How to prevent multiple spaces between words in EditText?

Question

I'm trying to find a way to prevent multiple spaces between words in an EditText and also prevent leading space. I tried to do so with a TextWatcher but I can't figure out how to do it. Any help would be appreciated.

Answer 1

You can do so using an InputFilter. Feel free to use this code snippet:

InputFilter filter = new InputFilter() {
    public CharSequence filter(CharSequence source, int start, int end,
                               Spanned dest, int dstart, int dend) {
        String stringSource = source.toString();
        String stringDest = dest.toString();
        if (stringSource.equals(" ")) {
            if (stringDest.length() == 0)
                return "";
            if (stringDest.length() >= 1)
                if ((dstart > 0 && txt2.charAt(dstart - 1) == ' ') || (txt2.length() >  dstart && txt2.charAt(dstart) == ' ') || dstart == 0)
                    return "";
        }
        return null;
    }
};
editText.setFilters(new InputFilter[]{filter});

Here is the result on my app:

Hope this helps!