我正在使用Mapbox sdk用于安卓。
我想得到当前的位置，我也得到了，但问题是：
我现在错误的当前位置，这是在尼日利亚附近。 任何人都可以帮助我获得完美的位置吗？
这是我的gradle文件的详细信息：
android {
compileSdkVersion 27
defaultConfig {
applicationId "com.app.mapboxdemo"
minSdkVersion 15
targetSdkVersion 27
multiDexEnabled true
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
//noinspection GradleCompatible
implementation 'com.android.support:appcompat-v7:27.1.1'
implementation 'com.android.support:design:27.1.1'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
implementation 'com.intuit.ssp:ssp-android:1.0.5'
implementation 'com.intuit.sdp:sdp-android:1.0.5'
implementation('com.mapbox.mapboxsdk:mapbox-android-sdk:6.1.3@aar') {
transitive = true
}
implementation 'com.mapbox.mapboxsdk:mapbox-android-plugin-locationlayer:0.5.3'
implementation 'com.mapbox.mapboxsdk:mapbox-android-plugin-cluster-utils:0.3.0'
implementation 'com.mapbox.mapboxsdk:mapbox-android-navigation:0.13.0'
implementation('com.mapbox.mapboxsdk:mapbox-android-navigation-ui:0.13.0') {
transitive = true
}
}
以下是permisssions：
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.WAKE_LOCK"/>
<uses-feature android:name="android.hardware.location.gps"/>
这是获取用户位置的代码：
package com.app.mapboxdemo;// classes needed to initialize map
import com.mapbox.api.geocoding.v5.MapboxGeocoding;
import com.mapbox.mapboxsdk.Mapbox;
import com.mapbox.mapboxsdk.maps.MapView;
// classes needed to add location layer
import com.mapbox.geojson.Point;
import com.mapbox.mapboxsdk.maps.MapboxMap;
import com.mapbox.mapboxsdk.maps.OnMapReadyCallback;
import android.location.Location;
import com.mapbox.mapboxsdk.geometry.LatLng;
import android.os.Bundle;
import android.support.annotation.NonNull;
import com.mapbox.mapboxsdk.camera.CameraUpdateFactory;
import com.mapbox.mapboxsdk.plugins.locationlayer.LocationLayerPlugin;
import com.mapbox.mapboxsdk.plugins.locationlayer.modes.CameraMode;
import com.mapbox.mapboxsdk.plugins.locationlayer.modes.RenderMode;
import com.mapbox.services.android.navigation.ui.v5.NavigationLauncherOptions;
import com.mapbox.android.core.location.LocationEngine;
import com.mapbox.android.core.location.LocationEngineListener;
import com.mapbox.android.core.location.LocationEnginePriority;
import com.mapbox.android.core.location.LocationEngineProvider;
import com.mapbox.android.core.permissions.PermissionsListener;
import com.mapbox.android.core.permissions.PermissionsManager;
// classes needed to add a marker
import com.mapbox.mapboxsdk.annotations.Marker;
import com.mapbox.mapboxsdk.annotations.MarkerOptions;
// classes to calculate a route
import com.mapbox.services.android.navigation.ui.v5.route.NavigationMapRoute;
import com.mapbox.services.android.navigation.v5.navigation.NavigationRoute;
import com.mapbox.api.directions.v5.models.DirectionsResponse;
import com.mapbox.api.directions.v5.models.DirectionsRoute;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
// classes needed to launch navigation UI
import android.view.View;
import android.widget.Button;
import com.mapbox.services.android.navigation.ui.v5.NavigationLauncher;
// classes needed to add location layer
import com.mapbox.geojson.Point;
import com.mapbox.mapboxsdk.maps.MapboxMap;
import com.mapbox.mapboxsdk.maps.OnMapReadyCallback;
import android.location.Location;
import com.mapbox.mapboxsdk.geometry.LatLng;
import android.support.annotation.NonNull;
import com.mapbox.mapboxsdk.camera.CameraUpdateFactory;
import com.mapbox.mapboxsdk.plugins.locationlayer.LocationLayerPlugin;
import com.mapbox.mapboxsdk.plugins.locationlayer.modes.RenderMode;
import com.mapbox.services.android.navigation.ui.v5.NavigationLauncherOptions;
import com.mapbox.android.core.location.LocationEngine;
import com.mapbox.android.core.location.LocationEngineListener;
import com.mapbox.android.core.location.LocationEnginePriority;
import com.mapbox.android.core.location.LocationEngineProvider;
import com.mapbox.android.core.permissions.PermissionsListener;
import com.mapbox.android.core.permissions.PermissionsManager;
// classes needed to add a marker
import com.mapbox.mapboxsdk.annotations.Marker;
import com.mapbox.mapboxsdk.annotations.MarkerOptions;
// classes to calculate a route
import com.mapbox.services.android.navigation.ui.v5.route.NavigationMapRoute;
import com.mapbox.services.android.navigation.v5.navigation.NavigationRoute;
import com.mapbox.api.directions.v5.models.DirectionsResponse;
import com.mapbox.api.directions.v5.models.DirectionsRoute;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
import android.util.Log;
// classes needed to launch navigation UI
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import com.mapbox.services.android.navigation.ui.v5.NavigationLauncher;
import java.util.List;
public class NavigationActivity extends AppCompatActivity implements LocationEngineListener, PermissionsListener {
private MapView mapView;
// variables for adding location layer
private static MapboxMap map;
private PermissionsManager permissionsManager;
private LocationLayerPlugin locationPlugin;
private LocationEngine locationEngine;
private Location originLocation;
// variables for adding a marker
private Marker destinationMarker;
private LatLng originCoord;
private LatLng destinationCoord;
// variables for calculating and drawing a route
private Point originPosition;
private Point destinationPosition;
private DirectionsRoute currentRoute;
private static final String TAG = "DirectionsActivity";
private NavigationMapRoute navigationMapRoute;
EditText edtLatitude, edtLongitude;
private Button button, buttonGetLocation;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Mapbox.getInstance(this, getString(R.string.access_token));
setContentView(R.layout.activity_draw_navigation);
mapView = (MapView) findViewById(R.id.mapView);
mapView.onCreate(savedInstanceState);
mapView.getMapAsync(new OnMapReadyCallback() {
@Override
public void onMapReady(final MapboxMap mapboxMap) {
map = mapboxMap;
enableLocationPlugin();
originCoord = new LatLng(originLocation.getLatitude(), originLocation.getLongitude());
/*mapboxMap.addOnMapClickListener(new MapboxMap.OnMapClickListener() {
@Override
public void onMapClick(@NonNull LatLng point) {
if (destinationMarker != null) {
mapboxMap.removeMarker(destinationMarker);
}
destinationCoord = point;
destinationMarker = mapboxMap.addMarker(new MarkerOptions()
.position(destinationCoord)
);
destinationPosition = Point.fromLngLat(destinationCoord.getLongitude(), destinationCoord.getLatitude());
originPosition = Point.fromLngLat(originCoord.getLongitude(), originCoord.getLatitude());
getRoute(originPosition, destinationPosition);
button.setEnabled(true);
button.setBackgroundResource(R.color.mapboxBlue);
}
});*/
button = findViewById(R.id.startButton);
edtLatitude = findViewById(R.id.edtLatitude);
edtLongitude = findViewById(R.id.edtLongitude);
buttonGetLocation = findViewById(R.id.buttonGetLocation);
buttonGetLocation.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.e(TAG, "buttonGetLocation onClick: " );
checkLatLong(mapboxMap);
}
});
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Point origin = originPosition;
Point destination = destinationPosition;
boolean simulateRoute = true;
NavigationLauncherOptions options = NavigationLauncherOptions.builder()
.origin(origin)
.destination(destination)
.shouldSimulateRoute(simulateRoute)
.build();
Log.e(TAG, "onClick: Start Button");
// Call this method with Context from within an Activity
NavigationLauncher.startNavigation(NavigationActivity.this, options);
}
});
}
});
}
private void getRoute(Point origin, Point destination) {
NavigationRoute.builder()
.accessToken(Mapbox.getAccessToken())
.origin(origin)
.destination(destination)
.build()
.getRoute(new Callback<DirectionsResponse>() {
@Override
public void onResponse(Call<DirectionsResponse> call, Response<DirectionsResponse> response) {
// You can get the generic HTTP info about the response
Log.d(TAG, "Response code: " + response.code());
if (response.body() == null) {
Log.e(TAG, "No routes found, make sure you set the right user and access token.");
return;
} else if (response.body().routes().size() < 1) {
Log.e(TAG, "No routes found");
return;
}
currentRoute = response.body().routes().get(0);
// Draw the route on the map
if (navigationMapRoute != null) {
navigationMapRoute.removeRoute();
} else {
navigationMapRoute = new NavigationMapRoute(null, mapView, map, R.style.NavigationMapRoute);
}
navigationMapRoute.addRoute(currentRoute);
}
@Override
public void onFailure(Call<DirectionsResponse> call, Throwable throwable) {
Log.e(TAG, "Error: " + throwable.getMessage());
}
});
}
@SuppressWarnings({"MissingPermission"})
private void enableLocationPlugin() {
// Check if permissions are enabled and if not request
if (PermissionsManager.areLocationPermissionsGranted(this)) {
initializeLocationEngine();
locationPlugin = new LocationLayerPlugin(mapView, map, locationEngine);
locationPlugin.setLocationLayerEnabled(true);
locationPlugin.setCameraMode(CameraMode.TRACKING);
locationPlugin.setRenderMode(RenderMode.COMPASS);
} else {
permissionsManager = new PermissionsManager(this);
permissionsManager.requestLocationPermissions(this);
}
}
@SuppressWarnings({"MissingPermission"})
private void initializeLocationEngine() {
LocationEngineProvider locationEngineProvider = new LocationEngineProvider(this);
locationEngineProvider.obtainLocationEngineBy(LocationEngine.Type.ANDROID);
locationEngine = locationEngineProvider.obtainBestLocationEngineAvailable();
locationEngine.setPriority(LocationEnginePriority.HIGH_ACCURACY);
locationEngine.activate();
locationEngine.requestLocationUpdates();
Location lastLocation = locationEngine.getLastLocation();
// Log.e(TAG, "initializeLocationEngine: Latitude is"+lastLocation.getLatitude()+" Longitude is "+lastLocation.getLongitude() );
if (lastLocation != null) {
originLocation = lastLocation;
setCameraPosition(lastLocation);
} else {
locationEngine.addLocationEngineListener(this);
}
}
private void setCameraPosition(Location location) {
map.animateCamera(CameraUpdateFactory.newLatLngZoom(
new LatLng(location.getLatitude(), location.getLongitude()), 13));
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
permissionsManager.onRequestPermissionsResult(requestCode, permissions, grantResults);
}
@Override
public void onExplanationNeeded(List<String> permissionsToExplain) {
}
@Override
public void onPermissionResult(boolean granted) {
if (granted) {
enableLocationPlugin();
} else {
finish();
}
}
@Override
@SuppressWarnings({"MissingPermission"})
public void onConnected() {
locationEngine.requestLocationUpdates();
}
@Override
public void onLocationChanged(Location location) {
if (location != null) {
originLocation = location;
setCameraPosition(location);
locationEngine.removeLocationEngineListener(this);
}
}
@Override
@SuppressWarnings({"MissingPermission"})
protected void onStart() {
super.onStart();
if (locationEngine != null) {
locationEngine.requestLocationUpdates();
}
if (locationPlugin != null) {
locationPlugin.onStart();
}
mapView.onStart();
}
@Override
protected void onStop() {
super.onStop();
if (locationEngine != null) {
locationEngine.removeLocationUpdates();
}
if (locationPlugin != null) {
locationPlugin.onStop();
}
mapView.onStop();
}
@Override
protected void onDestroy() {
super.onDestroy();
mapView.onDestroy();
if (locationEngine != null) {
locationEngine.deactivate();
}
}
@Override
public void onLowMemory() {
super.onLowMemory();
mapView.onLowMemory();
}
@Override
protected void onResume() {
super.onResume();
mapView.onResume();
}
@Override
protected void onPause() {
super.onPause();
mapView.onPause();
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
mapView.onSaveInstanceState(outState);
}
public void checkLatLong(MapboxMap mapboxMap) {
if ((edtLatitude.getText() == null && edtLatitude.getText().length() == 0) && (edtLongitude.getText() == null && edtLongitude.getText().length() == 0)) {
Toast.makeText(getApplicationContext(), "Enter Proper Longitude and Latitude.", Toast.LENGTH_LONG).show();
} else {
if (destinationMarker != null) {
map.removeMarker(destinationMarker);
}
destinationCoord = new LatLng(Double.parseDouble(edtLatitude.getText().toString()), Double.parseDouble(edtLongitude.getText().toString()));
destinationMarker = map.addMarker(new MarkerOptions()
.position(destinationCoord)
);
Log.e(TAG, "checkLatLong: ");
destinationPosition = Point.fromLngLat(destinationCoord.getLongitude(), destinationCoord.getLatitude());
originPosition = Point.fromLngLat(originCoord.getLongitude(), originCoord.getLatitude());
getRoute(originPosition, destinationPosition);
setCameraPosition(originLocation);
button.setEnabled(true);
button.setBackgroundResource(R.color.mapboxBlue);
}
}
}
请帮助我获取用户位置。 感谢帮助，我提到了很多问题，但没有得到任何解决方案。 而且，也提出任何有关提出问题的帮助。
答案 0 :(得分：0)
我通过对方法initializeLocationEngine()和enableLocationPlugin()
以下是经过修改的答案方法：
private void enableLocationPlugin() {
// Check if permissions are enabled and if not request
if (PermissionsManager.areLocationPermissionsGranted(this)) {
initializeLocationEngine();
locationPlugin = new LocationLayerPlugin(mapView, map, locationEngine);
locationPlugin.setLocationLayerEnabled(true);
locationPlugin.setCameraMode(CameraMode.TRACKING);
locationPlugin.setRenderMode(RenderMode.COMPASS);
getLifecycle().addObserver(locationPlugin);
Log.e(TAG, "enableLocationPlugin:Permission Granted" );
} else {
permissionsManager = new PermissionsManager(this);
permissionsManager.requestLocationPermissions(this);
Log.e(TAG, "enableLocationPlugin:Permission Not Granted" );
}
}
private void initializeLocationEngine() {
locationEngine = new LocationEngineProvider(this).obtainBestLocationEngineAvailable();
locationEngine.setPriority(LocationEnginePriority.HIGH_ACCURACY);
locationEngine.addLocationEngineListener(this);
locationEngine.activate();
Location lastLocation = locationEngine.getLastLocation();
if (lastLocation != null) {
setCameraPosition(lastLocation);
} else {
locationEngine.addLocationEngineListener(this);
}
}