Android Question How to use Accessibility

[yshzsl]

Hello everyone:
I am a beginner of B4X. I have recently learned the basics of B4X language. now,I am learning about its built-in libraries. In B4A, I don't know how to use Accessibility or what its purpose is.
I have three questions and I hope the experts can help me clarify them:
1、Is Accessibility an accessible service library？
2、Generally, when using a mobile phone or Pad, The soft keyboard does not have the up, down, left, and right keys. How to implement SetNextFocusUp, SetNextFocusDown, SetNextFocusLeft, and SetNextFocusRight.
3、Do we need to create a new service to achieve accessibility services? Can libraries that only reference accessible services be operated?

Thank you in advance.

 

[Erel]

1. No.
2. You are correct and these methods aren't used too much. There are devices with built-in keyboard though.
Note that for UI with multiple inputs, it is recommended to use B4XPreferencesDialog or B4XFloatTextField and set the NextField property.
3. Check this library: https://www.b4x.com/android/forum/t...th-disabilities-automation-etc.95216/#content
There is also this one: https://www.b4x.com/android/forum/threads/intellvold-accessibility-service.165237/#content

 

[yshzsl]

Thank you, Erel. Thank you for taking the time to respond and provide guidance amidst your busy schedule.
Thank you for providing such a great example, which has enabled me to further learn how to use and develop accessible services.

I have obtained the Intellvold_AccessibilityService library and B4AAccessibilityService library from the location you provided. Currently, I am testing and familiarizing myself with the usage of these two libraries.
Thanks again.