App freezes on autocomplete textChanged

问题

I was able to get the first and last text of user input for AutoCompleteTextview but My App freezes when i set the builder method on AutocompleteTextView textChanged method. I appreciate any effort provided.

@Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {

            if(s.length()>0) {
                String selectedText = s.toString();
                int end = selectedText.length()+start;
                SpannableStringBuilder builder = new SpannableStringBuilder(selectedText);
                builder.setSpan(android.graphics.Typeface.BOLD, start, end, Spannable.SPAN_INCLUSIVE_INCLUSIVE);
                Log.i("builderText", " "+builder);
                autoCompleteTextView.setText(builder);

            }

        }

回答1:

The issue is that you are trying to get the index of a character on a possible empty string. That's why you get -1 here

String startText = autoCompleteTextView.getText().toString();
int start = startText.indexOf(0);
int end = startText.indexOf(1);

You might want to add that statement in a listener e.g. autoCompleteTextView.addTextChangedListener() and handle it there where the actual text changes occur.

来源：https://stackoverflow.com/questions/41961050/app-freezes-on-autocomplete-textchanged