How to set different color & size for numbers and characters of a string

Question

I receive a dynamic string from a web service and it contains numbers and characters.

Examples

Distance is 5000 mph

Arrival in 2 hours & 40 minutes

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I want a different color - fontype - size for both the numbers and the charcters. I know how to use Spannable for a string, but I must know the start and end index for each which I don't because the string is dynamic.!

Is there a way to achieve this?

Answer 1

Here you can use the below code to find out all the numbers from your string in an array and by using it you can customize it-

private fun getNumbers(string:String){
        val p = Pattern.compile("-?\\d+(,\\d+)*?\\.?\\d+?")
        val numbers: MutableList<String> = ArrayList()
        val m: Matcher =
            p.matcher(string)
        while (m.find()) {
            numbers.add(m.group())

        }
        println(numbers)
    }

If the string is Arrival in 2 hours & 40 minutes then this function will return you - [2,40] as the end result.