Utils for creating spans with minimum texts

Spaniard.kt

package com.spaniard

import android.text.Spannable
import android.text.SpannableStringBuilder
import android.text.style.CharacterStyle

class Spaniard(val originalString: String) {

	var spannableStringBuilder = SpannableStringBuilder(originalString)


	inline fun span(crossinline spanFun: Spaniard.() -> Unit): SpannableStringBuilder {
		spanFun()
		return spannableStringBuilder
	}

	
	fun addSpan(text: String, span: CharacterStyle, flag: Int= Spannable.SPAN_INCLUSIVE_INCLUSIVE) {
		val index = originalString.indexOf(text)
		if (index != -1) {
			spannableStringBuilder.setSpan(span, index, index+text.length, flag)
		}
	}


}



//Example
//Create Spaniard object with whole text and call span
val span: SpannableStringBuilder = Spaniard("Whoa, how this works").span {
	addSpan("Whoa", StyleSpan(Typeface.BOLD), Spannable.SPAN_INCLUSIVE_INCLUSIVE)
	//Spannable.SPAN_INCLUSIVE_INCLUSIVE is default so you can omit it
	addSpan("how this",ForegroundColorSpan(ContextCompat.getColor(WhateverContextAvailable, R.color.colorPrimaryDark)))
	//Or you can pass something else 
	addSpan("works", StrikethroughSpan(), Spannable.SPAN_EXCLUSIVE_INCLUSIVE)
	//This does nothing as there is no such text above
	addSpan("Prasham",TextAppearanceSpan(WhateverContextAvailable, R.style.TextAppearance_AppCompat_Body2),
					Spannable.SPAN_INCLUSIVE_INCLUSIVE)
	//BTW These flags only matter to EditText and specially while editing the text
	//In TextView flags are not doing anything. 
	//Read more at
	//https://stackoverflow.com/questions/9879233/explain-the-meaning-of-span-flags-like-span-exclusive-exclusive
}
//now on your textview set span and you're ready to go 

How to use
Step 1: Create Spaniard object and pass full String in constructor
Step 2: call span() method on obect
Step 3: in Span method , call addSpan() methods, pass your desired chunk of full string and Span you want to apply.
Step 4: return value of span method is raw spannable string builder. Which you can use for fun, profit and anything. Like setting a final text.

Thanks