Android 更改文本视图中特定单词的文本背景色

我想更改

TextView

中特定单词的背景色：

如下图所示

试试这个

String str = "Some really long string goes in here";
Spannable spannable = new SpannableString(str);
spannable.setSpan(new BackgroundColorSpan(
  getResources().getColor(android.R.color.black)
), 0, str.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
yourTextView.setText(spannable);

看到这个了吗

什么是Spanable？它是如何工作的？ 将指定的标记对象附加到文本的开始…结束区域，或者如果对象已附加到其他位置，则将其移动到该区域。 有关更多详细信息，请您检查并了解如何要求开始和结束编号（如中的anser 3和7）

更新

请使用此工作代码

String mainString = "As Soon As";
String subString = "Soon";

if(mainString.contains(subString)) {
      int startIndex = mainString.indexOf(subString);
      int endIndex = startIndex + subString.length();
      SpannableString spannableString = new SpannableString(mainString);
      spannableString.setSpan(new BackgroundColorSpan(Color.parseColor("#ff0000")), startIndex, endIndex,
      Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
      textView.setText(spannableString);
}

---

以下是我的工作代码，可用于突出显示字符串的某些部分：

     private void highlightTextPart(TextView textView, int index, String regularExpression) {
        String fullText = textView.getText().toString();
        int startPos = 0;
        int endPos = fullText.length();
        String[] textParts = fullText.split(regularExpression);
        if (index < 0 || index > textParts.length - 1) {
            return;
        }
        if (textParts.length > 1) {
            startPos = fullText.indexOf(textParts[index]);
            endPos = fullText.indexOf(regularExpression, startPos);
            if (endPos == -1) {
                endPos = fullText.length();
            }
        }
        Spannable spannable = new SpannableString(fullText);
        ColorStateList blueColor = new ColorStateList(new int[][] { new int[] {}}, new int[] { Color.BLUE });
        TextAppearanceSpan textAppearanceSpan = new TextAppearanceSpan(null, Typeface.BOLD_ITALIC, -1, blueColor, null);
        BackgroundColorSpan backgroundColorSpan = new BackgroundColorSpan(Color.GREEN);
        spannable.setSpan(textAppearanceSpan, startPos, endPos, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
        spannable.setSpan(backgroundColorSpan, startPos, endPos, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
        textView.setText(spannable);
    }

---

在textview Android中更改特定单词的文本背景颜色的简单且最佳的方法

TextView txtMessage=findviewbyd（R.id.TextView\u msg）；
String text=“你好，世界！”；
字符串搜索\u term=“Hello”；
if（Build.VERSION.SDK\u INT>=Build.VERSION\u code.N）
{
字符串newString=text.replaceAll（搜索词“+”搜索词+”）；
txtMessage.setText（Html.fromHtml（newString
，HtmlCompat.FROM_HTML_MODE_LEGACY））；
}
其他的
{
字符串newString=text.replaceAll（搜索词“+”搜索词+”）；
setText（Html.fromHtml（newString））；
}

我想用字符串Def=rush_searh.getDefinition（）等特定单词进行更改。替换（“很快”、“很快”）；tv_term.setText（Html.fromHtml（Def））；@muzamilsiddiq。为此，您必须使用2或3个不同的文本视图并设置特定文本视图的背景色。我想用字符串Def=rush_searh.getDefinition等特定单词进行更改（）.replace（“Soon”、“Soon”）；tv_term.setText（Html.fromHtml（Def））；@nitimesta在代码的顶部，我认为toolBarSpan将被替换为spannableString。因为您在任何软件上都没有声明toolBarSpan。

     private void highlightTextPart(TextView textView, int index, String regularExpression) {
        String fullText = textView.getText().toString();
        int startPos = 0;
        int endPos = fullText.length();
        String[] textParts = fullText.split(regularExpression);
        if (index < 0 || index > textParts.length - 1) {
            return;
        }
        if (textParts.length > 1) {
            startPos = fullText.indexOf(textParts[index]);
            endPos = fullText.indexOf(regularExpression, startPos);
            if (endPos == -1) {
                endPos = fullText.length();
            }
        }
        Spannable spannable = new SpannableString(fullText);
        ColorStateList blueColor = new ColorStateList(new int[][] { new int[] {}}, new int[] { Color.BLUE });
        TextAppearanceSpan textAppearanceSpan = new TextAppearanceSpan(null, Typeface.BOLD_ITALIC, -1, blueColor, null);
        BackgroundColorSpan backgroundColorSpan = new BackgroundColorSpan(Color.GREEN);
        spannable.setSpan(textAppearanceSpan, startPos, endPos, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
        spannable.setSpan(backgroundColorSpan, startPos, endPos, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
        textView.setText(spannable);
    }

    int index = 3;
    String regularExpression = " ";
    String text = "Hello StackOverflow From BNK!";
    TextView textView = (TextView) findViewById(R.id.textView);
    if (textView != null) {
        textView.setText(text);
        highlightTextPart(textView, index, regularExpression);
    }

TextView txtMessage=findViewById(R.id.textview_msg);
String text="Hello World!";
String search_term="Hello";
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N)
{
  String newString = text.replaceAll(search_term, "<span style='background:
  yellow;'>"+search_term+"</span>");          
  txtMessage.setText(Html.fromHtml(newString
  ,HtmlCompat.FROM_HTML_MODE_LEGACY));
}
else 
{
  String newString = text.replaceAll(search_term, "<font 
  color='#f3f402'>"+search_term+"</font>"); 
  txtMessage.setText(Html.fromHtml(newString));
}