I have a String of sentence and a list of words that need to be highlighted if there is an occurrence in that String. How do I do that

Question

I have a String of sentence and a list of words that need to be highlighted if there is an occurrence in that String. How do I do that?

Pr38y · Answer 1 · 2017-04-12T17:49:34.023

0

You can use Html.

 for(String word: listString){
           if(sentence.contains(word){
              sentence = sentence.replace(word,"<font color='red'>"+word+"</font>");
           }
     }
 mTextView.setText(Html.fromHtml(sentence));

edited Apr 12 '17 at 17:49

answered Apr 12 '17 at 17:01

Pr38y

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The final string is highlighting only the word from last item in list. – roshanthejoker Apr 12 '17 at 17:45
my mistake. string is immutable class. – Pr38y Apr 12 '17 at 17:50
So do I save the result in each iteration? – roshanthejoker Apr 12 '17 at 17:54
no.. each iteration will give the result of updated value. until all iterations are done you won't get final result. I have updated the code, use the same. – Pr38y Apr 13 '17 at 06:38

score 0 · Answer 2 · answered Apr 13 '17 at 06:54

I managed to do it with SpannableStringBuilder.

Here's the code:

@Override
public void renderFinalTranscript(final String transcript, String filler)

 {

getActivity().runOnUiThread(() -> {
   final Pattern p = Pattern.compile(filler);
   final Matcher matcher = p.matcher(transcript);

   SpannableStringBuilder sb = new SpannableStringBuilder(transcript);

   while(matcher.find()){
   sb.setSpan(CharacterStyle.wrap(new ForegroundColorSpan(Color.RED)), matcher.start(), matcher.end(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
   }
    transcribeText.append(spanny);
});
}

I called this method in a for loop and got the intended result

I have a String of sentence and a list of words that need to be highlighted if there is an occurrence in that String. How do I do that

2 Answers2