Kivy app with plyer gps data doesnt recentre the map - kivy

Question

I have a simple main app which on start calls the gps functionality of plyer and then gets the location from the android phone and then recentres my map to that location. The code looks something like this
main.py
from kivy.app import App
from mapcode import MapCode
from plyer import gps
class MainApp(App):
def on_start(self):
gps.configure(on_location=self.on_gps_location)
gps.start()
def on_gps_location(self, **kwargs):
print(kwargs)
latitude = kwargs['lat']
longitude = kwargs['lon']
map = MapCode()
map.recentremap(latitude, longitude)
gps.stop()
MainApp().run()
main.kv
#:include mapcode.kv
BoxLayout:
orientation: 'vertical'
MapCode:
id: MapCode
mapcode.py
from kivy_garden.mapview import MapView
from kivy.app import App
from kivy_garden.mapview import MapMarkerPopup
class MapCode(MapView):
def recentremap(self, lat, lon):
print("in recentre")
app = App.get_running_app()
print(app)
app.root.ids.MapCode.center_on(lat, lon)
mapcode.kv
#:import MapView kivy_garden.mapview
<MapCode>:
lat: 18.5204
lon: 73.8567
zoom: 13
on_zoom:
self.zoom = 13 if self.zoom < 13 else self.zoom
double_tap_zoom: True
on_lat:
lat = 18.5204
on_lon:
lon = 73.8567
MapMarkerPopup:
id:MapMarkerPopup
lat:18.5204
lon:73.8567
When I deploy this app on my phone, the app crashes by giving the following error:
Traceback (most recent call last):
11-26 00:53:42.843 3852 3933 I python : File "/home/kaushik/PycharmProjects/Tesekkurler/.buildozer/android/app/main.py", line 20, in <module>
11-26 00:53:42.844 3852 3852 I python : Traceback (most recent call last):
11-26 00:53:42.844 3852 3852 I python : File "jnius/jnius_proxy.pxi", line 50, in jnius.jnius.PythonJavaClass.invoke
11-26 00:53:42.844 3852 3852 I python : File "jnius/jnius_proxy.pxi", line 76, in jnius.jnius.PythonJavaClass._invoke
11-26 00:53:42.845 3852 3852 I python : File "/home/kaushik/PycharmProjects/Tesekkurler/.buildozer/android/platform/build-arm64-v8a_armeabi-v7a/build/python-installs/tesekkurlerapp/arm64-v8a/plyer/platforms/android/gps.py", line 36, in onLocationChangedList
11-26 00:53:42.845 3852 3852 I python : File "/home/kaushik/PycharmProjects/Tesekkurler/.buildozer/android/platform/build-arm64-v8a_armeabi-v7a/build/python-installs/tesekkurlerapp/arm64-v8a/plyer/platforms/android/gps.py", line 24, in onLocationChanged
11-26 00:53:42.845 3852 3852 I python : File "/home/kaushik/PycharmProjects/Tesekkurler/.buildozer/android/app/main.py", line 16, in on_gps_location
11-26 00:53:42.845 3852 3852 I python : File "/home/kaushik/PycharmProjects/Tesekkurler/.buildozer/android/platform/build-arm64-v8a_armeabi-v7a/build/python-installs/tesekkurlerapp/arm64-v8a/kivy_garden/mapview/view.py", line 545, in __init__
11-26 00:53:42.845 3852 3852 I python : File "kivy/graphics/instructions.pyx", line 608, in kivy.graphics.instructions.Canvas.__init__
11-26 00:53:42.845 3852 3852 I python : File "kivy/graphics/instructions.pyx", line 154, in kivy.graphics.instructions.InstructionGroup.__init__
11-26 00:53:42.846 3852 3852 I python : File "kivy/graphics/instructions.pyx", line 60, in kivy.graphics.instructions.Instruction.__init__
11-26 00:53:42.846 3852 3852 I python : TypeError: Cannot create graphics instruction outside the main Kivy thread
...
11-26 00:53:42.855 3852 3933 I python : File "/home/kaushik/PycharmProjects/Tesekkurler/.buildozer/android/platform/build-arm64-v8a_armeabi-v7a/build/python-installs/tesekkurlerapp/arm64-v8a/kivy/clock.py", line 733, in tick
11-26 00:53:42.856 3852 3933 I python : File "/home/kaushik/PycharmProjects/Tesekkurler/.buildozer/android/platform/build-arm64-v8a_armeabi-v7a/build/python-installs/tesekkurlerapp/arm64-v8a/kivy/clock.py", line 776, in post_idle
11-26 00:53:42.856 3852 3933 I python : File "kivy/_clock.pyx", line 620, in kivy._clock.CyClockBase._process_events
11-26 00:53:42.857 3852 3933 I python : File "kivy/_clock.pyx", line 653, in kivy._clock.CyClockBase._process_events
11-26 00:53:42.857 3852 3933 I python : File "kivy/_clock.pyx", line 649, in kivy._clock.CyClockBase._process_events
11-26 00:53:42.858 3852 3933 I python : File "kivy/_clock.pyx", line 218, in kivy._clock.ClockEvent.tick
11-26 00:53:42.859 3852 3933 I python : File "/home/kaushik/PycharmProjects/Tesekkurler/.buildozer/android/platform/build-arm64-v8a_armeabi-v7a/build/python-installs/tesekkurlerapp/arm64-v8a/kivy_garden/mapview/view.py", line 756, in do_update
11-26 00:53:42.859 3852 3933 I python : AttributeError: 'MapCode' object has no attribute '_scatter'
11-26 00:53:42.859 3852 3933 I python : Python for android ended.
# org.kaushik.tesekkurlerapp terminated
When I move the line
app.root.ids.MapCode.center_on(lat, lon)
directly inside the on_start function of main. it works.
Was working with kivymd app in the beginning. Had some issues with it so replaced it with kivy app. but somehow no luck. I also have made changes as per kivy plyer gps not working after update to Android 12
and atleast now my gps works.