Android - TalkBack 辅助功能专注于 Recycleview 中的滑动删除按钮

Question

I have drawn the Swipe to delete button(RectF) in Recycle view with the help on

 val oBackground = RectF(itemView.right.toFloat() - buttonWidth, itemView.top.toFloat(), itemView.right.toFloat(), itemView.bottom.toFloat())
    paint.color = ContextCompat.getColor(viewHolder.itemView.context, R.color.color_cc0013)
    canvas.drawRect(optionsBackground, paint)

    // Displays delete drawable within specified bounds
    val deleteBtmp: Bitmap = getBitmapFromVectorDrawable(viewHolder.itemView.context, R.drawable.vector_delete)
    val destination = RectF(
        itemView.right.toFloat() - buttonWidth + paddingLeft,
        itemView.top.toFloat() + paddingTop,
        itemView.right.toFloat() - paddingRight,
        itemView.bottom.toFloat() - paddingBottom
    )
    canvas.drawBitmap(deleteBtmp, null, destination, paint)

How I can set TalkBack accessibility focus on swipe to delete button(deleteBtmp) in Recycleview?

Answer 1

Your delete button is what we call a "virtual view". You'll need to expose it with an AccessibilityNodeProvider.

ExploreByTouchHelper is a wrapper intended to simplify the process.

Much simpler, however, would be to adjust your UI to use a regular button, and take advantage of the built-in accessibility reporting.