Where to handle user's input data in DialogPreference inherited class?

I have custom DialogPreference of two EditText views and do comparison of those in onDialogClosed() which doesn't work for me because in case strings are not equal I can not stop dialog closure, so I need the meth开发者_开发技巧od before onDialogClosed() to make these comparisons and then decide whether to call onDialogClosed() or not.

So, any other good place to make comparisons or ability to cancel dialog closure?

You can set the TextWatcher implementation to the edittext and in its afterTextChanged() callback do the comparison of strings. If the strings match enable the OK button, else disable it.

ed2.addTextChangedListener(new TextWatcher() {
    @Override
    public void afterTextChanged(Editable s) {
        if (ed1.gettext().tostring().compareIgnoreCase(s.tostring()) == 0) {
             // enable the ok button.
        } else {
             // disable it.
        }
    }

    @Override
    public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        // TODO Auto-generated method stub
    }

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

I use onDismiss(DialogInterface dialog) to achieve something similar to this.