Mapbox地图在android上不显示

Question

当我测试它的前几次，它显示得很好，然后我添加了一些代码，它就停止了。它仍然在左下角屏幕上显示Mapbox徽标，但它没有加载地图。以下是MapActivity上的代码:

public class MapActivity extends AppCompatActivity implements OnMapReadyCallback, LocationEngineListener, PermissionsListener {
private MapView mapView;
private Button startButton;
private MapboxMap map;
private PermissionsManager permissionsManager;
private LocationEngine locationEngine;
private Location originLocation;
private LocationLayerPlugin locationLayerPlugin;
private Locash customerLocash;
private Point destinationPosition;
private Point originPosition;
private Marker destinationMarker;
private NavigationMapRoute navigationMapRoute;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Mapbox.getInstance(this, getString(R.string.access_token));
setContentView(R.layout.activity_map);
mapView = findViewById(R.id.mapView);
mapView.onCreate(savedInstanceState);
mapView.getMapAsync(this);

startButton = findViewById(R.id.startButton);
Intent activityIntent = getIntent();
String locationJson = activityIntent.getStringExtra("location");
Gson gson = new Gson();
customerLocash = gson.fromJson(locationJson,Locash.class);
startButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//Launch Navigation
NavigationLauncherOptions options = NavigationLauncherOptions.builder()
.origin(originPosition)
.destination(destinationPosition)
.shouldSimulateRoute(true)
.build();
NavigationLauncher.startNavigation(MapActivity.this, options);
}
});
}
@Override
public void onMapReady(MapboxMap mapboxMap) {
map = mapboxMap;
enableLocation();
LatLng point = new LatLng(customerLocash.getLongitude(),customerLocash.getLatitude());
destinationMarker = map.addMarker(new MarkerOptions().position(point));
destinationPosition = Point.fromLngLat(point.getLongitude(),point.getLatitude());
originPosition = Point.fromLngLat(originLocation.getLongitude(), originLocation.getLatitude());
getRoute(originPosition, destinationPosition);
startButton.setEnabled(true);
}
private void enableLocation() {
if (PermissionsManager.areLocationPermissionsGranted(this)){ 
initializeLocationEngine();
initializeLocationLayer();

} else {
permissionsManager = new PermissionsManager(this);
permissionsManager.requestLocationPermissions(this);
}
}
@SuppressWarnings("MissingPermission")
private void initializeLocationEngine() {
locationEngine = new LocationEngineProvider(this)
.obtainBestLocationEngineAvailable();
locationEngine.setPriority(LocationEnginePriority.HIGH_ACCURACY);
locationEngine.activate();
Location lastLocation = locationEngine.getLastLocation();
if (lastLocation != null){
originLocation = lastLocation;
setCameraPosition(lastLocation);
} else {
locationEngine.addLocationEngineListener(this);
}
}
@SuppressWarnings("MissingPermission")
private void initializeLocationLayer() {
locationLayerPlugin = new LocationLayerPlugin(mapView, map, locationEngine);
locationLayerPlugin.setLocationLayerEnabled(true);
locationLayerPlugin.setCameraMode(CameraMode.TRACKING);
locationLayerPlugin.setRenderMode(RenderMode.NORMAL);
}
private void setCameraPosition(Location location){
map.animateCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(location.getLatitude(),
location.getLongitude()),13.0));
}
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) {
if (response.body()  == null){
Toast.makeText(MapActivity.this, "No Routes Found", Toast.LENGTH_SHORT).show();
return;
} else if (response.body().routes().size() == 0){
Toast.makeText(MapActivity.this, "No Routes Found", Toast.LENGTH_SHORT).show();
return;
}
DirectionsRoute currentRoute = response.body().routes().get(0);
navigationMapRoute = new NavigationMapRoute(null, mapView,map);
navigationMapRoute.addRoute(currentRoute);
}
@Override
public void onFailure(Call<DirectionsResponse> call, Throwable t) {
Toast.makeText(MapActivity.this, "Error:" + t.getMessage(), Toast.LENGTH_SHORT).show();
}
});
}
@SuppressWarnings("MissingPermission")
@Override
public void onConnected() {
locationEngine.requestLocationUpdates();
}
@Override
public void onLocationChanged(Location location) {
if (location != null){
originLocation = location;
setCameraPosition(location);
}
}
@Override
public void onExplanationNeeded(List<String> permissionsToExplain) {
Toast.makeText(this, "Location Required", Toast.LENGTH_SHORT).show();
}
@Override
public void onPermissionResult(boolean granted) {
if (granted){
enableLocation();
}
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
permissionsManager.onRequestPermissionsResult(requestCode, permissions, grantResults);
}
@Override
@SuppressWarnings("MissingPermission")
protected void onStart() {
super.onStart();
if (locationEngine != null){
locationEngine.requestLocationUpdates();
}
if (locationLayerPlugin != null){
locationLayerPlugin.onStart();
}
mapView.onStart();
}
@Override
protected void onPause() {
super.onPause();
mapView.onPause();
}
@Override
protected void onResume() {
super.onResume();
mapView.onResume();
}
@Override
protected void onStop() {
super.onStop();
if (locationEngine != null){
locationEngine.removeLocationUpdates();
}
if (locationLayerPlugin != null){
locationLayerPlugin.onStop();
}
mapView.onStop();
}
@Override
public void onSaveInstanceState(@NonNull Bundle outState, @NonNull PersistableBundle outPersistentState) {
super.onSaveInstanceState(outState, outPersistentState);
mapView.onSaveInstanceState(outState);
}
@Override
public void onLowMemory() {
super.onLowMemory();
mapView.onLowMemory();
}
@Override
protected void onDestroy() {
super.onDestroy();
if (locationEngine != null){
locationEngine.deactivate();
}
mapView.onDestroy();
}
}

哦，Locash对象是一个我用来在firebase上存储用户位置的类。

Answer 1

看起来像是我遇到的问题。不确定这是否相同，但在我的情况下，将textureView选项设置为true解决了它。

我在代码中是这样做的:

val resourceOptions = ResourceOptions.Builder()
.accessToken(context.getString(R.string.mapbox_access_token))
.build()
mapView = MapView(context, MapInitOptions(context, resourceOptions).apply { textureView = true })

我不确定如何在XML中做到这一点。

Answer 2

可以用XML

& lt; com.mapbox.mapboxsdk.maps.MapView

…

应用:mapbox_renderTextureMode ="true"/祝辞