feat: transit layer support

Author: pinpong

android/src/main/java/com/rngooglemapsplus/GoogleMapsViewImpl.kt

@@ -236,6 +236,7 @@ class GoogleMapsViewImpl(
     buildingEnabled = buildingEnabled
     trafficEnabled = trafficEnabled
     indoorEnabled = indoorEnabled
+    transitEnabled = transitEnabled
     customMapStyle = customMapStyle
     mapType = mapType
     userInterfaceStyle = userInterfaceStyle
@@ -332,6 +333,12 @@ class GoogleMapsViewImpl(
       onUi { googleMap?.isIndoorEnabled = value ?: false }
     }
 
+  var transitEnabled: Boolean? = null
+    set(value) {
+      field = value
+      onUi { googleMap?.isTransitEnabled = value ?: false }
+    }
+
   var customMapStyle: MapStyleOptions? = null
     set(value) {
       field = value
@@ -834,6 +841,7 @@ class GoogleMapsViewImpl(
         setInfoWindowAdapter(null)
         isTrafficEnabled = false
         isIndoorEnabled = false
+        isTransitEnabled = false
         myLocationEnabled = false
         setLocationSource(null)
         setLatLngBoundsForCameraTarget(null)

android/src/main/java/com/rngooglemapsplus/RNGoogleMapsPlusView.kt

@@ -90,6 +90,13 @@ class RNGoogleMapsPlusView(
       view.indoorEnabled = value
     }
 
+  override var transitEnabled: Boolean? = null
+    set(value) {
+      if (field == value) return
+      field = value
+      view.transitEnabled = value
+    }
+
   override var customMapStyle: String? = null
     set(value) {
       if (field == value) return

ios/GoogleMapViewImpl.swift

@@ -132,6 +132,7 @@ GMSIndoorDisplayDelegate {
     ({ self.buildingEnabled = self.buildingEnabled })()
     ({ self.trafficEnabled = self.trafficEnabled })()
     ({ self.indoorEnabled = self.indoorEnabled })()
+    ({ self.transitEnabled = self.transitEnabled })()
     ({ self.customMapStyle = self.customMapStyle })()
     ({ self.mapType = self.mapType })()
     ({ self.userInterfaceStyle = self.userInterfaceStyle })()
@@ -247,6 +248,14 @@ GMSIndoorDisplayDelegate {
     }
   }
 
+  var transitEnabled: Bool? {
+    didSet {
+      onMain {
+        self.mapView?.isTransitEnabled = self.transitEnabled ?? false
+      }
+    }
+  }
+
   var customMapStyle: GMSMapStyle? {
     didSet {
       onMain {
@@ -772,6 +781,7 @@ GMSIndoorDisplayDelegate {
       self.mapView?.clear()
       self.mapView?.isTrafficEnabled = false
       self.mapView?.isIndoorEnabled = false
+      self.mapView?.isTransitEnabled = false
       self.mapView?.isMyLocationEnabled = false
       self.mapView?.cameraTargetBounds = nil
       self.mapView?.layer.removeAllAnimations()

ios/RNGoogleMapsPlusView.swift

@@ -70,6 +70,10 @@ final class RNGoogleMapsPlusView: HybridRNGoogleMapsPlusViewSpec {
     didSet { impl.indoorEnabled = indoorEnabled }
   }
 
+  var transitEnabled: Bool? {
+    didSet { impl.transitEnabled = transitEnabled }
+  }
+
   var customMapStyle: String? {
     didSet {
       if let value = customMapStyle {