Show dividers on menu

By default, the overflow menu does not support dividers between items. To show dividers on the overflow menu, add the following code:

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    override fun onCreateOptionsMenu(menu: Menu?): Boolean {
        val inflater = menuInflater
        inflater.inflate(R.menu.map_options, menu)

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
            menu?.setGroupDividerEnabled(true)
        }

        MenuCompat.setGroupDividerEnabled(menu, true)

        return true
    }

Lines 2~3 inflate the menu, while:

• 5️⃣ - If SDK version supports the divider, enable the .setGroupDividerEnabled
• 9️⃣ - Load MenuCompat to enable compatibility with lower versions of Android

The end result: