routing;
import com.directions.route.RoutingListener;
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.LatLngBounds;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;
import com.google.android.gms.maps.model.Polyline;
import com.google.android.gms.maps.model.PolylineOptions;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
public class MainActivity extends FragmentActivity implements OnMapReadyCallback, LocationListener, GoogleMap.OnMarkerClickListener, RoutingListener {
private GoogleMap mMap = null;
private LocationManager locationManager = null;
private FloatingActionButton fab = null;
private TextView txtDistance, txtTime;
//Global UI Map markers
private Marker currentMarker = null;
private Marker destMarker = null;
private LatLng currentLatLng = null;
private Polyline line = null;
//Global flags
private boolean firstRefresh = true;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_map);
Constants.POINT_DEST = new LatLng(18.758663, 73.382025); //Lonavala destination.
//Load the map fragment on UI
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
txtDistance = (TextView)findViewById(R.id.txt_distance);
txtTime = (TextView)findViewById(R.id.txt_time);
fab = (FloatingActionButton)findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
MainActivity.this.getRoutingPath();
Snackbar.make(v, "Fetching Route", Snackbar.LENGTH_SHORT).show();
}
});
}
@Override
protected void onResume() {
super.onResume();
firstRefresh = true;
//Ensure the GPS is ON and location permission enabled for the application.
locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
if (!PermissionCheck.getInstance().checkGPSPermission(this, locationManager)) {
//GPS not enabled for the application.
} else if (!PermissionCheck.getInstance().checkLocationPermission(this)) {
//Location permission not given.
} else {
Toast.makeText(MainActivity.this, "Fetching Location", Toast.LENGTH_SHORT).show();
try {
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, this);
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 5000, 0, this);
} catch(Exception e)
{
Toast.makeText(MainActivity.this, "ERROR: Cannot start location listener", Toast.LENGTH_SHORT).show();
}
}
}
@Override
protected void onPause() {
if (locationManager != null) {
//Check needed in case of API level 23.
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
}
try {
locationManager.removeUpdates(this);
} catch (Exception e) {
}
}
locationManager = null;
super.onPause();
}
@Override
protected void onStop() {
super.onStop();
}
@Override
public void onMapReady(GoogleMap googleMap)
{
mMap = googleMap;
//mMap.getUiSettings().setZoomControlsEnabled(true);
mMap.getUiSettings().setCompassEnabled(true);
mMap.getUiSettings().setAllGesturesEnabled(true);
mMap.setOnMarkerClickListener(this);
}
/**
* @desc LocationListener Interface Methods implemented.
*/
@Override
public void onLocationChanged(Location location)
{
double lat = location.getLatitude();
double lng = location.getLongitude();
currentLatLng = new LatLng(lat, lng);
if(firstRefresh)
{
//Add Start Marker.
currentMarker = mMap.addMarker(new MarkerOptions().position(currentLatLng).title("Current Position"));//.icon(BitmapDescriptorFactory.fromResource(R.drawable.location)));
firstRefresh = false;
destMarker = mMap.addMarker(new MarkerOptions().position(Constants.POINT_DEST).title("Destination"));//.icon(BitmapDescriptorFactory.fromResource(R.drawable.location)));
mMap.moveCamera(CameraUpdateFactory.newLatLng(Constants.POINT_DEST));
mMap.animateCamera(CameraUpdateFactory.zoomTo(15));
getRoutingPath();
}
else
{
currentMarker.setPosition(currentLatLng);
}
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {}
@Override
public void onProviderEnabled(String provider) {}
@Override
public void onProviderDisabled(String provider) {}
/**
* @desc MapMarker Interface Methods Implemented.
*/
@Override
public boolean onMarkerClick(Marker marker)
{
if(marker.getTitle().contains("Destination"))
{
//Do some task on dest pin click
}
else if(marker.getTitle().contains("Current"))
{
//Do some task on current pin click
}
return false;
}
/**
*@desc Routing Listener interface methods implemented.
**/
@Override
public void onRoutingFailure(RouteException e)
{
Toast.makeText(MainActivity.this, "Routing Failed", Toast.LENGTH_SHORT).show();
}
@Override
public void onRoutingStart() { }
@Override
public void onRoutingSuccess(ArrayList<Route> list, int i)
{
try
{
//Get all points and plot the polyLine route.
List<LatLng> listPoints = list.get(0).getPoints();
PolylineOptions options = new PolylineOptions().width(5).color(Color.BLUE).geodesic(true);
Iterator<LatLng> iterator = listPoints.iterator();
while(iterator.hasNext())
{
LatLng data = iterator.next();
options.add(data);
}
//If line not null then remove old polyline routing.
if(line != null)
{
line.remove();
}
line = mMap.addPolyline(options);
//Show distance and duration.
txtDistance.setText("Distance: " + list.get(0).getDistanceText());
txtTime.setText("Duration: " + list.get(0).getDurationText());
//Focus on map bounds
mMap.moveCamera(CameraUpdateFactory.newLatLng(list.get(0).getLatLgnBounds().getCenter()));
LatLngBounds.Builder builder = new LatLngBounds.Builder();
builder.include(currentLatLng);
builder.include(Constants.POINT_DEST);
LatLngBounds bounds = builder.build();
mMap.animateCamera(CameraUpdateFactory.newLatLngBounds(bounds, 50));
}
catch (Exception e)
{
Toast.makeText(MainActivity.this, "EXCEPTION: Cannot parse routing response", Toast.LENGTH_SHORT).show();
}
}
@Override
public void onRoutingCancelled()
{
Toast.makeText(MainActivity.this, "Routing Cancelled", Toast.LENGTH_SHORT).show();
}
/**
* @method getRoutingPath
* @desc Method to draw the google routed path.
*/
private void getRoutingPath()
{
try
{
//Do Routing
Routing routing = new Routing.Builder()
.travelMode(Routing.TravelMode.DRIVING)
.withListener(this)
.waypoints(currentLatLng, Constants.POINT_DEST)
.build();
routing.execute();
}
catch (Exception e)
{
Toast.makeText(MainActivity.this, "Unable to Route", Toast.LENGTH_SHORT).show();
}
}
}
Constants.java
/**
* @class Constants
* @desc Constant class for holding values at runtime.
*/
public class Constants
{
//Map LatLong points
public static LatLng POINT_DEST = null;
}
activity_map.xml
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:map="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:id="@+id/viewA"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="0.1"
android:orientation="horizontal">
<fragment
android:id="@+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.packagename.MainActivity" />
</LinearLayout>
<LinearLayout
android:id="@+id/viewB"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="0.9"
android:gravity="center|left"
android:paddingLeft="20dp"
android:background="#FFFFFF"
android:orientation="vertical" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="16dp"
android:text="Distance ?"
android:paddingTop="3dp"
android:paddingLeft="3dp"
android:paddingBottom="3dp"
android:id="@+id/txt_distance" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="17dp"
android:paddingLeft="3dp"
android:text="Duration ?"
android:id="@+id/txt_time" />
</LinearLayout>
</LinearLayout>
<android.support.design.widget.FloatingActionButton
android:id="@+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="16dp"
android:clickable="true"
android:src="@android:drawable/ic_dialog_map"
app:layout_anchor="@id/viewA"
app:layout_anchorGravity="bottom|right|end"/>
</android.support.design.widget.CoordinatorLayout>
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