Comments on: GWT UiBinder – Passing Parameters to Widgets

By: GWT UiBinder – Passing Objects to Widgets | Jeff Douglas - Technology, Coding and Bears... OH MY!

Tue, 13 Jul 2010 11:03:50 +0000

[...] couple of weeks ago I wrote a GWT 2.0 tutorial for passing simple values to a widget and this is the (promised) follow up on how to pass an object to a widget. For more info on working [...]

By: Amjad hussein

Amjad hussein — Thu, 03 Jun 2010 01:01:05 +0000

Why did you add the key word ‘provided=true’ in the line @UiField(provided=true) ? You didn’t add that in other locations.

By: Steve

Steve — Wed, 24 Mar 2010 14:45:28 +0000

I get an error trying to run this. NullPointerException in line 26 of MyPanel.java. initWidget(uiBinder.createAndBuildUi(this)

I had to change the first line of the MyPanel constructor to be:
myField = new Hidden() to get it to work.

By: Uri

Uri — Tue, 16 Mar 2010 15:20:25 +0000

Nevermind I solved the whole thing using Events. Probably is a cleaner approach for the GWT.

Uri

By: Uri

Uri — Tue, 16 Mar 2010 14:19:37 +0000

Meant to write: In TopPanel.ui.xml I have

Welcome back, >g:Label ui:field=”myField”/>

By: Uri

Uri — Tue, 16 Mar 2010 14:18:06 +0000

Jeff,

In my case I have two files, Login.java/ui.xml and TopPanel.java/ui.xml — after Login I need to pass the value of the logged in user to TopPanel. I don’t understand how I can communicate between these two files using GWT. In TopPanel.java I have

public void setLoggedInUser(String username) {
myField.setValue(username);
}

In TopPanel.ui.xml I have

Welcome back,

So now in Login.Java how would I pass the value of the logged in user to the Label ‘myField’? I tried to use in Login.java so I could do @UiField TopPanel res and then res.setLoggedInUser but while that fired into the method correctly it did not update the text. I also tried to create a new instance of TopPanel but that didn’t work either.

Any ideas?

Thanks,
Uri

By: Jeff Douglas

Jeff Douglas — Mon, 15 Mar 2010 16:34:32 +0000

Yes! See GWT UiBinder – Passing Objects to Widgets.

By: Craig

Craig — Mon, 15 Mar 2010 16:32:10 +0000

Is is possible to pass in parameters that are not Strings ?

Thanks

Craig

By: GWT UiBinder – Passing Objects to Widgets | Jeff Douglas – Technology, Coding and Bears… OH MY!

Wed, 24 Feb 2010 13:00:11 +0000

[...] couple of weeks ago I wrote a GWT 2.0 tutorial for passing simple values to a widget and this is the (promised) follow up on how to pass an object to a widget. For more info on working [...]