Bold words in a string of strings.xml in Android

     Normally use html tags in the string resource like below,

<resource>
   <string name="styled_welcome_message">We are <b><i>so</i></b> glad to see you.</string>
</resources>

     Also use Html.fromHtml else use spannable.

     Try the given codes that uses html tag inside string resources,

<resources>
<string name="string_resource_name"><![CDATA[<b> Your text </b>]]> </string>
</resources>

     Get bold text from string resources like,

private Spanned getSpannedText(String text) {
     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
        return Html.fromHtml(text, Html.FROM_HTML_MODE_COMPACT);
     } else {
        return Html.fromHtml(text);
     }
  }
String s = format(context.getResources().getString(R.string.string_resource_name));
textView.setText(getSpannedText(s));

Use the HTML in string resources:

<resource>
   <string name="my_string">A string with <i>actual</i> <b>formatting</b>!</string>
</resources>

     Later use the getText(R.string.my_string) method alternative to getString(R.string.my_string), then user may get back a CharSequence alternative than a string which consists the formatting embedded.

<resource>
    <string name="styled_welcome_message">We are <b><i>so</i></b> glad to see you.</string>
</resources>

private Spanned getSpannedText(String text) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
            return Html.fromHtml(text, Html.FROM_HTML_MODE_COMPACT);
        } else {
            return Html.fromHtml(text);
        }
    }


 String s = format(context.getResources().getString(R.string.string_resource_name));
 textView.setText(getSpannedText(s));

<resources xmlns:tools="http://schemas.android.com/tools">

 <string name="total_review"><b>Total Review: </b> </string>

 </resources>