Change color of words in the middle of a text.

SpannableStringColor.java

import android.text.Spannable;
import android.text.SpannableStringBuilder;
import android.text.style.ForegroundColorSpan;

public class SpannableStringColor {

    private final String text;
    private final Spannable colorizedString;

    public SpannableStringColor(String text) {
        this.text = text;
        this.colorizedString = new SpannableStringBuilder(text);
    }

    private SpannableStringColor(Spannable spannableString, String text) {
        this.text = text;
        this.colorizedString = spannableString;
    }

    public Spannable colorizeAll(int color, String... texts) {
        for(String word : texts) {
            int start = this.text.indexOf(word);
            if (start > -1) {
                colorizedString.setSpan(new ForegroundColorSpan(color), start, start + word.length(),
                        Spannable.SPAN_INCLUSIVE_INCLUSIVE);
            }
        }
        return colorizedString;
    }

    public SpannableStringColor colorize(int color, String word) {
            int start = this.text.indexOf(word);
            if (start > -1) {
                colorizedString.setSpan(new ForegroundColorSpan(color), start, start + word.length(),
                        Spannable.SPAN_INCLUSIVE_INCLUSIVE);
            }
        return new SpannableStringColor(colorizedString, text);
    }

    public Spannable toSpan() {
        return colorizedString;
    }
}

Usage:

You can have each word with a color:

String text = "This is a multi colored text";
int red = getResources().getColor(android.R.color.holo_red_light);
int blue = getResources().getColor(android.R.color.holo_blue_bright);
int green = getResources().getColor(android.R.color.holo_green_light);

Spannable colorizedText = new SpannableStringColor(text)
.colorize(green, "multi")
.colorize(red, "colored")
.colorize(blue, "text")
.toSpan();

textview.setText(colorizedText);

Or you can add the same color to all the words:
String text = "This is a multi colored text";

Spannable colorizedSubtitle = new SpannableStringColor(text)
.colorizeAll(orange, "multi", "colored", "text");

textview.setText(colorizedText);