Method append() of EditText doesn't work in custom dialog

Question

I'm trying to add some chars to the entering text in an EditText field, but the method append() is not working.

@Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.temp, container, false);
        button = (Button)rootView.findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                final Dialog dialog = new Dialog(getActivity());
                dialog.setContentView(R.layout.enter_sms_dialog);
                dialog.setTitle(Html.fromHtml("<font color='#000000'>Phone number verification</font>"));
                edSmsCode = (EditText) dialog.findViewById(R.id.edSmsCode);
                edSmsCode.addTextChangedListener(new TextWatcher() {
                    int len = 0;
                    @Override
                    public void beforeTextChanged(CharSequence s, int start, int count, int after) {
                        String str = edSmsCode.getText().toString();
                        len = str.length();
                    }
                    @Override
                    public void onTextChanged(CharSequence s, int start, int before, int count) {}
                    @Override
                    public void afterTextChanged(Editable s) {
                        String str = edSmsCode.getText().toString();
                        if (str.length() == 3 && len < str.length()) {
                            edSmsCode.append("-");
                        }
                    }
                });
                dialog.show();
            }
        });
        return rootView;
    }

But this method works when I use this code for an EditText in Fragment's root view. Is this a bug?

Welcome to StackOverflow. Please read and follow the posting guidelines in the help documentation. [Minimal, complete, verifiable example](http://stackoverflow.com/help/mcve) applies here. We cannot effectively help you until you post your code and accurately describe the problem. Specifically, *how* is it "not working"? — Prune, Jan 27 '16 at 22:41

score 0 · Answer 1 · edited May 23 '17 at 11:44

Try replacing edSmsCode with (EditText)getCurrentFocus() (get the view that's being focused, in this case an editText) in the afterTextChanged() method.

public void afterTextChanged(Editable s) {
   EditText editText = (EditText)getCurrentFocus();
   String str = editText.getText().toString();
   if (str.length() == 3 && len < str.length()) { 
      editText.append("-");
   }
}

source: https://stackoverflow.com/a/5951792/5837758

If that doesn't solve it, you can also try setting edSmsCode as final, according to this answer: https://stackoverflow.com/a/27094374/5837758

Method append() of EditText doesn't work in custom dialog

1 Answers1