How to bold specific word in listview android

Question

I'm trying to bold the specific text in listview that contains ":". I want to bold the word underlined in the image below that contains ":" but I'm having trouble getting all the message. Please see my current code below. I appreciate for your any response.

ArrayList<String> list_items = new ArrayList<String>();
public  void listview_refresh(){
    arrayAdapter = new ArrayAdapter(this,android.R.layout.simple_list_item_1, list_items);

    ContentResolver cResolver = getContentResolver();
    Cursor smsInboxCursor = cResolver.query(Uri.parse("content://sms/inbox"),null,null,null,"date desc");
    int indexBody = smsInboxCursor.getColumnIndex("body");
    if (indexBody < 0 || !smsInboxCursor.moveToFirst()) return;
    do{
        str = smsInboxCursor.getString(indexBody) ;
        arrayAdapter.add(str);

        String[] separated = str.split(":");
        String separate = separated[1];

        arrayAdapter.replaceAll(separate, "<b>" + separate + "</b>"); //errorline

    }while (smsInboxCursor.moveToNext());
}

Answer 1

Add string as Html within the adapter list. I have modified your code and added Html.fromHtml(..) to make text to use HTML code within.

ArrayList<String> list_items = new ArrayList<String>();
public  void listview_refresh(){
arrayAdapter = new ArrayAdapter(this,android.R.layout.simple_list_item_1, list_items);

ContentResolver cResolver = getContentResolver();
Cursor smsInboxCursor = cResolver.query(Uri.parse("content://sms/inbox"),null,null,null,"date desc");
int indexBody = smsInboxCursor.getColumnIndex("body");
if (indexBody < 0 || !smsInboxCursor.moveToFirst()) return;
do{
    str = smsInboxCursor.getString(indexBody) ;
    
    String[] separated = str.split(":");
    String separate = separated[1];

    str = str.replaceAll(separate, "<b>" + separate + "</b>"); //errorline
    arrayAdapter.add(Html.fromHtml(str));
}while (smsInboxCursor.moveToNext());
}