trouble with Theme in the olderGUI - codenameone

Question

i´m starting with CN1, and i traying with Todo App example. When i run de app in Netbeans, only appears a blank form, I changed the themes, I added a jpg image and made others changes in the res file with the olderGUI Builder and use the function theme = UIManager.initNamedTheme("/theme","Theme 2");, but i don´t have any change in the dorm when i try to simulate in Netbeans.
This is the complete code in the TodoApp java file, I comment the part of the new hi Form (I use the "Hi World" bare bones template):
public class TodoApp {
private Form current;
private Resources theme;
public void init(Object context) {
// use two network threads instead of one
updateNetworkThreadCount(2);
//theme = UIManager.initFirstTheme("/theme");
theme = UIManager.initNamedTheme("/theme","Theme 2");
// Enable Toolbar on all Forms by default
Toolbar.setGlobalToolbar(true);
// Pro only feature
Log.bindCrashProtection(true);
addNetworkErrorListener(err -> {
// prevent the event from propagating
err.consume();
if(err.getError() != null) {
Log.e(err.getError());
}
Log.sendLogAsync();
Dialog.show("Connection Error", "There was a networking error in the connection to " + err.getConnectionRequest().getUrl(), "OK", null);
});
}
public void start() {
if(current != null){
current.show();
return;
}
//Form hi = new Form("Hi World", BoxLayout.y());
//hi.add(new Label("Hi World"));
//hi.show();
new TodoForm();
}
public void stop() {
current = getCurrentForm();
if(current instanceof Dialog) {
((Dialog)current).dispose();
current = getCurrentForm();
}
}
public void destroy() {
}
}
I couldn't find what i do wrong. Thanks!!!
P.D. Sorry for my English, I learning it too.

Answer 1

We recommend avoiding the old GUI builder. It's no longer supported and wasn't designed for modern mobile apps. In order to use it you have to create a special type of project (old GUI project) and only that type of project works with it.
The new GUI builder works better, it has a more powerful layout system and works in a way that's more consistent with modern GUI builders. See https://www.codenameone.com/blog/tutorial-gui-builder-autolayout-signin-form-responsive.html