Question

String highlightedWords[] = {"We", "country"};

String full_text = "We love our country a lot. Our country is very good.";

textview.setText(full_text);

输出：我们非常喜欢我们的国家/地区。我们的国家非常好。

如何在SpannableString中突出显示这些单词

Answer 1

您可以达到以下相同的目标

 //Create new list
    ArrayList<String> mList = new ArrayList<>();
    //Words to split
    String words[] = {"We", "country"};
    //main string
    String full_text = "We love our country a lot.";
    //split strings by space
    String[] splittedWords = full_text.split(" ");
    SpannableString str=new SpannableString(full_text);
    //Check the matching words
    for (int i = 0; i < words.length; i++) {
      for (int j = 0; j < splittedWords.length; j++) {
        if (words[i].equalsIgnoreCase(splittedWords[j])) {
          mList.add(words[i]);
        }
      }
    }
    //make the words bold
    for (int k = 0; k < mList.size(); k++) {
      int val = full_text.indexOf(mList.get(k));
      str.setSpan(new StyleSpan(Typeface.BOLD), val, val + mList.get(k).length(),
          Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
    }
//set text
    ((TextView)findViewById(R.id.tvSample)).setText(str);

Answer 2

最适合我的解决方案，也是最优雅的解决方案

ArrayList<String> wordsToHighlight = new ArrayList<>(Arrays.asList("We", "country");
String fullText = "We love our country a lot. Our country is very good.";
SpannableString spannableString = new SpannableString(fullText);

ArrayList<String> brokenDownFullText = new ArrayList<>(Arrays.asList(fullText.split(" ")));
brokenDownFullText.retainAll(wordsToHighlight);
for (String word : brokenDownFullText) {
   int indexOfWord = fullText.indexOf(word);
   spannableString.setSpan(new StyleSpan(Typeface.BOLD), indexOfKeyword, indexOfKeyword + word.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}

textView.setText(spannableString);

Android Textview突出显示多个单词

2 个答案: