Accessibility: Missing labels on service ratings and navigation fixes

[AnaFerreira015]

Hi! I’m Ana Ferreira, a Master's student in Computer Science.

As part of my research on mobile accessibility, I am analyzing open-source Android applications to help identify and correct accessibility barriers so users can utilize assistive technologies (like TalkBack) more effectively.

I’ve been exploring ToS;DR and identified several accessibility issues across the service list and detail screens, so I wanted to propose a fix.

1. The Issue

On the Service List and Detail screens, several interactive elements (specifically the rating icons and expansion buttons) present the following behavior:

• Current behavior: The elements lack descriptive text labels. TalkBack announces them simply as "Unlabelled" or "Button", violating WCAG 4.1.2 (Name, Role, Value).
• Impact: Users relying on screen readers cannot understand the classification of a service (e.g., if it's Grade A or Grade E) or what a specific button does without trial and error.

2. Proposed Solution

To fix this, I suggest adding an android:contentDescription to the rating icons and interactive buttons in the layout XML.

Code snippet / XML suggestion:

<ImageView
    ...
    android:contentDescription="@string/grade_a_rating" />

3. Additional fixes (Need your input)

I have identified 6 other categories of accessibility improvements for ToS;DR.

To avoid spamming your notification feed, how would you prefer I submit these?

• Option A: List them all here in this issue (I can update the comment below).
• Option B: Open separate issues for each specific problem.

If you prefer to review everything at once, here is the summary of the other findings:

1. Focus Order Failure (WCAG 2.4.3): The navigation sequence via TalkBack is illogical, skipping important service details or jumping between sections in a confusing way.
2. Target Size Failure (WCAG 2.5.8 AA & 2.5.5 AAA): Many interactive elements are too small (below 24x24dp), making them difficult to tap accurately.
3. Missing Labels or Instructions (WCAG 3.3.2): Search fields or filter options lack persistent labels or clear instructions for screen reader users.
4. Gesture-Only Navigation (WCAG 2.5.1): Certain actions rely solely on gestures without simple pointer alternatives.
5. Text Resizing Issues (WCAG 1.4.4):
   • Insufficient Increase: Text content (legal summaries) does not scale properly when the system font size is maximized.
   • Insufficient Reduction: Layout issues occur when font size is reduced (Advisory).

I can provide detailed fixes for these upon request.

Please let me know your preference, and I will proceed accordingly.

Best regards,