Looks like you're using a pre-2.5.1
version: https://code.google.com/p/google-web-toolkit/issues/detail?id=7552
On Wednesday, February 12, 2014 3:30:14 AM UTC+1, Tom wrote:
>
> ok, I have a button & when clicking that button it will call this methodX
>
> public void methodX(){
> CheckBox cb=new CheckBox();
> HandlerRegistration reg=cb.addClickHandler(new ClickHandler(){
>
> @Override
> public void onClick(ClickEvent event) {
> // TODO Auto-generated method stub
> int x=1;
> }
>
> });
> if(reg!=null){
> reg.removeHandler();
> }
> }
>
> The above methoxX runs ok. There no error whatsoever when i click the
> button 1 time or many times. However if I change the methodX a bit
>
> public void methodX(){
> CheckBox cb=new CheckBox();
> HandlerRegistration reg=cb.addClickHandler(new ClickHandler(){
>
> @Override
> public void onClick(ClickEvent event) {
> // TODO Auto-generated method stub
> int x=1;
> }
>
> });
> if(reg!=null){
> reg.removeHandler();
> }
>
> ///add these lines of code
> if(reg!=null){
> reg.removeHandler();
> }
> }
>
> Now when clicking the button I got this error
>
> Uncaught exception escaped
> com.google.gwt.event.shared.UmbrellaException: Exception caught: redundant
> remove call
> at
> com.google.gwt.event.shared.HandlerManager.fireEvent(HandlerManager.java:129)
>
> Is there anyway to control this or this is Google bug?
>
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