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android – Set different font and color to part of a TextView

Posted by: admin June 15, 2020 Leave a comment

Questions:

I tried this:

String s = "Some big string"
SpannableStringBuilder sb = new SpannableStringBuilder(s);
//normal font for 1st 9 chars
sb.setSpan(robotoRegular, 0,9,Spannable.SPAN_INCLUSIVE_INCLUSIVE);
//bold font for rest of the chars
sb.setSpan(robotoBold, 9,s.length(),Spannable.SPAN_INCLUSIVE_INCLUSIVE);
//also change color for rest of the chars
sb.setSpan(new ForegroundColorSpan(Color.BLACK), 9,s.length(),Spannable.SPAN_INCLUSIVE_INCLUSIVE);
textView.setText(sb);

But this didn’t work.

It only takes the latest setSpan, ie.., the Text color is being changed but not the font.

How to&Answers:

You have to use a TypefaceSpan instead of a Typeface.

But since you are using a custom typeface you need to extend TypefaceSpan.

Check out this answer and create CustomTypefaceSpan class.

Now do the following:

Typeface robotoRegular = Typeface.createFromAsset(getAssets(), "fonts/Roboto-Regular.ttf");
Typeface robotoBold = Typeface.createFromAsset(getAssets(), "fonts/Roboto-Bold.ttf");

TypefaceSpan robotoRegularSpan = new CustomTypefaceSpan("", robotoRegular);
TypefaceSpan robotoBoldSpan = new CustomTypefaceSpan("", robotoBold);

// normal font for 1st 9 chars
sb.setSpan(robotoRegularSpan, 0, 9, Spannable.SPAN_INCLUSIVE_INCLUSIVE);
// bold font for rest of the chars
sb.setSpan(robotoBoldSpan, 9, s.length(), Spannable.SPAN_INCLUSIVE_INCLUSIVE);
// also change color for rest of the chars
sb.setSpan(new ForegroundColorSpan(Color.BLUE), 9, s.length(), Spannable.SPAN_INCLUSIVE_INCLUSIVE);
textView.setText(sb);

Answer:

For peaple who prefer to make utils classes for this:

public static SpannableStringBuilder makeTextBold (Activity activity, String string, int fromCharIndex, int toCharIndex) {
    return makeTextBold(activity, new SpannableStringBuilder(string), fromCharIndex, toCharIndex);
}

public static SpannableStringBuilder makeTextBold (Activity activity, SpannableStringBuilder string, int fromCharIndex, int toCharIndex) {
    SpannableStringBuilder sb = new SpannableStringBuilder(string);
    Typeface bold = Typeface.createFromAsset(activity.getAssets(), "fonts/NexaBold.ttf");
    TypefaceSpan robotoBoldSpan = new CustomTypefaceSpan("", bold);
    sb.setSpan(robotoBoldSpan, fromCharIndex, toCharIndex, Spannable.SPAN_INCLUSIVE_INCLUSIVE);
    return sb;
}

public static SpannableStringBuilder colorText (int resourceId, String string, Activity activity, int fromCharIndex, int toCharIndex) {
    return colorText(resourceId, new SpannableStringBuilder(string), activity, fromCharIndex, toCharIndex);
}

public static SpannableStringBuilder colorText (int resourceId, SpannableStringBuilder sb, Activity activity, int fromCharIndex, int toCharIndex) {
    sb.setSpan(new ForegroundColorSpan(activity.getResources().getColor(resourceId)), fromCharIndex, toCharIndex, Spannable.SPAN_INCLUSIVE_INCLUSIVE);
    return sb;
}

Answer:

check this code :-

protected void onDraw(Canvas canvas) {

        Paint circlePaint = new Paint();
        Typeface mType = Typeface.create(Typeface.SANS_SERIF, Typeface.ITALIC);
        circlePaint.setTextSize(25);
        circlePaint.setColor(Color.RED);
        circlePaint.setTypeface(mType);
        canvas.drawText("Default Typeface", 50, 100, circlePaint);
        //
        circlePaint.setFlags(Paint.UNDERLINE_TEXT_FLAG);
        circlePaint.setColor(Color.YELLOW);
        canvas.drawText("Underline Text Flag", 50, 120, circlePaint);
        //
        circlePaint.setFlags(Paint.STRIKE_THRU_TEXT_FLAG);
        circlePaint.setColor(Color.GREEN);
        canvas.drawText("Strike Thru Text Flag", 50, 140, circlePaint);
        //
        circlePaint.setFlags(Paint.ANTI_ALIAS_FLAG);
        circlePaint.setColor(Color.WHITE);
        canvas.drawText("Anti Alias Flag", 50, 160, circlePaint);
        //
        circlePaint.setFlags(Paint.DEV_KERN_TEXT_FLAG);
        circlePaint.setColor(Color.WHITE);
        canvas.drawText("Dev Kern Text Flag", 50, 180, circlePaint);
        //
        circlePaint.setFlags(Paint.FAKE_BOLD_TEXT_FLAG);
        circlePaint.setColor(Color.CYAN);
        canvas.drawText("Fake Bold Text Flag", 50, 200, circlePaint);
    }