From 9171209d44fedc8e1d4b177470fe408f2755980f Mon Sep 17 00:00:00 2001
From: Vitor Pamplona <vitor@vitorpamplona.com>
Date: Thu, 26 Mar 2026 15:20:38 -0400
Subject: [PATCH] Kickstart LRUCache to void constructor blocking in main
 thread

---
 .../main/java/com/vitorpamplona/amethyst/AppModules.kt    | 8 ++++++++
 .../com/vitorpamplona/amethyst/ui/StringResourceCache.kt  | 6 ++++++
 2 files changed, 14 insertions(+)

diff --git a/amethyst/src/main/java/com/vitorpamplona/amethyst/AppModules.kt b/amethyst/src/main/java/com/vitorpamplona/amethyst/AppModules.kt
index 3f26f521d..7fe6b43bc 100644
--- a/amethyst/src/main/java/com/vitorpamplona/amethyst/AppModules.kt
+++ b/amethyst/src/main/java/com/vitorpamplona/amethyst/AppModules.kt
@@ -25,6 +25,7 @@ import androidx.security.crypto.EncryptedSharedPreferences
 import coil3.disk.DiskCache
 import coil3.memory.MemoryCache
 import com.vitorpamplona.amethyst.commons.model.NoteState
+import com.vitorpamplona.amethyst.commons.robohash.CachedRobohash
 import com.vitorpamplona.amethyst.model.Account
 import com.vitorpamplona.amethyst.model.LocalCache
 import com.vitorpamplona.amethyst.model.accountsCache.AccountCacheState
@@ -62,6 +63,7 @@ import com.vitorpamplona.amethyst.service.relayClient.reqCommand.user.UserFinder
 import com.vitorpamplona.amethyst.service.relayClient.speedLogger.RelaySpeedLogger
 import com.vitorpamplona.amethyst.service.uploads.blossom.bud10.BlossomServerResolver
 import com.vitorpamplona.amethyst.service.uploads.nip95.Nip95CacheFactory
+import com.vitorpamplona.amethyst.ui.resourceCacheInit
 import com.vitorpamplona.amethyst.ui.screen.AccountSessionManager
 import com.vitorpamplona.amethyst.ui.screen.UiSettingsState
 import com.vitorpamplona.amethyst.ui.tor.TorManager
@@ -442,6 +444,12 @@ class AppModules(
             uiState
         }
 
+        // LRUCache should not be instanciated in the Main thread due to blocking
+        applicationIOScope.launch {
+            CachedRobohash
+            resourceCacheInit()
+        }
+
         // registers to receive events
         pokeyReceiver.register(appContext)
 
diff --git a/amethyst/src/main/java/com/vitorpamplona/amethyst/ui/StringResourceCache.kt b/amethyst/src/main/java/com/vitorpamplona/amethyst/ui/StringResourceCache.kt
index 3e801e894..66330ef81 100644
--- a/amethyst/src/main/java/com/vitorpamplona/amethyst/ui/StringResourceCache.kt
+++ b/amethyst/src/main/java/com/vitorpamplona/amethyst/ui/StringResourceCache.kt
@@ -39,6 +39,12 @@ private var resourceCacheLanguage: String? = null
 // Caches most common icons in the app to avoid using disk
 private val iconCache = LruCache<Int, LruCache<Int, Painter>>(30)
 
+fun resourceCacheInit() {
+    resourceCache
+    resourceCacheLanguage
+    iconCache
+}
+
 fun checkLanguage(currentLanguage: String) {
     if (resourceCacheLanguage == null) {
         resourceCacheLanguage = currentLanguage