SpannableStringBuilder to create String with multiple fonts/text sizes etc Example?

Question

I need to create a String placed in a TextView that will display a string like this:

First Part Not Bold BOLD rest not bold

So I want to know how I could use SpannableStringBuilder to do this?

I could use three TextEdit to accomplish this but I would like to use best solution.

Answer 1

First Part Not Bold   BOLD  rest not bold 

You can do this either as @Rajesh suggested or by this.

String normalBefore= "First Part Not Bold "; String normalBOLD=  "BOLD "; String normalAfter= "rest not bold"; String finalString= normalBefore+normalBOLD+normalAfter; Spannable sb = new SpannableString( finalString ); sb.setSpan(new StyleSpan(android.graphics.Typeface.BOLD), finalString.indexOf(normalBOLD)+ normalBOLD.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); //bold sb.setSpan(new AbsoluteSizeSpan(intSize), finalString.indexOf(normalBOLD)+ normalBOLD.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);//resize size 

to show this in TextView

textview.setText(sb,  TextView.BufferType.SPANNABLE); 

Answer 2

The accepted answer is fine (and I upvoted it), but it fails to use the SpannableStringBuilder as the submitter requested. As I had a case where the Builder made the most sense, here is the code for that (with a bonus use of also changing the color of the text if that is helpful to others). Note that you could also provide the initial string to the SpannableStringBuilder constructor, but I set it here to use "append" to be clear that you can append a lot before your desired "bold" text and then just record the start as shown. I would suspect that this is also faster code than the accepted answer.

SpannableStringBuilder longDescription = new SpannableStringBuilder(); longDescription.append("First Part Not Bold "); int start = longDescription.length(); longDescription.append("BOLD"); longDescription.setSpan(new ForegroundColorSpan(0xFFCC5500), start, longDescription.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); longDescription.setSpan(new StyleSpan(android.graphics.Typeface.BOLD), start, longDescription.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); longDescription.append(" rest not bold");