Cannot get build for APK or over WIFI

[UmutKavil]

i have cloned the project

runs with cable on my local. But when i try to get build APK or access over wifi gives the following error when i click on start route

FATAL EXCEPTION: main
Process: org.maplibre.navigation.android.example, PID: 11092
 java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String org.maplibre.navigation.android.navigation.v5.models.ManeuverModifier$Type.getText()' on a null object reference
                                                                                                    	at org.maplibre.navigation.android.navigation.ui.v5.map.MapFpsDelegate.validLowFpsManeuver(MapFpsDelegate.java:114)
                                                                                                    	at org.maplibre.navigation.android.navigation.ui.v5.map.MapFpsDelegate.determineMaxFpsFrom(MapFpsDelegate.java:106)
                                                                                                    	at org.maplibre.navigation.android.navigation.ui.v5.map.MapFpsDelegate.adjustFpsFor(MapFpsDelegate.java:85)
                                                                                                    	at org.maplibre.navigation.android.navigation.ui.v5.map.FpsDelegateProgressChangeListener.onProgressChange(FpsDelegateProgressChangeListener.java:18)
                                                                                                    	at org.maplibre.navigation.android.navigation.v5.navigation.NavigationEventDispatcher.onProgressChange(NavigationEventDispatcher.kt:123)
                                                                                                    	at org.maplibre.navigation.android.navigation.v5.navigation.RouteProcessorThreadListener.onNewRouteProgress(RouteProcessorThreadListener.kt:18)
                                                                                                    	at org.maplibre.navigation.android.navigation.v5.navigation.RouteProcessorHandlerCallback.sendUpdateToListener$lambda$1(RouteProcessorHandlerCallback.kt:102)
                                                                                                    	at org.maplibre.navigation.android.navigation.v5.navigation.RouteProcessorHandlerCallback.$r8$lambda$gnfj4WsRHgV30HkTCLurzr4-KBU(Unknown Source:0)
                                                                                                    	at org.maplibre.navigation.android.navigation.v5.navigation.RouteProcessorHandlerCallback$$ExternalSyntheticLambda0.run(D8$$SyntheticClass:0)
                                                                                                    	at android.os.Handler.handleCallback(Handler.java:958)
                                                                                                    	at android.os.Handler.dispatchMessage(Handler.java:99)
                                                                                                    	at android.os.Looper.loopOnce(Looper.java:230)
                                                                                                    	at android.os.Looper.loop(Looper.java:319)
                                                                                                    	at android.app.ActivityThread.main(ActivityThread.java:8919)
                                                                                                    	at java.lang.reflect.Method.invoke(Native Method)
                                                                                                    	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:578)
                                                                                                    	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1103)

[ozcan-durak]

i m facing the same error. Anyone knows ?

[UmutKavil]

anyone able to get build with release *

[Fabi755]

You can run the Valhalla example without any configuration changes.

For the other samples, you need configure a server.

Do you changed the app/src/main/res/values/developer-config.xml with needed information?

[aurelie-rps]

I am experiencing the same issue on my phone over Wi-Fi but not when it is connected via USB.

[Fabi755]

This make no sense to me, as this is an runtime error and has nothing to do with your setup.

As the error says, the ManeuverModifier is NULL. You need to check the response.

[aurelie-rps]

I just found out the reason why there is a difference in MapFps.java, validLowFpsManeuver function is not called when the phone is plugged in :

private int determineMaxFpsFrom(RouteProgress routeProgress, Context context) {
    final boolean isPluggedIn = batteryMonitor.isPluggedIn(context);
    RouteLegProgress routeLegProgress = routeProgress.getCurrentLegProgress();

    if (isPluggedIn) {
      return LOW_POWER_MAX_FPS;
    } else if (validLowFpsManeuver(routeLegProgress) || validLowFpsDuration(routeLegProgress)) {
      return maxFpsThreshold;
    } else {
      return LOW_POWER_MAX_FPS;
    }
  } 

[ozcan-durak]

Temporary Fix Solution:

Replace the :

private boolean validLowFpsManeuver(RouteLegProgress routeLegProgress) {
    final String maneuverModifier = routeLegProgress.getCurrentStep().getManeuver().getModifier().getText();
    return maneuverModifier != null
      && (maneuverModifier.equals(NavigationConstants.STEP_MANEUVER_MODIFIER_STRAIGHT)
      || maneuverModifier.equals(NavigationConstants.STEP_MANEUVER_MODIFIER_SLIGHT_LEFT)
      || maneuverModifier.equals(NavigationConstants.STEP_MANEUVER_MODIFIER_SLIGHT_RIGHT));
  }

With :

private boolean validLowFpsManeuver(RouteLegProgress routeLegProgress) {
    if (routeLegProgress == null) {
      return false;
    }

    if (routeLegProgress.getCurrentStep() == null) {
      return false;
    }

    if (routeLegProgress.getCurrentStep().getManeuver() == null) {
      return false;
    }

    if (routeLegProgress.getCurrentStep().getManeuver().getModifier() == null) {
      return false;
    }

    final String maneuverModifier = routeLegProgress.getCurrentStep().getManeuver().getModifier().getText();
    if (maneuverModifier == null) {
      return false;
    }