codenameone reference components from another function - codenameone

Question

I have created a register form (not using the designer).
On the form I have created numerous text fields as well as a button with ...
Button btnRegister = new Button();
btnRegister.setName("btnRegister");
btnRegister.setText("Register");
btnRegister.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
frmRegister_btnRegister(f);
}
});
f.addComponent(btnRegister);
My question is how do I reference the textfields in the function being called from the button action listener. Specifically I am trying to set up arguments to use for a network call using addArgument. When I used the designer I used find(ComponentName) but that is not available anymore.
private void frmRegister_btnRegister(Form f) {
// register new user
ConnectionRequest r = new ConnectionRequest();
r.setUrl(sUrlWebSvc);
r.setPost(true);
r.addArgument("Rest", "1"); // restaurant code
r.addArgument("Req", "Register"); // R = register
//r.addArgument("first_name", findTxtUsertName(c).getText());
// show spinning dialog while connecting
InfiniteProgress prog = new InfiniteProgress();
Dialog dlg = prog.showInifiniteBlocking();
r.setDisposeOnCompletion(dlg);
NetworkManager.getInstance().addToQueueAndWait(r);
//System.out.println(r.getResponseData());
}

Answer 1

Assuming its defined just above this line:
Button btnRegister = new Button();
As:
TextField txt =....
Just change it to:
final TextField txt =....
And then you can pass it (or its getText() string value) to:
btnRegister.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
frmRegister_btnRegister(f, txt);
}
});
Naturally you will need to update the signature of frmRegister_btnRegister to accept a text field or a string.