[android-developers] TalkBack interactions with Android widgets

Dear all,
I have installed TalkBack application in Samsung Galaxy S II in order
to see the interaction with a sample application of mine.
I added contentDescritpion to any of the widget of my application. As
I saw, it does not make any difference for Button, ImageView and
Spinner widgets if you added contentDescription.For example, when I
click the Button, TalkBacks says "clicked" without mentioning the
valued from the contentDescription. Moreover, when I focus to
ImageView (by just touching a bit the screen or touching
continuosuly), talkback does not say anything. Is this the right way
that an ImageView is getting focus on, on touch screen devices?

Do I have to create my own custom components overriding the
corresponding methods and implement AccessibilityEventSource? For
example, is it possible for the TalkBack to "say" the spinner's
current selection?Currently, I manage it by showing the selected value
on an EditText which is focused on.

Or can I alternatively use the Text to Speech engine API (from the
example) in order to manually enable text to speech?

Regards,
kalgik

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