how to set white color to any letter in TextView except numbers and commas in android?

user12033682 :

I want to set white color to any letter in TextView except numbers and commas and Then I want to set the color of other charactors to White . How can I do it ?

Example

19,319,931 coins
//19,319,931 should has yellow color.
//coins should has has white color

Alireza Bideli :

You can use Spannable TextView

A spannable TextView can be used in Android to highlight a particular portion of text with a different color, style, size, and/or click event in a single TextView widget.

So Try this :

    String coinText = txtDiamonds.getText().toString();
    char currentChar;
    Spannable spannable = new SpannableString(coinText);
    ForegroundColorSpan color;
    for (int i = 0; i < coinText.length(); i++) {
        currentChar = coinText.charAt(i);
        if (Character.isDigit(currentChar) || ((int) currentChar) == ((int) ','))
            color = new ForegroundColorSpan(Color.YELLOW);
        else
            color = new ForegroundColorSpan(Color.WHITE);
        spannable.setSpan(color, i, i + 1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
    }
    txtDiamonds.setText(spannable);

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