How to search for a word in a string and highlight word in a text view in android?

Question

in my android application i have a string that contains a specific word so i want to display whole string in text view and the specific word should be highlighted.Hope follo

Answer 1

Just to make it simple, here I post my methode

. . . . . . . .

First getting ready to use the methode

    ArrayList searchWords = new ArrayList(Arrays.asList("Second", "Scottish", "forces", "England"));

    String text = "1333 – Second War of Scottish Independence: The Scottish-held town of Berwick-upon-Tweed surrendered to English forces, ending a siege led by Edward III of England (depicted).";


    TextView sampleTextView = new TextView(currentContext); // currentContext = getContext();

    if (searchWords != null) {
        Spannable newText = setSpanHighlight(text, searchWords);
        sampleTextView.setText(newText, TextView.BufferType.SPANNABLE);
    }
    else{
        sampleTextView.setText(text);
    }

The methode

    private Spannable setSpanHighlight(String text, @NonNull ArrayList searchWord) {
    Spannable newText = new SpannableString(text);

    if (searchWord.size() != 0) {
        for (String word : searchWord){
            if (text.contains(word)){
                int beginIndex = text.indexOf(String.valueOf(word)); //Unnecessary 'String.valueOf()' call => if you have something else than String
                int endIndex = beginIndex + word.length();

                newText.setSpan(
                        new ForegroundColorSpan(Color.BLUE),
                        beginIndex,
                        endIndex,
                        Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
            }
        }
    }
    return newText;
}