Check your server logs and put breakpoint there to see if it is reaching
server, maybe your RPC is failing on the server.
Also take a look at the browser console, there might be a NPE before even
calling the RPC.
Also, giving a look at your code, instead of manually showing and closing
the loading dialog with every RPC call, you can wrap your calls in a
generic class; which would override onSuccess and onFailure, and would take
care of showing/hiding the loading indicator for you.
On Friday, December 9, 2016 at 8:34:40 AM UTC-5, Olar Andrei wrote:
>
> Hello,
>
> I have a little problem here, which I try to figure out why it is
> happening.
>
> I use GWT Material Design in my project, and I just wanted to show a
> loading screen while the login is being processed, but I get an
> UmbrellaException, and the loading icon just spins there forever...
>
> If I just remove MaterialLoader.showLoading(true); and MaterialLoader.
> showLoading(false); everything works.
>
> Does anybody know why this is happening ?
>
>
>
> private static void performUserConnection(String username, String
> password) {
> MaterialLoader.showLoading(true);
>
> DBConnectionAsync rpcService = (DBConnectionAsync)
> GWT.create(DBConnection.class);
> ServiceDefTarget target = (ServiceDefTarget) rpcService;
> String moduleRelativeURL = GWT.getModuleBaseURL() + "DBConnectionImpl";
> target.setServiceEntryPoint(moduleRelativeURL);
>
> rpcService.authenticateUser(username, password, new
> AsyncCallback<User>() {
>
> @Override
> public void onSuccess(User user) {
> MaterialLoader.showLoading(false); // Does not get here
>
> // ...
>
> if (user.getType().equals("User")) {
> presenter.goTo(new UserPlace(username));
> } else if (user.getType().equals("Admin")) {
> presenter.goTo(new AdminPlace(username));
> }
> }
>
> @Override
> public void onFailure(Throwable caught) {
> MaterialLoader.showLoading(false); // Does not get here
>
> if (caught instanceof InvalidCredentialsException) {
> MaterialToast.fireToast(caught.getMessage(), "rounded");
> } else {
> MaterialModal materialModal =
> ModalCreator.createModal("Something went wrong", caught);
> RootPanel.get().add(materialModal);
> materialModal.open();
> }
>
> }
>
> });
> }
>
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