Android Question Google Maps route: how to zoom on it?

[Facilauto Juan]

Hello there!

I have my route drawn in my Google Map Api v2 view. I'm using a line with multiple points.

The problem is that I want to zoom in to that route and I don't know how. I want to zoom to the point that all the route is shown in the screen.

Is this possible?

Thanks for your answers and your time.

 

[warwound]

Look at my post here: http://www.b4x.com/android/forum/threads/gmaps-zoom.34926/#post-204557.

Use the LatLngBoundsBuilder to build a LatLngBounds that contains all LatLngs in your route.
Now you can use the GoogleMapsExtras AnimateToBounds method to fit the map to your route.

Martin.

 

[Facilauto Juan]

I have used it, but it throws me this error:

** Activity (main) Create, isFirst = true **


** Activity (main) Resume **


MapFragment1_Ready


Cannot get methods of class: uk.co.martinpearman.b4a.googlemapsextras.GoogleMapsExtras, disabling cache.


Error occurred on line: 98 (main)


java.lang.RuntimeException: Method: AnimateToBounds not found in: uk.co.martinpearman.b4a.googlemapsextras.GoogleMapsExtras


    at anywheresoftware.b4a.shell.Shell$MethodCache.getMethod(Shell.java:735)
    at anywheresoftware.b4a.shell.Shell.getMethod(Shell.java:398)
    at anywheresoftware.b4a.shell.Shell.runVoidMethod(Shell.java:517)
    at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:235)
    at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:174)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:511)
    at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:93)
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:158)
    at anywheresoftware.b4a.BA.raiseEvent(BA.java:154)
    at anywheresoftware.b4a.objects.MapFragmentWrapper$1.onCameraChange(MapFragmentWrapper.java:141)
    at com.google.android.gms.maps.GoogleMap$2.onCameraChange(Unknown Source)
    at com.google.android.gms.internal.cn$a.onTransact(Unknown Source)


    at android.os.Binder.transact(Binder.java)
    at cmq.a(SourceFile:93)
    at maps.af.q.a(Unknown Source)
    at maps.af.r.run(Unknown Source)
    at android.os.Handler.handleCallback(Handler.java)
    at android.os.Handler.dispatchMessage(Handler.java)
    at android.os.Looper.loop(Looper.java)
    at android.app.ActivityThread.main(ActivityThread.java)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:511)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java)
    at dalvik.system.NativeStart.main(Native Method)

 

[warwound]

Someone else reported a very similar error recently with GoogleMapsExtras - the problem was that they were compiling in the new rapid debugging mode and for some reason it caused this error.
http://www.b4x.com/android/forum/threads/google-maps-android-v2-tutorial.24415/page-14#post-203217

Are you compiling using rapid debugging mode?
If so then try compiling using release or legacy debug mode and see if the error disappears.

Martin.

 

[Erel]

It happens because one of the methods in this library requires a higher version of Android.

@warwound, you can fix it by changing the problematic method to signature to a "safe" signature. Which means that it doesn't expose any unavailable type.

 

[Facilauto Juan]

The problem was the rapid debugging mode! Thanks!

 

[warwound]

It happens because one of the methods in this library requires a higher version of Android.

@warwound, you can fix it by changing the problematic method to signature to a "safe" signature. Which means that it doesn't expose any unavailable type.

@Erel
Can you explain that in a bit more detail?
(What is the unavailable type?)

Is the user likely to be using an old version of the Google Play Services library?
Is this error only related to rapid debugging mode or can it occur at other times?

Martin.

 

[Erel]

It will only happen in rapid debug mode.

Can you send me the library source code? I will have a look.

 

[warwound]

It will only happen in rapid debug mode.

Can you send me the library source code? I will have a look.

I've exported the project from Eclipse as an archive file and attached it to this post.

Martin.

 

[Erel]

It is hard to say. The "since" version is not mentioned in Google documentation for this service.

However I was not exactly correct before. Upgrading to the latest version of Google Play Services may fix this issue.