SpannableUtils allows you to format a different part of a text

CustomTypefaceSpan.java

import android.graphics.Paint;
import android.graphics.Typeface;
import android.text.TextPaint;
import android.text.style.TypefaceSpan;

public class CustomTypefaceSpan extends TypefaceSpan {
    private final Typeface newType;

    public CustomTypefaceSpan(String family, Typeface type) {
        super(family);
        newType = type;
    }

    @Override
    public void updateDrawState(TextPaint ds) {
        applyCustomTypeFace(ds, newType);
    }

    @Override
    public void updateMeasureState(TextPaint paint) {
        applyCustomTypeFace(paint, newType);
    }

    private static void applyCustomTypeFace(Paint paint, Typeface tf) {
        int oldStyle;
        final Typeface old = paint.getTypeface();
        if (old == null) {
            oldStyle = 0;
        } else {
            oldStyle = old.getStyle();
        }

        final int fake = oldStyle & ~tf.getStyle();
        if ((fake & Typeface.BOLD) != 0) {
            paint.setFakeBoldText(true);
        }

        if ((fake & Typeface.ITALIC) != 0) {
            paint.setTextSkewX(-0.25f);
        }

        paint.setTypeface(tf);
    }
}

SpannableUtils.java

import android.content.Context;
import android.graphics.Typeface;
import android.support.annotation.ColorRes;
import android.support.annotation.FontRes;
import android.support.annotation.StringRes;
import android.support.v4.content.res.ResourcesCompat;
import android.text.Spannable;
import android.text.SpannableString;
import android.text.Spanned;
import android.text.TextPaint;
import android.text.style.AbsoluteSizeSpan;
import android.text.style.ClickableSpan;
import android.text.style.ForegroundColorSpan;
import android.text.style.TypefaceSpan;
import android.view.View;

public class SpannableUtils {
    private final Context context;
    private final int messageRes;
    private final String partText;
    private int generalFontRes;
    private int partFontRes;
    private int generalColor;
    private int partColor;
    private int generalTextSize;
    private int partTextSize;
    private int includeLeft;
    private int skipRight;
    private View.OnClickListener partClickListener;

    public SpannableUtils(Context context, @StringRes int messageRes, String partText) {
        this.context = context;
        this.messageRes = messageRes;
        this.partText = partText;
    }

    public SpannableUtils generalFont(@FontRes int generalFontRes) {
        this.generalFontRes = generalFontRes;
        return this;
    }

    public SpannableUtils partFont(@FontRes int partFontRes) {
        this.partFontRes = partFontRes;
        return this;
    }

    public SpannableUtils generalColor(@ColorRes int generalColor) {
        this.generalColor = generalColor;
        return this;
    }

    public SpannableUtils partColor(@ColorRes int partColor) {
        this.partColor = partColor;
        return this;
    }

    public SpannableUtils partClickListener(View.OnClickListener partClickListener) {
        this.partClickListener = partClickListener;
        return this;
    }

    public SpannableUtils generalTextSize(int generalTextSize) {
        this.generalTextSize = generalTextSize;
        return this;
    }

    public SpannableUtils partTextSize(int partTextSize) {
        this.partTextSize = partTextSize;
        return this;
    }

    public SpannableUtils includeLeft(int includeLeft) {
        this.includeLeft = includeLeft;
        return this;
    }

    public SpannableUtils skipRight(int skipRight) {
        this.skipRight = skipRight;
        return this;
    }

    public Spannable build() {
        final String message = context.getString(messageRes, partText);
        final int startPartText = message.length() - partText.length() - includeLeft;
        final int endPartText = message.length() - skipRight;
        final Spannable contentSpannable = new SpannableString(message);

        if (partClickListener != null) {
            final ClickableSpan clickableSpan = new ClickableSpan() {
                @Override
                public void onClick(View textView) {
                    partClickListener.onClick(textView);
                }

                @Override
                public void updateDrawState(TextPaint ds) {
                    super.updateDrawState(ds);
                    ds.setUnderlineText(false);
                }
            };
            contentSpannable.setSpan(clickableSpan, startPartText, endPartText, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
        }

        if (generalFontRes != 0 && partFontRes != 0) {
            final Typeface generalFont = ResourcesCompat.getFont(context, generalFontRes);
            final Typeface partFont = ResourcesCompat.getFont(context, partFontRes);
            final TypefaceSpan generalFontSpan = new CustomTypefaceSpan("", generalFont);
            final TypefaceSpan partFontSpan = new CustomTypefaceSpan("", partFont);
            contentSpannable.setSpan(generalFontSpan, 0, startPartText - 1, Spannable.SPAN_INCLUSIVE_INCLUSIVE);
            contentSpannable.setSpan(partFontSpan, startPartText, endPartText, Spannable.SPAN_INCLUSIVE_INCLUSIVE);
        } else if (generalFontRes != 0) {
            final Typeface generalFont = ResourcesCompat.getFont(context, generalFontRes);
            final TypefaceSpan generalFontSpan = new CustomTypefaceSpan("", generalFont);
            contentSpannable.setSpan(generalFontSpan, 0, startPartText - 1, Spannable.SPAN_INCLUSIVE_INCLUSIVE);
        }

        if (generalColor != 0) {
            contentSpannable.setSpan(new ForegroundColorSpan(context.getResources().getColor(generalColor)),
                    0, startPartText - 1, Spannable.SPAN_INCLUSIVE_INCLUSIVE);
            contentSpannable.setSpan(new ForegroundColorSpan(context.getResources().getColor(partColor)),
                    startPartText, endPartText, Spannable.SPAN_INCLUSIVE_INCLUSIVE);
        }

        if (generalTextSize != 0) {
            contentSpannable.setSpan(new AbsoluteSizeSpan(generalTextSize, true),
                    0, startPartText - 1, Spannable.SPAN_INCLUSIVE_INCLUSIVE);
            contentSpannable.setSpan(new AbsoluteSizeSpan(partTextSize, true),
                    startPartText, endPartText, Spannable.SPAN_INCLUSIVE_INCLUSIVE);
        }

        return contentSpannable;
    }
}