ADF UIX: How to use MessageCheckbox to trigger a component to be rendered?

Question

I have two UIX component:
messageCheckBox model="${bindings.Servicelocal}"
and messageStyledText id="mst_TextChange".
I want messageStyledText to be showed if messageCheckBox was checked.
I want to know how to set the “rendered” property of the MessageStyleText.
The following is my uix xml code:
<rowLayout>
<contents>
<cellFormat>
<contents>
<messageStyledText id="mst_TextChange" text="${bindings.Servicelocal}" rendered="${bindings.Servicelocal}"/>
</contents>
</cellFormat>
<cellFormat>
<contents>
<messageCheckBox model="${bindings.Servicelocal}" >
<end>
<formValue model="${ctrl:createCheckBoxState(bindings.Servicelocal)}"/>
</end>
<primaryClientAction>
<firePartialAction event="ShowHide_Text" unvalidated="true" targets="mst_TextChange"/>
</primaryClientAction>
</messageCheckBox>
</contents>
</cellFormat>
</contents>
</rowLayout>

Answer 1

I think you're on the right track here.
Assuming that the values for Servicelocal are 'Y' and null, what you could do is use EL to define the rendered component as follows:
rendered="${!empty bindings.Servicelocal.inputValue}"
or alternatively:
rendered="${empty bindings.Servicelocal.inputValue ? false : true}"
I'm writing this from home so can't check the above but you get the idea.
Note the use of ".inputValue" to retrieve the actual value of Servicelocal.
I note your use of the &lt;firePartialAction&gt; tag in the &lt;messageCheckBox&gt;. Please note I recently found a bug (I've raised this with Oracle Support) where the &lt;firePartialAction&gt; causes the running page to ignore any user input for some seconds (5 sec?) when fired from a &lt;messageCheckBox&gt;. Your mileage may vary.
Hope this helps.
CM.