no código postado abaixo, quando deixo o campoip em branco / vazio e dê valores aos outros campos, otoast sempre transmite a mensagemKATimer is invalid or missing.

eu esperava ver umtoast mostrando com uma mensagem indicando o campo vazio, mas o código abaixo, se algum campo estiver vazio, sempre dizKATimer is invalid or empty.

por que isso está acontecendo, estou sentindo falta de algo

Código:

btnStubView_Connect:

btnStubView_Connect.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            if (isValidMQTTConfigs(etStubView_ip) && 
                    isValidMQTTConfigs(etStubView_port) && 
                    isValidMQTTConfigs(etStubView_ClientID) &&
                    isValidMQTTConfigs(etStubView_KATimer)) {

                Log.d(TAG, "@btnStubView_ConnectListener(): all entries are valid");
                setCSession(cbStubView_CS.isChecked()); // set the current state of the cleanSession checkBox.
                addToContentValues();
                Log.d(TAG, "@btnStubView_ConnectListener(): all entries added toContentValues");

            } else {
                Log.w(TAG, "@btnStubView_ConnectListener(): one or more entry(s) is invalid or left blank.");
            }
        }
    });

isValidMQTTConfigs:

protected boolean isValidMQTTConfigs(View view) {
    // TODO Auto-generated method stub
    boolean valid = false;
    String viewName = "";

    switch(view.getId()) {
    case R.id.etSubView_ip:
        viewName = "IP";
        if (isDuly( ((EditText) view).getText().toString())) {
            this.setIP(((EditText) view).getText().toString());
            return valid = true;
        }

    case R.id.etSubView_port:
        viewName = "Port";
        if (isDuly( ((EditText) view).getText().toString())) {
            this.setPort(((EditText) view).getText().toString());
            return valid = true;
        }

    case R.id.etSubView_clientID:
        viewName = "clientID";
        if (isDuly( ((EditText) view).getText().toString())) {
            this.setClienID(((EditText) view).getText().toString());
            return valid = true;
        }

    case R.id.etSubView_KATimer:
        viewName = "KAtimer";
        if (isDuly( ((EditText) view).getText().toString())) {
            this.setKATimer(((EditText) view).getText().toString());
            return valid = true;
        }
    }

    Log.w(TAG, "@checkMQTTConfigs(): " + viewName + " is invalid or missing");
    Toast.makeText(getActivity(), viewName + " is invalid or missing", Toast.LENGTH_SHORT).show();
    return valid;
}

isDuly:

private boolean isDuly(String text) {
    // TODO Auto-generated method stub
    if (text.trim().equals("")) {
        return false;
    } else {
        return true;
    }
}