Mapbox NavigationView.startNavigation崩溃--索引0;大小0

Question

标题非常简单，我一直在尝试使用Java的navigation SDK UI组件启动导航。它生成了路线(我可以保证它不是空的(，但当我尝试开始导航时，它似乎崩溃了。它从一个单独的活动的按钮点击开始，该活动以JSON形式传递2个点。

Stacktrace:

E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.b31project.aanproject, PID: 8148
java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
at java.util.ArrayList.get(ArrayList.java:437)
at com.mapbox.navigation.ui.route.MapRouteLine$MapRouteLineSupport.buildWayPointFeatureFromLeg(MapRouteLine.kt:1333)
at com.mapbox.navigation.ui.route.MapRouteLine$MapRouteLineSupport.buildWayPointFeatureCollection(MapRouteLine.kt:1310)
at com.mapbox.navigation.ui.route.MapRouteLine.drawWayPoints(MapRouteLine.kt:694)
at com.mapbox.navigation.ui.route.MapRouteLine.reinitializeWithRoutes(MapRouteLine.kt:466)
at com.mapbox.navigation.ui.route.MapRouteLine.draw(MapRouteLine.kt:430)
at com.mapbox.navigation.ui.route.NavigationMapRoute.addRoutes(NavigationMapRoute.java:199)
at com.mapbox.navigation.ui.route.NavigationMapRoute.addRoute(NavigationMapRoute.java:179)
at com.mapbox.navigation.ui.map.NavigationMapboxMap.drawRoute(NavigationMapboxMap.java:556)
at com.mapbox.navigation.ui.NavigationView.startNavigation(NavigationView.java:452)
at com.b31project.aanproject.Navigation.onResponse(Navigation.java:112)
at com.mapbox.api.directions.v5.MapboxDirections$1.onResponse(MapboxDirections.java:186)
at retrofit2.DefaultCallAdapterFactory$ExecutorCallbackCall$1.lambda$onResponse$0$DefaultCallAdapterFactory$ExecutorCallbackCall$1(DefaultCallAdapterFactory.java:81)
at retrofit2.-$$Lambda$DefaultCallAdapterFactory$ExecutorCallbackCall$1$3wC8FyV4pyjrzrYL5U0mlYiviZw.run(Unknown Source:6)
at android.os.Handler.handleCallback(Handler.java:789)
at android.os.Handler.dispatchMessage(Handler.java:98)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6541)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)

XML:

<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:mapbox="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.mapbox.navigation.ui.NavigationView
android:id="@+id/navigationView"
android:layout_width="match_parent"
android:layout_height="match_parent"
mapbox:mapbox_cameraZoom="1"
/>
</androidx.coordinatorlayout.widget.CoordinatorLayout>

Navigation.java

package com.b31project.aanproject;
import android.content.Intent;
import android.graphics.Path;
import android.location.Location;
import android.os.Bundle;
import android.widget.Toast;
import androidx.appcompat.app.AppCompatActivity;
import com.mapbox.android.core.location.LocationEngineProvider;
import com.mapbox.api.directions.v5.DirectionsCriteria;
import com.mapbox.api.directions.v5.MapboxDirections;
import com.mapbox.api.directions.v5.models.DirectionsResponse;
import com.mapbox.api.directions.v5.models.RouteOptions;
import com.mapbox.mapboxsdk.Mapbox;
import com.mapbox.mapboxsdk.camera.CameraPosition;
import com.mapbox.mapboxsdk.geometry.LatLng;
import com.mapbox.mapboxsdk.style.sources.GeoJsonSource;
import com.mapbox.api.directions.v5.models.DirectionsRoute;
import com.mapbox.navigation.base.internal.route.RouteUrl;
import com.mapbox.navigation.base.options.NavigationOptions;
import com.mapbox.navigation.core.MapboxNavigation;
import com.mapbox.navigation.core.MapboxNavigationProvider;
import com.mapbox.navigation.ui.NavigationView;
import com.mapbox.navigation.ui.NavigationViewOptions;
import com.mapbox.navigation.ui.OnNavigationReadyCallback;
import com.mapbox.geojson.Point;
import com.mapbox.navigation.ui.listeners.NavigationListener;
import com.mapbox.navigation.ui.map.NavigationMapboxMap;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
import timber.log.Timber;

public class Navigation extends AppCompatActivity implements OnNavigationReadyCallback,
NavigationListener, Callback<DirectionsResponse> {
private NavigationView navigationView;
private NavigationMapboxMap navigationMapboxMap;
private MapboxNavigation navigator;
private Point origin;
private Point destination;
private DirectionsRoute currRoute;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Mapbox.getInstance(this, getString(R.string.mapbox_access_token));
setContentView(R.layout.activity_navigation);
setTheme(R.style.Theme_AppCompat_Light_NoActionBar);
navigationView = findViewById(R.id.navigationView);
Intent intent = getIntent();
origin = Point.fromJson(intent.getStringExtra("origin"));
destination = Point.fromJson(intent.getStringExtra("destination"));
navigationView.initialize(this);
}
@Override
public void onNavigationReady(boolean isRunning) {
if(navigationView.retrieveMapboxNavigation() != null){
navigator = navigationView.retrieveMapboxNavigation();
}else{
NavigationOptions n = MapboxNavigation.defaultNavigationOptionsBuilder(this, getString(R.string.mapbox_access_token)).build();
navigator = new MapboxNavigation(n);
}
navigationMapboxMap = navigationView.retrieveNavigationMapboxMap();
getRoute(origin,destination);
}
private void getRoute(Point origin, Point destination){
MapboxDirections directions = MapboxDirections.builder()
.accessToken(getString(R.string.mapbox_access_token))
.origin(origin)
.destination(destination)
.overview(DirectionsCriteria.OVERVIEW_FULL)
.profile(DirectionsCriteria.PROFILE_WALKING)
.voiceInstructions(true)
.build();
directions.enqueueCall(this);
}

@Override
public void onResponse(Call<DirectionsResponse> call, Response<DirectionsResponse> response) {
if(response.body() == null){
Timber.e("No route found");
this.onNavigationFinished();
}else if(response.body().routes().size() < 1){
Timber.e("Response empty");
this.onNavigationFinished();
}else{
currRoute = response.body().routes().get(0);
}
System.out.println(currRoute);
NavigationViewOptions navigationViewOptions = NavigationViewOptions.builder(this)
.navigationListener(this)
.directionsRoute(currRoute)
.build();
navigationView.startNavigation(navigationViewOptions);
}
@Override
public void onFailure(Call<DirectionsResponse> call, Throwable t) {
Timber.e("Error: " + t.getMessage());
this.onNavigationFinished();
}
@Override
public void onCancelNavigation() {
navigationView.stopNavigation();
finish();
}
@Override
public void onNavigationFinished() {
finish();
}
@Override
public void onNavigationRunning() {
}
}

应用级渐变

apply plugin: 'com.android.application'
android {
compileSdkVersion 30
buildToolsVersion "30.0.2"
ndkVersion "21.0.6113669"

defaultConfig {
applicationId "com.b31project.aanproject"
minSdkVersion 26
targetSdkVersion 30
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
compileOptions{
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
repositories{
mavenCentral()
maven{url 'https://mapbox.bintray.com/mapbox'}
}
}
dependencies {
implementation 'androidx.coordinatorlayout:coordinatorlayout:1.1.0'
implementation fileTree(dir: "libs", include: ["*.jar"])
implementation 'androidx.appcompat:appcompat:1.2.0'
implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test.ext:junit:1.1.2'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
implementation 'com.mapbox.mapboxsdk:mapbox-sdk-services:5.7.0'
implementation 'com.google.android.gms:play-services-location:17.1.0'
implementation 'com.google.android.material:material:1.2.1'
implementation 'com.mapbox.mapboxsdk:mapbox-android-plugin-places-v9:0.12.0'
implementation 'com.mapbox.navigation:ui:1.1.0'
}

错误就在onResponse的末尾。感谢您的帮助！

Answer 1

您面临的错误似乎源于未将steps设置为true:

请将您的MapboxDirections.builder()更改为：

MapboxDirections directions = MapboxDirections.builder()
.accessToken(getString(R.string.mapbox_access_token))
.origin(origin)
.steps(true)
.destination(destination)
.overview(DirectionsCriteria.OVERVIEW_FULL)
.profile(DirectionsCriteria.PROFILE_WALKING)
.voiceInstructions(true)
.build();

来自https://docs.mapbox.com/api/navigation/#retrieve-方向您需要设置steps = true，否则voiceInstructions不可用。这可能会导致问题。

代码的第二个问题：

您需要为语音指令指定一个unitType。因此，在MapboxDirections.builder():中添加单位类型

MapboxDirections directions = MapboxDirections.builder()
.accessToken(getString(R.string.mapbox_access_token))
.origin(origin)
.steps(true)
.destination(destination)
.overview(DirectionsCriteria.OVERVIEW_FULL)
.profile(DirectionsCriteria.PROFILE_WALKING)
.voiceInstructions(true)
.voiceUnits(VoiceUnit.METRIC)
.build();

Answer 2

关于缩放：

我建议在locationComponent上设置缩放，如下所述：https://docs.mapbox.com/android/maps/overview/location-component/#cameramode

首次实例化LocationComponent时，地图的最大/最小缩放级别将分别设置为toLocationComponentOptions#MAX_ZOOM_DEFAULT和LocationComponentOptions#MIN_ZOOM_DEFAULT。使用LocationComponentOptions类中的LocationComponentOptions#maxZoom()和LocationComponentOptions#minZoom()方法调整缩放范围。