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Set trace from external source
Posted: Wed Mar 17, 2021 3:44 pm
by MiKu_MichDem
We have a specific case - a C# client that saves a route on an internal Java server which then should be displayed on an Android device.
I have issues with doing so on Android as each method for displaying trace requires a child class of a
NativeObject at some point. Objects of this class are effectively immutable from Java so I cannot use them.
For example - this is the code I use for :
Code: Select all
val points = SVPWayPointArray(points.size)
points.forEachIndexed { index, pointStr ->
// gathering x and y from pointStr
val position = GeoPosition(x, y).toPosition()
val point = SVPWayPoint(WayPoint(position))
points.set(index, point)
}
NavigationSDK.createRouteFromSVPPoints(points.size(), points, 0x000000FF, 0x000000FF)
The code above fails on
points.set(index, point). Other approaches that I've found also fail on any sort of manipulation of
NativeObject instances.
How then would it be possible to set a trace on a map from already existing trace?
Re: Set trace from external source
Posted: Wed Mar 17, 2021 3:48 pm
by Bernd Welter
Hello Michal,
I forwarded the topic to Sebastian (Product Management) because I can't answer it by myself.
Best regards,
Bernd
Re: Set trace from external source
Posted: Wed Mar 17, 2021 4:16 pm
by SebastianSchlichting
Actually we can only support java code and native (C++). With C# we don't have any experience and can't support you there.
Here is the example code for Java which extracts the way points from the JSON and creates a WayPointArray.
The corresponding paragraph in the tutorial can be found here:
http://navigator.ptvgroup.com/DE/sdk/tu ... ata-format
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JSONArray array = new JSONArray(content);
for (int i = 0; i < array.length(); ++i) {
JSONObject point = array.getJSONObject(i);
if (point.getString("type").toUpperCase().equals("SVP")) {
JSONArray points = point.getJSONArray("points");
SVPWayPointArray wps = new SVPWayPointArray(points.length());
for (int j = 0; j < points.length(); ++j) {
wps.set(j, toSVP(points.getJSONObject(j)) );
}
}
}
Do you only want to draw a trace, or do you want a trace with a route?
If you want only a trace you have to look into the code of tutorial 10. In the MainActivity there is a method addCircleAroundCurrentPosition. Here you will find an example how to draw a trace only.
Re: Set trace from external source
Posted: Fri Mar 19, 2021 3:54 pm
by MiKu_MichDem
Our application is written mostly in Kotlin which is has full interoperability with Java. It's functionally the same as it's compiled into the same code.
I've noticed that in Kotlin I get the following error:
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.lang.IllegalAccessError: Illegal class access: 'pl.softprojekt.fp4mtransport.gui.pages.myOrders.MyOrdersRoutePreview' attempting to access 'com.ptvag.navigation.sdk.NativeObject' (declaration of 'pl.softprojekt.fp4mtransport.gui.pages.myOrders.MyOrdersRoutePreview' appears in /data/app/pl.softprojekt.fp4mtransport-3C8qHB4JPgOa_2czl2fDZw==/base.apk!classes2.dex)
Either way. In pure Java code the SVPWayPointArray is sucesfully created, however it fails on method createRouteFromSVPPoints.
This is how the method is called:
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NavigationSDK.createRouteFromSVPPoints(wayPointArray.size(), wayPointArray, 0x000000FF, 0x000000FF);
And this is the exception it produces:
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java.lang.UnsatisfiedLinkError: No implementation found for void com.ptvag.navigation.sdk.NavigationSDK.createRouteFromSVPPointsJNI(int, long, long, long) (tried Java_com_ptvag_navigation_sdk_NavigationSDK_createRouteFromSVPPointsJNI and Java_com_ptvag_navigation_sdk_NavigationSDK_createRouteFromSVPPointsJNI__IJJJ)
at com.ptvag.navigation.sdk.NavigationSDK.createRouteFromSVPPointsJNI(Native Method)
at com.ptvag.navigation.sdk.NavigationSDK.createRouteFromSVPPoints(NavigationSDK.java:436)
at pl.softprojekt.fp4mtransport.gui.pages.myOrders.Tracer.draw(Tracer.java:25)
at pl.softprojekt.fp4mtransport.gui.pages.myOrders.MyOrdersRoutePreview.decodePointCollection(MyOrdersRoutePreview.kt:141)
at pl.softprojekt.fp4mtransport.gui.pages.myOrders.MyOrdersRoutePreview.onViewCreated(MyOrdersRoutePreview.kt:70)
at androidx.fragment.app.FragmentStateManager.createView(FragmentStateManager.java:332)
at androidx.fragment.app.FragmentManager.moveToState(FragmentManager.java:1187)
at androidx.fragment.app.FragmentManager.moveToState(FragmentManager.java:1356)
at androidx.fragment.app.FragmentManager.moveFragmentToExpectedState(FragmentManager.java:1434)
at androidx.fragment.app.FragmentManager.moveToState(FragmentManager.java:1497)
at androidx.fragment.app.BackStackRecord.executeOps(BackStackRecord.java:447)
at androidx.fragment.app.FragmentManager.executeOps(FragmentManager.java:2169)
at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:1992)
at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:1947)
at androidx.fragment.app.FragmentManager.execSingleAction(FragmentManager.java:1818)
at androidx.fragment.app.BackStackRecord.commitNowAllowingStateLoss(BackStackRecord.java:303)
at androidx.fragment.app.FragmentStatePagerAdapter.finishUpdate(FragmentStatePagerAdapter.java:270)
at androidx.viewpager.widget.ViewPager.populate(ViewPager.java:1244)
at androidx.viewpager.widget.ViewPager.populate(ViewPager.java:1092)
at androidx.viewpager.widget.ViewPager.onMeasure(ViewPager.java:1622)
at android.view.View.measure(View.java:25218)
at androidx.constraintlayout.widget.ConstraintLayout$Measurer.measure(ConstraintLayout.java:792)
at androidx.constraintlayout.solver.widgets.ConstraintWidgetContainer.measure(ConstraintWidgetContainer.java:583)
at androidx.constraintlayout.solver.widgets.analyzer.Direct.verticalSolvingPass(Direct.java:355)
at androidx.constraintlayout.solver.widgets.analyzer.Direct.solveVerticalMatchConstraint(Direct.java:636)
at androidx.constraintlayout.solver.widgets.analyzer.Direct.verticalSolvingPass(Direct.java:407)
at androidx.constraintlayout.solver.widgets.analyzer.Direct.verticalSolvingPass(Direct.java:446)
at androidx.constraintlayout.solver.widgets.analyzer.Direct.solvingPass(Direct.java:178)
at androidx.constraintlayout.solver.widgets.ConstraintWidgetContainer.layout(ConstraintWidgetContainer.java:642)
at androidx.constraintlayout.solver.widgets.analyzer.BasicMeasure.solveLinearSystem(BasicMeasure.java:159)
at androidx.constraintlayout.solver.widgets.analyzer.BasicMeasure.solverMeasure(BasicMeasure.java:290)
at androidx.constraintlayout.solver.widgets.ConstraintWidgetContainer.measure(ConstraintWidgetContainer.java:119)
at androidx.constraintlayout.widget.ConstraintLayout.resolveSystem(ConstraintLayout.java:1578)
at androidx.constraintlayout.widget.ConstraintLayout.onMeasure(ConstraintLayout.java:1690)
at android.view.View.measure(View.java:25218)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6937)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:194)
at android.view.View.measure(View.java:25218)
at androidx.constraintlayout.widget.ConstraintLayout$Measurer.measure(ConstraintLayout.java:792)
at androidx.constraintlayout.solver.widgets.ConstraintWidgetContainer.measure(ConstraintWidgetContainer.java:583)
Re: Set trace from external source
Posted: Wed Mar 24, 2021 2:36 pm
by SebastianSchlichting
Hi,
could you please switch from using createRouteFromSVPPoints to the following:
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try {
Tour tour = new Tour(new WayPoint(937168,6270162));
SVPWayPointArray ar = new SVPWayPointArray(2);
SVPWayPoint p1 = new SVPWayPoint(934313,6268779,-1);
SVPWayPoint p2 = new SVPWayPoint(933440,6268782,-1);
ar.set(0, p1);
ar.set(1, p2);
tour.addSVPs(ar);
CalculateTourResult result = NavigationSDK.calculateTour(tour, calcRouteObserver);
} catch (NavigationException e) {
e.printStackTrace();
}
The functionality which you are using is an error in the API docs, createRouteFromSVPPoints is deprecated. We will fix it in newer version.