如何在Android上使用Google Maps Directions API？

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

<meta-data
    android:name="com.google.android.geo.API_KEY"
    android:value="YOUR_API_KEY" />

<com.google.android.gms.maps.MapView
    android:id="@+id/mapView"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

private MapView mapView;

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

    mapView = findViewById(R.id.mapView);
    mapView.onCreate(savedInstanceState);
    mapView.getMapAsync(this);
}

@Override
public void onMapReady(GoogleMap googleMap) {
    // 在地图准备好后，可以进行相关操作
    // 例如，使用Directions API获取路线信息
    GoogleDirection.withServerKey("YOUR_API_KEY")
            .from(new LatLng(START_LATITUDE, START_LONGITUDE))
            .to(new LatLng(END_LATITUDE, END_LONGITUDE))
            .execute(new DirectionCallback() {
                @Override
                public void onDirectionSuccess(Direction direction, String rawBody) {
                    // 处理路线信息
                    if (direction.isOK()) {
                        // 获取路线步骤、距离、持续时间等信息
                        Route route = direction.getRouteList().get(0);
                        Leg leg = route.getLegList().get(0);
                        String distance = leg.getDistance().getText();
                        String duration = leg.getDuration().getText();
                        List<Step> stepList = leg.getStepList();
                        // 在地图上绘制路线
                        ArrayList<LatLng> directionPositionList = leg.getDirectionPoint();
                        PolylineOptions polylineOptions = DirectionConverter.createPolyline(MainActivity.this, directionPositionList, 5, Color.RED);
                        googleMap.addPolyline(polylineOptions);
                    }
                }

                @Override
                public void onDirectionFailure(Throwable t) {
                    // 处理失败情况
                }
            });
}

@Override
public void onResume() {
    super.onResume();
    mapView.onResume();
}

@Override
public void onPause() {
    super.onPause();
    mapView.onPause();
}

@Override
public void onDestroy() {
    super.onDestroy();
    mapView.onDestroy();
}

@Override
public void onLowMemory() {
    super.onLowMemory();
    mapView.onLowMemory();
}