🎨 Palette: Initialize interactive accessibility elements synchronously

.Jules/palette.md

@@ -150,3 +150,7 @@
 ## 2026-05-30 - User-Facing System Notifications
 **Learning:** Foreground service notifications and channels are exposed directly to users within their system drawer and app settings. Hardcoding technical or aggressive terminology (e.g., naming a channel ID as the visible name or using "Kill" as an action button) degrades the user experience and violates UX standards. Furthermore, failing to extract these strings to `strings.xml` prevents localization and accessibility optimizations.
 **Action:** Always avoid hardcoded, technical, or aggressive terminology in user-facing system notifications and foreground service controls. Utilize standard mobile UX phrasing (e.g., "Stop", "Tap") and ensure all notification text (titles, descriptions, actions) is extracted to localized string resources.
+
+## 2026-06-08 - Async View Initialization and Accessibility
+**Learning:** Interactive elements with dynamic text and secondary actions must have their full actionable `contentDescription` and their custom `AccessibilityDelegateCompat` set during view initialization. Waiting for an asynchronous block (like a network request or local IP resolution) to complete before assigning these properties creates a window where the element is completely inaccessible to screen readers, and tapping it may result in no feedback.
+**Action:** Always provide explicit feedback (e.g., a Toast) if a user interacts with a UI element that is visibly actionable but functionally disabled due to a loading state. Furthermore, attach the custom `AccessibilityDelegateCompat` to the view immediately during initialization, ensuring screen readers understand its interactive role even during loading.

app/src/main/java/com/samsung/android/scan3d/fragments/CameraFragment.kt

@@ -85,6 +85,38 @@ class CameraFragment : Fragment() {
     ): View {
         _fragmentCameraBinding = FragmentCameraBinding.inflate(inflater, container, false)
 
+        _fragmentCameraBinding?.let { binding ->
+            // Set initial state before async operation completes
+            binding.textView6.contentDescription = getString(R.string.actionable_content_description_format, getString(R.string.default_ip), getString(R.string.copy_ip_tooltip))
+            binding.textView6.setOnClickListener {
+                Toast.makeText(context, R.string.ip_loading_message, Toast.LENGTH_SHORT).show()
+            }
+
+            ViewCompat.setAccessibilityDelegate(binding.textView6, object : AccessibilityDelegateCompat() {
+                override fun onInitializeAccessibilityNodeInfo(host: View, info: AccessibilityNodeInfoCompat) {
+                    super.onInitializeAccessibilityNodeInfo(host, info)
+                    info.className = android.widget.Button::class.java.name
+                    val clickAction = AccessibilityNodeInfoCompat.AccessibilityActionCompat(
+                        AccessibilityNodeInfoCompat.AccessibilityActionCompat.ACTION_CLICK.id,
+                        getString(R.string.copy_ip_tooltip)
+                    )
+                    info.addAction(clickAction)
+                }
+            })
+
+            ViewCompat.setAccessibilityDelegate(binding.textView2, object : AccessibilityDelegateCompat() {
+                override fun onInitializeAccessibilityNodeInfo(host: View, info: AccessibilityNodeInfoCompat) {
+                    super.onInitializeAccessibilityNodeInfo(host, info)
+                    info.className = android.widget.Button::class.java.name
+                    val clickAction = AccessibilityNodeInfoCompat.AccessibilityActionCompat(
+                        AccessibilityNodeInfoCompat.AccessibilityActionCompat.ACTION_CLICK.id,
+                        getString(R.string.repo_desc)
+                    )
+                    info.addAction(clickAction)
+                }
+            })
+        }
+
         // Get the local ip address
         viewLifecycleOwner.lifecycleScope.launch {
             val localIp = IpUtil.getLocalIpAddress()
@@ -102,29 +134,7 @@ class CameraFragment : Fragment() {
                     }
                 }
 
-                ViewCompat.setAccessibilityDelegate(binding.textView6, object : AccessibilityDelegateCompat() {
-                    override fun onInitializeAccessibilityNodeInfo(host: View, info: AccessibilityNodeInfoCompat) {
-                        super.onInitializeAccessibilityNodeInfo(host, info)
-                        info.className = android.widget.Button::class.java.name
-                        val clickAction = AccessibilityNodeInfoCompat.AccessibilityActionCompat(
-                            AccessibilityNodeInfoCompat.AccessibilityActionCompat.ACTION_CLICK.id,
-                            getString(R.string.copy_ip_tooltip)
-                        )
-                        info.addAction(clickAction)
-                    }
-                })
 
-                ViewCompat.setAccessibilityDelegate(binding.textView2, object : AccessibilityDelegateCompat() {
-                    override fun onInitializeAccessibilityNodeInfo(host: View, info: AccessibilityNodeInfoCompat) {
-                        super.onInitializeAccessibilityNodeInfo(host, info)
-                        info.className = android.widget.Button::class.java.name
-                        val clickAction = AccessibilityNodeInfoCompat.AccessibilityActionCompat(
-                            AccessibilityNodeInfoCompat.AccessibilityActionCompat.ACTION_CLICK.id,
-                            getString(R.string.repo_desc)
-                        )
-                        info.addAction(clickAction)
-                    }
-                })
 
                 binding.textView2.setOnClickListener {
                     val url = getString(R.string.repo_url)

app/src/main/res/values/strings.xml

@@ -76,4 +76,5 @@
     <string name="frame_time_format">%1$d ms</string>
     <string name="bitrate_format">%1$d kB/sec</string>
     <string name="quality_format">%1$d%%</string>
+    <string name="ip_loading_message">Loading IP address, please wait&#8230;</string>
 </resources>