Rotate marker as per user direction on Google Maps V2 Android

Question

I want to rotate marker as per bearing or sensor value received from Accelerometer to show the user where actually he is moving. I have set marker icon and flat value to tru

Answer 1

In Kotlin by using Google SphericalUtil class we can get bearing by passing source and destination LatLngs like:

fun calculateBearing(lat1: Double, lng1: Double, lat2: Double, lng2: Double): Float {
        val sourceLatLng = LatLng(lat1, lng1)
        val destinationLatLng = LatLng(lat2, lng2)
        return SphericalUtil.computeHeading(sourceLatLng, destinationLatLng).toFloat()
    }

Then set this result 'bearing` to the marker like

Val bearing  = calculateBearing(lat1, lng1, lat2, lng2)
marker.rotation(bearing)

Reference: https://developers.google.com/maps/documentation/android-sdk/utility/#spherical