Multiautocompletetextview, Show autocomplete drop down only when user presses a key after '@' key (like mention in FB app)

Question

I got it working with custom \'@\' tokenizer. But it fails for the first autocompletion. My code works as a comma tokenizer where I get suggestion for any character and next

Answer 1

If you want to do mention query with the character '@', you can do query onTextChanged as below:

        @Override
        public void onTextChanged(CharSequence s, int start, int before, final int count) {
            if (s.length() > 0) {
                // Todo: query mentions
                Matcher mentionMatcher = Pattern.compile("@([A-Za-z0-9_-]+)").matcher(s.toString());
                // while matching
                while (mentionMatcher.find()) {
                   yourSearchText = s.toString().substring(mentionMatcher.start() + 1, mentionMatcher.end());
                  // do query with yourSearchText below
                }
           }
       }

Note: you also can do hashTag query with the character '#' by replace it in

"@([A-Za-z0-9_-]+)"

Answer 2

https://github.com/linkedin/Spyglass check this out , having all the use cases for mentions