_.kt

private fun highlight() {
  val s = etSearchBar.text
  adapter.list.forEach { item ->

    // {1} 
    item.abbr.getSpans(0, item.abbr.length, ForegroundColorSpan::class.java).forEach {
        item.abbr.removeSpan(it)
    }

    // {2} 
    item.name.getSpans(0, item.name.length, ForegroundColorSpan::class.java).forEach {
        item.name.removeSpan(it)
    }

    // {3}
    if (item.abbr.startsWith(s, true)) {
        item.abbr.setSpan(spanHighlight, 0, s.length, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE)
    }

    // {4}
    if (item.name.contains(s, true)) {
        val index = item.name.toString().indexOf(s.toString(), 0, true)
        item.name.setSpan(spanHighlight, index, index + s.length, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE)
    }
  }
}