two screens, one of them with a map that has a centered marker on it

flockompass.kv

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+#:import random random.random
+#:import RiseInTransition kivy.uix.screenmanager.RiseInTransition
+
+<MapScreen>:
+    BoxLayout:
+        Button:
+            text: 'Goto settings'
+            on_press: root.manager.current = 'compass'
+
+        MapView:
+            id: mapview
+            lat: 28.89335172
+            lon: 76.59449171
+            zoom: 15
+
+            on_map_relocated: centermark.lat = mapview.lat; centermark.lon = mapview.lon
+            
+            MapMarker:
+                id: centermark    
+                anchor_x: 0.2
+                anchor_y: 0.3
+                lat: 28.89335172
+                lon: 76.59449171
+                
+
+
+<CompassScreen>:
+    BoxLayout:
+        Button:
+            text: 'My settings button'
+        Button:
+            text: 'Back to menu'
+            on_press: root.manager.current = 'map'

main.py

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+from kivy.app import App
+from kivy.uix.screenmanager import ScreenManager, Screen, RiseInTransition
+from kivy.properties import NumericProperty
+from kivy.lang import Builder
+from kivy_garden.mapview import MapView
+
+        
+class MapScreen(Screen):
+    hue = NumericProperty(0)
+    mapview = MapView(zoom=11, lat=50.6394, lon=3.057)
+
+    
+class CompassScreen(Screen):
+    hue = NumericProperty(0)
+
+    
+class FlockompassApp(App):
+
+    def build(self):
+        
+        root = ScreenManager(transition=RiseInTransition())
+        root.add_widget(MapScreen(name='map'))
+        root.add_widget(CompassScreen(name='compass'))
+        
+        return root
+
+
+if __name__ == '__main__':
+    FlockompassApp().run()
+
+
+
+
+        # Button:
+        #     text: 'Use FallOutTransition'
+        #     on_release: root.manager.transition = FallOutTransition()
+
+        # Button:
+        #     text: 'Use RiseInTransition'
+        #     on_release: root.manager.transition = RiseInTransition()
+