[SOLVED] Open the default tab in UI

Open the default tab in UI

I have the following markup in ui.xml:

<g:HTMLPanel>
    <g:TabPanel ui:field="mainTabPanel">        

        <g:Tab text=""></g:Tab>     
        <g:Tab text=""></g:Tab>
        <g:Tab text=""></g:Tab>

    </g:TabPanel>                       
</g:HTMLPanel>

At the entry point, I initialize the widget and try to specify what tab should be opened by default:

@UiField TabPanel mainTabPanel;
mainTabPanel = new TabPanel();
mainTabPanel.selectTab(1);

But the tab doesn't open.

How to open the default tab in UI?

Solution

When calling createAndBindUi, UiBinder creates all widget instances for you and puts them in your fields annotated with @UiField. What happened is that the field is overwritten -> The instance you called selectTab on isn't used anymore.

Simply remove the line "mainTabPanel = new TabPanel();" and check that "mainTabPanel.selectTab(1);" is called after createAndBindUi.

If you want to create the TabPanel instance manually, then annotate the field with "@UiField(provided=true)" and ensure that "mainTabPanel = new TabPanel();" before createAndBindUi.