B4A Library GoogleMapsExtras

GoogleMapsExtras is an ongoing project to implement more of the Google Maps Android v2 classes in Basic4Android.

Currently the library allows you to create these objects:

• BitmapDescriptor
• BitmapDescriptorFactory
• Circle
• CircleOptions
• GroundOverlay
• InfoWindowAdapter
• MarkerOptions
• Point
• Projection
• OnInfoWindowClickListener
• OnMarkerDragListener
• OnMyLocationChangeListener
• Polygon
• TileOverlay
• VisibleRegion

Tutorials for each object will be uploaded to the Google Maps Android v2 tutorial thread.

Martin.

 

[iCAB]

Yes, but my polyline with zindex 3 is drawn behind markers. Try it ....

I did that, by I am still getting the same results. Now let me clarify a bit more:

1. The polygon being drawn with transparency, and StorkeWidth = 2 .
2. So the markers are more or less visible
3. When I place a marker on the edge of the polygon, I can clearly see that the edge line is going over the icon

 

[JackKirk]

Hi,

I've fairly successfully used the GoogleMapsExtras library in an app I am writing.

I've been able to use a CancelCallback object in an AnimateCamera3 method to detect when it finishes.

What I am finding though is that the app gets control in the CancelCallback_Finish event after the camera move/ rotate/ zoom has occurred but not necessarily after all necessary tiles have been loaded.

Is there any way to detect all necessary tiles have been loaded after you fire the AnimateCamera3 method?

Thanks in anticipation...

 

[scrat]

Markers are always on top of others layers
zindex of the markers is defined by latitude. Lower latitude ==> greater zindex.

 

[warwound]

Is there any way to detect all necessary tiles have been loaded after you fire the AnimateCamera3 method?

https://developers.google.com/andro...ndroid/gms/maps/GoogleMap.OnMapLoadedCallback

GoogleMapsExtras has a method:

SetOnMapLoadedCallback (GoogleMap1 As GoogleMap, OnMapLoadedCallback1 As OnMapLoadedCallback)
Sets a callback that's invoked when the map has finished rendering.

 

[JackKirk]

GoogleMapsExtras has a method:

SetOnMapLoadedCallback (GoogleMap1 As GoogleMap, OnMapLoadedCallback1 As OnMapLoadedCallback)
Sets a callback that's invoked when the map has finished rendering.

Martin,

Many thanks - after running up a few dead ends of my own creation I was eventually able to work out how to detect completion of camera animation and map rendering.

 

[JackKirk]

Not sure whether this is a Google Maps or Google Maps Extra question...

If there any way to determine the screen dimensions of a Google Map marker - i.e. a "standard" marker as created by the AddMarker or AddMarker2 methods?

Thanks in anticipation...

 

[warwound]

If there any way to determine the screen dimensions of a Google Map marker - i.e. a "standard" marker as created by the AddMarker or AddMarker2 methods?

Not that i know of.
The Marker, BitmapDescriptor and BitmapDescriptorFactory don't have any methods to get the icon dimensions.

 

[Leni Berry]

how to get current lat,lon from this library?

 

[Erel]

GoogleMap.MyLocation returns the current location.

 

[Leni Berry]

GoogleMap.MyLocation returns the current location.

tq erel, solved...

i put gmap.MyLocationEnabled=True, and then waiting with timer_tick until gmap.MyLocation.IsInitialized=True

if gmap.MyLocation.IsInitialized=True then

latnya=gmap.MyLocation.Latitude
longnya=gmap.MyLocation.Longitude

end if

 

[s4agtech]

Hi, i have a problem. I would like the user to draw a polygon clicking on the screen and when the polygon "closes" a dialog appear. I only can draw polygons sending the points "hardcoded". How can the user draw a polygon by clicken? Is there any example?
Thanks

 

[Almora]

I solved the problem.

 

[Ohanian]

@warwound

can you add other method/events like :

setOnGroundOverlayClickListener
OnCameraIdleListener
OnGroundOverlayClickListener
OnIndoorStateChangeListener

Thanks in advance

 

[DonManfred]

setOnGroundOverlayClickListener

Where did you get this ? It is not listed on https://developer.android.com
Same for OnCameraIdleListener, OnGroundOverlayClickListener

Only the OnIndoorStateChangeListener is listed there...

 

[Ohanian]

Where did you get this ? It is not listed on https://developer.android.com
Same for OnCameraIdleListener, OnGroundOverlayClickListener

Only the OnIndoorStateChangeListener is listed there...

From here :
https://developers.google.com/android/reference/com/google/android/gms/maps/GoogleMap

 

[DonManfred]

The search on the developer site does not work good then i guess...

I tried to search for all of them but only found one

 

[Blueforcer]

I get an error when i try to compile this:

Dim OnMyLocationChangeListener1 As OnMyLocationChangeListener
    OnMyLocationChangeListener1.Initialize("OnMyLocationChangeListener1")
    gmapextras.SetOnMyLocationChangeListener(gmap, OnMyLocationChangeListener1)

gmapextras.SetOnMyLocationChangeListener(gmap, On
javac 1.8.0_25
src\the\walk\home.java:458: error: cannot find symbol
mostCurrent._gmapextras.SetOnMyLocationChangeListener((com.google.android.gms.maps.GoogleMap)(mostCurrent._gmap.getObject()),(com.google.android.gms.maps.GoogleMap.OnMyLocationChangeListener)(_onmylocationchangelistener1.getObject()));
^
symbol: class google
location: class com

i use the "new" googlemap library from here:
https://www.b4x.com/android/forum/threads/google-maps.63930/

 

[Erel]

Does it compile properly without these lines?

 

[Blueforcer]

yep. the app works without errors then

 

[Blueforcer]

It seems that every GooglemapExtra function failed with this error.
same with

gmapextras.SetBuildingsEnabled(gmap,True)

and i tested it with a completly new project, and there it works. but i dont see the mistake...

-same librariea in both projects
- same manifest