From b1da3c216154919b2ee435327eccceeadfb2f847 Mon Sep 17 00:00:00 2001
From: Claude <noreply@anthropic.com>
Date: Thu, 28 May 2026 15:52:21 +0000
Subject: [PATCH] fix: move ML Kit translation off the UI dispatcher

LaunchedEffect runs on Dispatchers.Main by default. The first call to
LanguageTranslatorService triggers its class init, which loads a Properties
file from inside the play-services AAR via ZipFile/RandomAccessFile and
trips StrictMode's DiskReadViolation on the UI thread.

Wrap the translateAndCache call in withContext(Dispatchers.IO) so MLKit's
first-touch init happens off the UI dispatcher.
---
 .../ui/components/TranslatableRichTextViewer.kt        | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/amethyst/src/play/java/com/vitorpamplona/amethyst/ui/components/TranslatableRichTextViewer.kt b/amethyst/src/play/java/com/vitorpamplona/amethyst/ui/components/TranslatableRichTextViewer.kt
index 58b3c6232c..76b6265417 100644
--- a/amethyst/src/play/java/com/vitorpamplona/amethyst/ui/components/TranslatableRichTextViewer.kt
+++ b/amethyst/src/play/java/com/vitorpamplona/amethyst/ui/components/TranslatableRichTextViewer.kt
@@ -39,8 +39,10 @@ import com.vitorpamplona.amethyst.ui.navigation.navs.INav
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
 import com.vitorpamplona.amethyst.ui.theme.MaxWidthPaddingTop5dp
 import kotlinx.coroutines.CancellationException
+import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.ensureActive
 import kotlinx.coroutines.tasks.await
+import kotlinx.coroutines.withContext
 import kotlin.coroutines.coroutineContext
 
 @Composable
@@ -101,7 +103,13 @@ fun TranslatableRichTextViewer(
 
     LaunchedEffect(content, translateTo, dontTranslateFrom) {
         try {
-            translatedTextState.value = translateAndCache(content, translateTo, dontTranslateFrom)
+            // ML Kit's first-touch class init reads a Properties file out of the play-services AAR
+            // via ZipFile/RandomAccessFile, which trips StrictMode if it runs on the UI dispatcher
+            // that LaunchedEffect uses by default.
+            translatedTextState.value =
+                withContext(Dispatchers.IO) {
+                    translateAndCache(content, translateTo, dontTranslateFrom)
+                }
         } catch (e: CancellationException) {
             throw e
         } catch (_: Exception) {