[BadgeDrawable] TalkBack not reading badge count when badge is set on toolbar menu item

[nimaiwalsh]

Description: Full description of issue here

• TalkBack not reading badge count when badge is created for an action menu item on the toolbar and the following is set:
  setContentDescriptionQuantityStringsResource(R.plurals.attachment_count_plural)
• contentDescription is correct when debugging using getContentDescription

Expected behavior: Screenshots and/or description of expected behavior
TalkBack will read the plural string with quantity

Source code: The code snippet which is causing this issue. Please consider attaching a minimal sample app that reproduces the issue.

@ExperimentalBadgeUtils
/**
 * Creates a [BadgeDrawable] for an action item in the [Toolbar]
 * Run [BadgeDrawable.updateBadgeCount] function to make badge visible with expected count.
 * @param menuItemId @IdRes - action menu item to apply badge
 * @param textColour @AttrRes - badge text color
 * @param textColour @AttrRes - badge text color
 * */
fun Toolbar.createBadge(
    @IdRes menuItemId: Int,
    @AttrRes textColour: Int? = null,
    @AttrRes backgroundColor: Int? = null,
): BadgeDrawable {
    val badge = BadgeDrawable.create(this.context)
    badge.maxCharacterCount = 3
    badge.badgeGravity = BadgeDrawable.TOP_END
    textColour?.let {
        badge.badgeTextColor = it
    }
    backgroundColor?.let {
        badge.backgroundColor = it
    }
    badge.isVisible = false
    badge.setContentDescriptionQuantityStringsResource(R.plurals.attachment_count_plural)
    BadgeUtils.attachBadgeDrawable(badge, this, menuItemId)
    return badge
}

/**
 * Update the count for [BadgeDrawable]
 * @param count - badge count as an [Int]
 * */
fun BadgeDrawable.updateBadgeCount(count: Int) {
    isVisible = count > 0
    number = count
    verticalOffset = 10
    // Offset to prevent clipping
    horizontalOffset = when {
        count > 99 -> 24
        count > 9 -> 12
        else -> 0
    }
}

Android API version: Android API version here
Tested on API 29

Material Library version: Material Android Library version you are using here (e.g., 1.1.0-alpha07)
materialVersion = '1.3.0'

Device: Device on which the bug was encountered here
Emulator Pixel 4, TalkBack

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We also happily accept pull requests.

[drchen]

@wcshi can you take a look? I'm not even sure if this is something possible to be fixed (at least on our end).

[drchen]

Will find someone else to take a look at this due to @wcshi's limited availability on Android View library. : )