Can someone explain how to change marker icon with kotlin

litoo00 · September 30, 2019, 5:46pm

Been trying to change marker icon on the map with kotlin. but it always not able to use the Drawable resource. always says that it is expecting ICON but I gave drawable !! and I have no other choice than sending Drawable to it !!

szczepam · October 7, 2019, 6:15am

If you have a typical image file (png for example) in your drawable folder, you can use Icon.Factory.fromResources function:

tomtomMap.addMarker(MarkerBuilder(latLng)
    .icon(Icon.Factory.fromResources(this, R.drawable.pin)))

If your image is defined as an android vector drawable, you can create a BitmapDrawable from it and use it inside Icon.Factory.fromDrawable function:

val drawable = this.resources.getDrawable(R.drawable.marker, theme)

val bitmap = Bitmap.createBitmap(
    drawable.intrinsicWidth,
    drawable.intrinsicHeight,
    Bitmap.Config.ARGB_8888
)

val canvas = Canvas(bitmap)
drawable.setBounds(0, 0, canvas.width, canvas.height)
drawable.draw(canvas)

val bitmapDrawable = BitmapDrawable(this.resources, bitmap)

tomtomMap.addMarker(MarkerBuilder(latLng)
    .icon(Icon.Factory.fromDrawable("name", bitmapDrawable)))