This looks like a race condition that has been there for a while. I have
just committed a fix for it here
https://github.com/codenameone/CodenameOne/commit/783ac2828409aa747103a35001b4886e24944484
With the last update, however, the com.codename1.javascript package is now
deprecated in favour of a new async API that is incorporated directly into
the BrowserComponent class. I recommend migrating over to this new API for
new code, as it will produce much better performance (no hidden
invokeAndBlock under the hood - except in xxxAndWait() methods).
Using the new API, your code would become:
bc.addJSCallback("window.checkfoxClickedCallback ={setChecked: function(){
callback.onSuccess(null)}}", r->{
Log.p("->checkboxClickedCallback.setChecked()");
contexto.mostrarMensaje("checkboxClickedCallback.setChecked()");
});
bc.addJSCallback("window.okButtonClickedCallback = {showMap: function() {
callback.onSuccess(null)}}", r->{
Log.p("->okButtonClickedCallback.showMap()");
contexto.mostrarMensaje("okButtonClickedCallback.showMap()");
});
Notice, with this new syntax, you reference the java callback explicitly in
the javascript code via the "callback" variable, which, in Javascript,
contains 2 methods: onSuccess(arg), and onError(message, code).
Steve
On Wed, Jan 3, 2018 at 5:09 AM, <[email protected]> wrote:
> Hello:
>
> Since the last codename1 libary update we've been having problems with
> the BrowserComponent on iOS. We've narrowed down the problem to the
> callback registration process (which gets executed on the BrowserComponent
> onLoad callback). We register two functions, but only the second one can be
> invoked from javascript. The first one gets registered ok (we can see its
> code from the javascript side) but fails to execute on iOS (in Android and
> the simulator works fine). We tried a lot of permutations, and different
> argument lengths for both functions, but the only difference we see is the
> registration order. If we switch the registration order, we can only invoke
> the other one (whichever gets registered last).
>
> /*
> * Registramos el callback JS de valor cambiado del checkbox "No volver a
> mostrar este asistente".
> */
> JSObject checkboxClickedCallback = (JSObject) javascriptContext.get("{}");
> checkboxClickedCallback.set("setChecked", new JSFunction() {
> public void apply(JSObject self, Object[] args) {
> Log.p("->checkboxClickedCallback.setChecked()");
> contexto.mostrarMensaje("checkboxClickedCallback.setChecked()");
>
> }
> });
> javascriptContext.set("window.checkboxClickedCallback",
> checkboxClickedCallback);
>
> /*
> * Registramos el callback JS de click en el botón "OK".
> */
> JSObject okButtonClickedCallback = (JSObject) javascriptContext.get("{}");
> okButtonClickedCallback.set("showMap", new JSFunction() {
> public void apply(JSObject self, Object[] args) {
> Log.p("->okButtonClickedCallback.showMap()");
> contexto.mostrarMensaje("okButtonClickedCallback.showMap()");
>
> }
> });
> javascriptContext.set("window.okButtonClickedCallback",
> okButtonClickedCallback);
>
> Please help, as it's impacting our current production code.
>
> Kind regards,
> Kandy
>
> --
> You received this message because you are subscribed to the Google Groups
> "CodenameOne Discussions" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to [email protected].
> Visit this group at https://groups.google.com/
> group/codenameone-discussions.
> To view this discussion on the web visit https://groups.google.com/d/
> msgid/codenameone-discussions/493a9217-0a4a-44b5-aede-
> 974096f652d4%40googlegroups.com
> <https://groups.google.com/d/msgid/codenameone-discussions/493a9217-0a4a-44b5-aede-974096f652d4%40googlegroups.com?utm_medium=email&utm_source=footer>
> .
> For more options, visit https://groups.google.com/d/optout.
>
--
Steve Hannah
Software Developer
Codename One
http://www.codenameone.com
--
You received this message because you are subscribed to the Google Groups
"CodenameOne Discussions" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
Visit this group at https://groups.google.com/group/codenameone-discussions.
To view this discussion on the web visit
https://groups.google.com/d/msgid/codenameone-discussions/CAGOYrKWnqZ-6Q9Ni0pAMs9Ma83D6yrnDoFjWm8zeZoBu8WfUCw%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.
