From the course: Android App Development: Accessibility

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Accessibility node info

Accessibility node info - Android Tutorial

From the course: Android App Development: Accessibility

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Accessibility node info

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- [Instructor] There are times that the accessibility service might need more information about a view that is not included in the accessibility event itself. This is what the accessibility node info provides. So going back to our diagram, the accessibility service will then request more information about a view, and the application provides that information back via the accessibility node info. The accessibility node info is the alternate representation of your view in the view hierarchy. It contains the information about a view that accessibility services care about. It's a snapshot of the view state. With this additional information, the accessibility service may choose to announce additional information to the user. We can separate the info that it provides into three groups, the content itself, which includes the text content, the type of this view, such as button image view, edit text, et cetera. The bounds of this view in the screen are relative to its parent, whether this view…

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