Accessability for the Blind and Visually Impaired

Hi.  I'd like to make my app accessable for the blind and visually impaired.  How do I add description for Android's Talkback feature?

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Talkback is described here:  https://support.google.com/accessibility/android/answer/6007100?hl=en  

 How to add descriptions is discussed here:  http://developer.android.com/guide/topics/ui/accessibility/apps.html  
in general terms, not specifically AI2.

Some of these activities might be accessible through ActivityStarter with AI2  and some, because they are evoked by xml might be controllable (there is a new xml tool in the Web component added just this past week (nr139) but at the moment, I have no Idea how.    It might not be possible to access these features through App Inventor 2.

You are going to have to experiment.    Be aware, MIT is in the process of adding API 4 capability to AI2 projects, at present it is at API 3; so all the functions of the latest  Talkback will not be accessible now in any case until API 4 is implemented.

This would be a neat feature.  You might ask this question of the MIT development team here:  https://groups.google.com/forum/#!forum/app-inventor-open-source-dev

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All right, I'll wait.  Thanks.

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