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Accessibility for custom views in Android

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From: Date: Jan 21, 2020 1:49PM

Hello everyone.
I´m working in an accessibility training for Android devs.
We´re consuming a library that has accessibility already implemented.
However, I´m worried about use cases where we will must implemented
custom components that don´t exist on that library.

I´ve been researching and I found methods such as
AccessibilityNodeInfo or sendAccessibilityEvent, but, as I´m not an
android dev, I don´t understand very well what are they used for.

Could please someone guide me and tell me what are the key methods to
enssure accessibility in android custom views and also what are these
methods used for?

Thanks so much